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Articles 1 - 30 of 166
Full-Text Articles in Physical Sciences and Mathematics
Validation Of Recent Shear Wave Velocity Models In The United States With Full-Wave Simulation, Haiying Gao, Yang Shen
Validation Of Recent Shear Wave Velocity Models In The United States With Full-Wave Simulation, Haiying Gao, Yang Shen
Haiying Gao
Interpretations of dynamic processes and the thermal and chemical structure of the Earth depend on the accuracy of Earth models. With the growing number of velocity models constructed with different tomographic methods and seismic data sets, there is an increasing need for a systematic way to validate model accuracy and resolution. This study selects five shear wave velocity models in the U.S. and simulates full wave propagation within the 3-D structures. Surface-wave signals extracted from ambient seismic noise and regional earthquakes are compared with synthetic waveforms at multiple-frequency bands. Phase delays and cross-correlation coefficients between observed and synthetic waveforms allow …
Locating Cryptotephra In Sediments Using Fluid Imaging Technology, Robert D'Anjou, Nicholas L. Balascio, Raymond S. Bradley
Locating Cryptotephra In Sediments Using Fluid Imaging Technology, Robert D'Anjou, Nicholas L. Balascio, Raymond S. Bradley
Raymond S Bradley
We report a new approach to locate and quantify cryptotephra in sedimentary archives using a continuously-imaging Flow Cytometer and Microscope (FlowCAM_). The FlowCAM rapidly photographs particles flowing in suspension past a microscope lens and performs semi-automated analysis of particle images. It has had primarily biological applications, although the potential sedimentological applications are numerous. Here we test the ability of this instrument to image irregularly shaped, vesicular glass shards and to screen sediment samples for the presence of cryptotephra. First, reference samples of basalt and rhyolite tephra (sieved <63>microns) were analyzed with the FlowCAM, demonstrating the ability of the instrument to …
Biogeochemical Evidence For Hydrologic Change During The Holocene In A Lake Sediment Record From Southeast Greenland, Nicholas L. Balascio, William J. D'Andrea, Raymond S. Bradley, Bianca B. Perren
Biogeochemical Evidence For Hydrologic Change During The Holocene In A Lake Sediment Record From Southeast Greenland, Nicholas L. Balascio, William J. D'Andrea, Raymond S. Bradley, Bianca B. Perren
Raymond S Bradley
Holocene paleoclimate records from Greenland help us understand the response of the Greenland Ice Sheet and regional oceanic and atmospheric circulation systems to natural climate variability in order to place recent changes in a longer-term perspective. Here biogeochemical analysis of a lake sediment core from southeast Greenland is used to define changes in moisture balance and runoff during the Holocene in a catchment near the margin of the Greenland Ice Sheet. A 1.6 m sediment core that spans the last 8.8 ka was recovered from Flower Valley Lake on Ammassalik Island. Magnetic susceptibility, diatoms, bulk biogeochemical properties (TOC, C/N, δ13Corg), …
Assessment Of Regional Climate Model Simulation Estimates Over The Northeast United States, M. A. Rawlins, Raymond S. Bradley, H. F. Diaz
Assessment Of Regional Climate Model Simulation Estimates Over The Northeast United States, M. A. Rawlins, Raymond S. Bradley, H. F. Diaz
Raymond S Bradley
Given the coarse scales of coupled atmosphere-ocean global climate models, regional climate models (RCMs) are increasingly relied upon for studies at scales appropriate for many impacts studies. We use outputs from an ensemble of RCMs participating in the North American Regional Climate Change Assessment Program (NARCCAP) to investigate potential changes in seasonal air temperature and precipitation between present (1971–2000) and future (2041–2070) time periods across the northeast United States. The models show a consistent modest cold bias each season and are wetter than observations in winter, spring, and summer. Agreement in spatial variability and pattern correlation is good for air …
Proxy-To-Proxy Calibration: Increasing The Temporal Resolution Of Quantitative Climate Reconstructions, Lucien Von Gunten, William J. D'Andrea, Raymond S. Bradley, Yongsong Huang
Proxy-To-Proxy Calibration: Increasing The Temporal Resolution Of Quantitative Climate Reconstructions, Lucien Von Gunten, William J. D'Andrea, Raymond S. Bradley, Yongsong Huang
Raymond S Bradley
No abstract provided.
Scaling Relationships Of Source Parameters For Slow Slip Events, Haiying Gao, David A. Schmidt, Ray J. Weldon Ii
Scaling Relationships Of Source Parameters For Slow Slip Events, Haiying Gao, David A. Schmidt, Ray J. Weldon Ii
Haiying Gao
To better understand the physical mechanisms of slow slip events (SSEs) detected worldwide, we explore the scaling relationships of various source parameters and compare them with similar scaling laws for earthquakes. These scaling relationships highlight differences and similarities between slow slip events and earthquakes and hold implications for the degree of heterogeneity and fault-healing characteristics. That static drop remains constant for different-sized events as is observed for earthquakes. However, the static stress drop of slow slop events is within a range of 0.01-1.0 MPa, 1-2 orders of magnitiude lower than that found for earthquakes, which could be related to the …
Evaluating Holocene Climate Change In Northern Norway Using Sediment Records From Two Contrasting Lake Systems., Nicholas L. Balascio, Raymond S. Bradley
Evaluating Holocene Climate Change In Northern Norway Using Sediment Records From Two Contrasting Lake Systems., Nicholas L. Balascio, Raymond S. Bradley
Raymond S Bradley
We analyzed Holocene sedimentary records from two lakes in the Lofoten Islands, northern Norway to evaluate environmental changes during the Holocene related to northern North Atlantic climate dynamics. The lakes are located in different geomorphological settings, and thus provide a contrast in their response to regional climate change. Environmental changes at both lakes were interpreted based on magnetic susceptibility, organic-matter flux, C/N, d13 Corg , Ti concentrations, and mass accumulation rates. Chronologies were established using 16 AMS radiocarbon dates, and average deposition rates in both environments are higher than 0.2 mm/year throughout the Holocene. At Vikjordvatnet, sedimentary geochemical properties define …
Parcelling Out The Watershed: The Recurring Consequences Of Organising Columbia River Management Within A Basin-Based Territory, Eve Vogel
Eve Vogel
This article examines a 75-year history of North America’s Columbia river to answer the question: what difference does a river basin territory actually make? Advocates reason that river basins and watersheds are natural and holistic water management spaces, and can avoid the fragmentations and conflicts endemic to water management within traditional political territories. However, on the Columbia, this reasoning has not played out in practice. Instead, basin management has been shaped by challenges from and negotiations with more traditional jurisdictional spaces and political districts. The recurring result has been 'parcelling out the watershed': coordinating river management to produce a few …
Biogeochemical Evidence For Prehistoric Human Impacts On The Environment In Northwestern Norway, Raymond S. Bradley, Robert D'Anjou, Nicholas L. Balascio, David B. Finkelstein
Biogeochemical Evidence For Prehistoric Human Impacts On The Environment In Northwestern Norway, Raymond S. Bradley, Robert D'Anjou, Nicholas L. Balascio, David B. Finkelstein
Raymond S Bradley
Disentangling the effects of climate change and anthropogenic activities on the environment is a major challenge in paleoenvironmental research. Here, we used fecal sterols and other biogeochemical compounds in lake sediments from northern Norway to identify both natural and anthropogenic signals of environmental change during the late Holocene. The area was first occupied by humans and their grazing animals at ∼2,250 ± 75 calendar years before 1950 AD (calendar years before present). The arrival of humans is indicated by an abrupt increase in coprostanol (and its epimer epicoprostanol) in the sediments and an associated increase in 5β-stigmastanol (and 5β-epistigmastanol), which …
New Deal Versus Yankee Independence: The Failure Of Comprehensive Development On The Connecticut River, And Its Long-Term Consequences, Eve Vogel, Alexandra Lacey
New Deal Versus Yankee Independence: The Failure Of Comprehensive Development On The Connecticut River, And Its Long-Term Consequences, Eve Vogel, Alexandra Lacey
Eve Vogel
In the 1930s, comprehensive development of the Connecticut River basin – coordinated dam-building and operations from tributaries to tidewater – was advanced by multiple people and agencies. However, they fought for twenty years over the specifics. President Franklin Roosevelt and his New Deal supporters and heirs envisioned a federal valley authority that could provide regional economic development, resource conservation, pollution abatement, and, most important, cheap, widely available public electric power. The New England business establishment touted Yankee independence, but most of all, wanted hydropower allotted to states and private power companies. Upriver rural and farming advocates, led by Vermont’s George …
A Mild Little Ice Age And Unprecedented Warmth In An 1800 Year Record From Svalbard, William J. D'Andrea, Raymond S. Bradley, David Vaillencourt, Nicholas L. Balascio, Al Werner, Steve Roof, Michael J. Retelle
A Mild Little Ice Age And Unprecedented Warmth In An 1800 Year Record From Svalbard, William J. D'Andrea, Raymond S. Bradley, David Vaillencourt, Nicholas L. Balascio, Al Werner, Steve Roof, Michael J. Retelle
Raymond S Bradley
The Arctic region is subject to a great amplitude of climate variability and is currently undergoing large-scale changes due in part to anthropogenic global warming. Accurate projections of future change depend on anticipating the response of the Arctic climate system to forcing, and understanding how the response to human forcing will interact with natural climate variations. The Svalbard Archipelago occupies an important location for studying patterns and causes of Arctic climate variability; however, available paleoclimate records from Svalbard are of restricted use due to limitations of existing climate proxies. Here we present a sub-decadal- to multidecadal-scale record of summer temperature …
Natural Archives, Changing Climates, Raymond S. Bradley
Natural Archives, Changing Climates, Raymond S. Bradley
Raymond S Bradley
Climatic changes have occurred throughout human history, but instrumental measurements do not provide us with a very long perspective on climate variations. In many regions, instrumental records only extend back a century or two. To understand the longer-term variability of the climate system, we rely on natural archives— sediments, ice caps, peat bogs, cave deposits, banded corals and tree rings—in which a record of past changes in climate has been preserved. They are a treasure trove of the climatic and environmental history of the planet and provide information about factors that may have caused the climate to change, such as …
Distal Tephra Found In A Viking Boathouse: The Potential For Tephrochronology In Reconstructing The Iron Age In Norway, Nicholas L. Balascio, Stephen Wickler, L E. Narmo, Raymond S. Bradley
Distal Tephra Found In A Viking Boathouse: The Potential For Tephrochronology In Reconstructing The Iron Age In Norway, Nicholas L. Balascio, Stephen Wickler, L E. Narmo, Raymond S. Bradley
Raymond S Bradley
Distal tephra deposits from Icelandic volcanic eruptions have been found in Norway and can be used to precisely date a variety of sedimentary environments. Tephrochronology has not yet been applied to archaeological investigations in Norway because tephra are generally not found as visible layers, but are present as very low concentrations of glass shards (i.e. cryptotephra). In this study, we present results from the analysis of cryptotephras found in an Iron Age boathouse in northern Norway. The boathouse was associated with the chieftain center at Borg on Vestvågøy in the Lofoten Islands. In 2003, a trench was excavated and the …
A Multi-Proxy Approach To Assessing Isolation Basin Stratigraphy From The Lofoten Islands, Norway, Nicholas L. Balascio, Zhaohui Zhang, Raymond S. Bradley, Bianca B. Perren, Svein-Olaf Dahl, Jostein Bakke
A Multi-Proxy Approach To Assessing Isolation Basin Stratigraphy From The Lofoten Islands, Norway, Nicholas L. Balascio, Zhaohui Zhang, Raymond S. Bradley, Bianca B. Perren, Svein-Olaf Dahl, Jostein Bakke
Raymond S Bradley
This study takes a comprehensive approach to characterizing the isolation sequence of Heimerdalsvatnet, a coastal lake in the Lofoten Islands, northern Norway. We use established methods and explore new techniques to assess changes in marine influence. Bathymetric and sub-bottom profiles were acquired to examine basin-wide sedimentation and a 5.8 m sediment core spanning the last 7800 cal yr BP was analyzed. We measured magnetic susceptibility, bulk organic matter properties, molecular biomarkers, diatom assemblages, and elemental profiles acquired by scanning X-ray fluorescence. These characteristics of the sediment reflect detailed changes in salinity and water column conditions as the lake was progressively …
Symbiogenesis. A New Principle Of Evolution Rediscovery Of Boris Mikhaylovich Kozo-Polyansky (1890–1957), Lynn Margulis
Symbiogenesis. A New Principle Of Evolution Rediscovery Of Boris Mikhaylovich Kozo-Polyansky (1890–1957), Lynn Margulis
Lynn Margulis (1938 - 2011)
The following is a heavily edited transcript of my illustrated lecture, that included our 14 minute video (with a 2 minute animation model) that shows each step in live organisms hypothesized in the origin of nucleated cells from bacteria (“eukaryosis”). New observations presented with modern examples of live phenomena make us virtually certain that B.M. Kozo-Polyansky’s “new principle” (1924) of the importance of symbiogenesis in the evolutionary process of at least 2000 million years of life on Earth is correct. The widely touted but undocumented explanation of the origin of evolutionary novelty by “gradual accumulation of random mutations” will be …
Millenial-Aged Organic Carbon Subsidies To A Modern River Food Web, Steven T. Petsch, J. J. Cole, P. Raymond, J. E. Bauer, N. Caraco
Millenial-Aged Organic Carbon Subsidies To A Modern River Food Web, Steven T. Petsch, J. J. Cole, P. Raymond, J. E. Bauer, N. Caraco
Steven T. Petsch
Recent studies indicate that highly aged material is a major component of organic matter transported by most rivers. However, few studies have used natural 14C to trace the potential entry of this aged material into modern river food webs. Here we use natural abundance 14C, 13C, and deuterium (2H) to trace the contribution of aged and contemporary organic matter to an important group of consumers, crustacean zooplankton, in a large temperate river (the Hudson River, New York, USA). Zooplankton were highly 14C depleted (mean delta14C = -240 per thousand) compared to modern primary production in the river or its watershed …
Source Parameters And Time‐Dependent Slip Distributions Of Slow Slip Events On The Cascadia Subduction Zone From 1998 To 2008, D. A. Schmidt, Haiying Gao
Source Parameters And Time‐Dependent Slip Distributions Of Slow Slip Events On The Cascadia Subduction Zone From 1998 To 2008, D. A. Schmidt, Haiying Gao
Haiying Gao
We invert for the time‐dependent slip history of slow slip events on the Cascadia subduction zone using GPS data from 1998 to 2008. The 16 slip transients have sufficient station coverage to solve for the slip distribution on the plate interface. GPS time series are inverted for fault slip using the Extended Network Inversion Filter. Limited station coverage south of Portland (45.5°N latitude) restricts our analysis to events on the northern half of the subduction zone. Slip is resolved at the base of the seismogenic zone and the slip distributions suggest a potential segment boundary near Seattle (47.6°N) that correlates …
A Low Threshold For North Atlantic Ice Rafting From “Low-Slung Slippery” Late Pliocene Ice Sheets, Ian Bailey, Clara T. Bolton, Robert M. Deconto, David Pollard, Ralf Schiebel, Paul A. Wilson
A Low Threshold For North Atlantic Ice Rafting From “Low-Slung Slippery” Late Pliocene Ice Sheets, Ian Bailey, Clara T. Bolton, Robert M. Deconto, David Pollard, Ralf Schiebel, Paul A. Wilson
Robert M DeConto
Suborbital variability in late Pleistocene records of ice-rafted debris and sea surface temperature in the North Atlantic Ocean appears most extreme during times of enlarged ice sheets with a well-constrained benthic oxygen isotope-defined “ice volume threshold” (δ18OT) for the “100 ka (inter)glacial” world. Information on climate instability for the earlier Pleistocene and late Pliocene is more fragmentary and/or of much lower temporal resolution, but the data available suggest similar behavior with δ18OT remaining more or less constant over the past 3000 ka. This finding is puzzling because it implies that ice rafting is highly sensitive to ice volume on short …
An Analysis Of Past And Future Changes In The Ice Cover Of Two High-Arctic Lakes Based On Synthetic Aperture Radar (Sar) And Landsat Imagery, Timothy L. Cook, Raymond S. Bradley
An Analysis Of Past And Future Changes In The Ice Cover Of Two High-Arctic Lakes Based On Synthetic Aperture Radar (Sar) And Landsat Imagery, Timothy L. Cook, Raymond S. Bradley
Raymond S Bradley
Space-borne remotely sensed data can provide valuable insight into cryospheric processes in remote high-latitude regions for which direct observations are limited. In this study we use synthetic aperture radar (SAR) and Landsat imagery to evaluate recent changes in the ice cover of Upper and Lower Murray Lakes (81°20′N, 69°30′W) on Ellesmere Island, Nunavut, Canada. These data highlight changes in ice conditions that have occurred over the past decade and provide a means for assessing the likely impacts of rising temperatures on future lake-ice conditions. Under current (1997–2007) climatic conditions the Murray Lakes average several weeks of ice-free conditions in August …
Impact Of Hurricane Katrina (2005) On Shelf Organic Carbon Burial And Deltaic Evolution, Steven T. Petsch, Mead A. Allison, Timothy M. Dellapenna, Elizabeth S. Gordon, Siddhartha Mitra
Impact Of Hurricane Katrina (2005) On Shelf Organic Carbon Burial And Deltaic Evolution, Steven T. Petsch, Mead A. Allison, Timothy M. Dellapenna, Elizabeth S. Gordon, Siddhartha Mitra
Steven T. Petsch
Sediment cores from the continental shelf adjacent to the Mississippi River delta immediately after the passage of Hurricane Katrina were used to examine the magnitude, and implications for the carbon budget, of sediment and particulate organic carbon (POC) remobilized by the storm on the river-dominated continental shelf. POC was sourced from incision of the innermost continental shelf (<25 m water depth) and from surge ebb advection from adjacent wetlands and shallow estuaries, and was re-deposited in deeper water on the shelf. This pulse of young (<1,600 yBP) labile POC, mixed with relict (>5000 yBP) POC eroded from the seafloor, has major implications for the remineralization versus burial of POC in deltas. The scale of erosional deflation of the shelf in water depths beyond seasonal wave-current conditions suggests that, over millennia, tropical cyclones may be …
Subhorizontal Fabric In Exhumed Continental Lower Crust And Implications For Lower Crustal Flow: Athabasca Granulite Terrane, Western Canadian Shield, Gregory Dumond, Philippe Goncalves, Michael L. Williams, Michael J. Jercinovic
Subhorizontal Fabric In Exhumed Continental Lower Crust And Implications For Lower Crustal Flow: Athabasca Granulite Terrane, Western Canadian Shield, Gregory Dumond, Philippe Goncalves, Michael L. Williams, Michael J. Jercinovic
Michael J Jercinovic
The >20,000 km2 Athabasca granulite terrane is one of Earth's largest exposures of continental lower crust. The terrane is underlain by heterogeneous isobarically cooled orthogneisses termed the Mary batholith. A transect across the batholith documents early, penetrative subhorizontal to gently dipping gneissic foliation (S1). Kilometer- to meter-scale domains of S1 contain lineations (L1) defined by ribbons of recrystallized K-feldspar + plagioclase + quartz + amphibole ± orthopyroxene. L1 coincides with garnet aggregates, elongate mafic enclaves, and core-and-mantle structure in feldspar porphyroclasts. Lineations are coaxial with hinges of isoclinally folded layering (F1). L1 is interpreted as a composite mineral lineation with …
Multiattribute Optimization Of Restoration Options: Designing Incentives For Watershed Management, Timothy O. Randhir, Deborah M. Shriver
Multiattribute Optimization Of Restoration Options: Designing Incentives For Watershed Management, Timothy O. Randhir, Deborah M. Shriver
Timothy O. Randhir
Watershed restoration requires careful assessment of impairment in ecosystem attributes to design appropriate conservation policies. This study applies a multiattribute optimization framework for evaluating relative gains in restoration based on potential improvements in economic and environmental attributes related to water quality, habitat, and urbanization. Policy mechanisms through direct compensation of restoration activities are evaluated based on single-attribute and multiattribute optimization and watershed response to varying levels of restoration incentives. Results indicate that tradeoffs in economic and environmental objectives are critical to identifying optimal restoration strategies at a watershed scale. The multiattribute optimization method developed in this study balances levels of …
Recent Changes In Freezing Level Heights In The Tropics With Implications For The Deglacierization Of High Mountain Regions, Raymond S. Bradley, F. Keimig, H. F. Diaz, D. R. Hardy
Recent Changes In Freezing Level Heights In The Tropics With Implications For The Deglacierization Of High Mountain Regions, Raymond S. Bradley, F. Keimig, H. F. Diaz, D. R. Hardy
Raymond S Bradley
The height of the freezing level in the tropical atmosphere (the free air 0°C isotherm) has increased across most of the region, particularly in the outer Tropics. In the tropical Andes, south of the Equator, high elevation surface temperatures and upper air data show a similar trend in temperature, of ∼0.1°C/decade over the last 50 years. Meteorological observations at 5680 m on the summit of the Quelccaya Ice Cap, the largest ice mass in the Tropics, indicate that daily maximum temperatures often exceed 0°C from October–May, and rise well above freezing for much of the year around the ice cap …
Photoproduction Of Pi(+)Pi(-) Meson Pairs On The Proton, M Battaglieri, R De Vita, Ap Szczepaniak, Kp Adhikari, Mj Amaryan, M Anghinolfi, H Baghdasaryan, I Bedlinskiy, M Bellis, L Bibrzycki, As Biselli, C Bookwalter, D Branford, Wj Briscoe, Vd Burkert, Sl Careccia, Ds Carman, E Clinton, Pl Cole, P Collins, V Crede, D Dale, A D'Angelo, A Daniel, N Dashyan, E De Sanctis, A Deur, S Dhamija, C Djalali, Ge Dodge, D Doughty, V Drozdov, H Egiyan, P Eugenio, G Fedotov, S Fegan, A Fradi, My Gabrielyan, L Gan, M Garcon, A Gasparian, Gp Gilfoyle, Kl Giovanetti, Fx Girod, O Glamazdin, J Goett, Jt Goetz, W Gohn, E Golovatch, Rw Gothe, Ka Griffioen, M Guidal, L Guo, K Hafidi, H Hakobyan, C Hanretty, N Hassall, K Hicks, M Holtrop, Ce Hyde, Y Ilieva, Dg Ireland, El Isupov, Jr Johnstone, K Joo, D Keller, M Khandaker, P Khetarpal, W Kim, A Klein, Fj Klein, M Kossov, A Kubarovsky, V Kubarovsky, Sv Kuleshov, V Kuznetsov, Jm Laget, L Lesniak, K Livingston, Hy Lu, M Mayer, Me Mccracken, B Mckinnon, Ca Meyer, K Mikhailov, T Mineeva, M Mirazita, V Mochalov, V Mokeev, K Moriya, E Munevar, P Nadel-Turonski, I Nakagawa, Cs Nepali, S Niccolai, I Niculescu, Mr Niroula, M Osipenko, Ai Ostrovidov, K Park, S Park, M Paris, E Pasyuk, Sa Pereira, S Pisano, N Pivnyuk, O Pogorelko, S Pozdniakov, Jw Price, Y Prok, D Protopopescu, Ba Raue, G Ricco, M Ripani, Bg Ritchie, G Rosner, P Rossi, F Sabatie, Ms Saini, C Salgado, D Schott, Ra Schumacher, H Seraydaryan, Yg Sharabian, Di Sober, D Sokhan, A Stavinsky, S Stepanyan, Ss Stepanyan, P Stoler, Ii Strakovsky, S Strauch, M Taiuti, Dj Tedeschi, A Teymurazyan, S Tkachenko, M Ungaro, Mf Vineyard, Av Vlassov, Dp Watts, Lb Weinstein, Dp Weygand, M Williams, E Wolin, Mh Wood, L Zana, J Zhang, B Zhao, Zw Zhao
Photoproduction Of Pi(+)Pi(-) Meson Pairs On The Proton, M Battaglieri, R De Vita, Ap Szczepaniak, Kp Adhikari, Mj Amaryan, M Anghinolfi, H Baghdasaryan, I Bedlinskiy, M Bellis, L Bibrzycki, As Biselli, C Bookwalter, D Branford, Wj Briscoe, Vd Burkert, Sl Careccia, Ds Carman, E Clinton, Pl Cole, P Collins, V Crede, D Dale, A D'Angelo, A Daniel, N Dashyan, E De Sanctis, A Deur, S Dhamija, C Djalali, Ge Dodge, D Doughty, V Drozdov, H Egiyan, P Eugenio, G Fedotov, S Fegan, A Fradi, My Gabrielyan, L Gan, M Garcon, A Gasparian, Gp Gilfoyle, Kl Giovanetti, Fx Girod, O Glamazdin, J Goett, Jt Goetz, W Gohn, E Golovatch, Rw Gothe, Ka Griffioen, M Guidal, L Guo, K Hafidi, H Hakobyan, C Hanretty, N Hassall, K Hicks, M Holtrop, Ce Hyde, Y Ilieva, Dg Ireland, El Isupov, Jr Johnstone, K Joo, D Keller, M Khandaker, P Khetarpal, W Kim, A Klein, Fj Klein, M Kossov, A Kubarovsky, V Kubarovsky, Sv Kuleshov, V Kuznetsov, Jm Laget, L Lesniak, K Livingston, Hy Lu, M Mayer, Me Mccracken, B Mckinnon, Ca Meyer, K Mikhailov, T Mineeva, M Mirazita, V Mochalov, V Mokeev, K Moriya, E Munevar, P Nadel-Turonski, I Nakagawa, Cs Nepali, S Niccolai, I Niculescu, Mr Niroula, M Osipenko, Ai Ostrovidov, K Park, S Park, M Paris, E Pasyuk, Sa Pereira, S Pisano, N Pivnyuk, O Pogorelko, S Pozdniakov, Jw Price, Y Prok, D Protopopescu, Ba Raue, G Ricco, M Ripani, Bg Ritchie, G Rosner, P Rossi, F Sabatie, Ms Saini, C Salgado, D Schott, Ra Schumacher, H Seraydaryan, Yg Sharabian, Di Sober, D Sokhan, A Stavinsky, S Stepanyan, Ss Stepanyan, P Stoler, Ii Strakovsky, S Strauch, M Taiuti, Dj Tedeschi, A Teymurazyan, S Tkachenko, M Ungaro, Mf Vineyard, Av Vlassov, Dp Watts, Lb Weinstein, Dp Weygand, M Williams, E Wolin, Mh Wood, L Zana, J Zhang, B Zhao, Zw Zhao
Michael Williams
The cross section for photoproduction of pion pairs from hydrogen has been calculated from the cut-off static theory, assuming the energy is sufficiently low that one of the mesons is produced in an S state, the other in a P state. It is shown that the cross section for this process can be expressed exactly in terms of the P-wave scattering phase shifts, provided the S-wave meson-nucleon interactions and the meson-meson interaction can be neglected. The theoretical predictions obtained here are in general agreement with preliminary experimental results.
Precise Measurement Of The Neutron Magnetic Form Factor G(M)(N) In The Few-Gev2 Region, J Lachniet, A Afanasev, H Arenhovel, Wk Brooks, Gp Gilfoyle, D Higinbotham, S Jeschonnek, B Quinn, Mf Vineyard, G Adams, Kp Adhikari, Mj Amaryan, M Anghinolfi, B Asavapibhop, G Asryan, H Avakian, H Bagdasaryan, N Baillie, Jp Ball, Na Baltzell, S Barrow, V Batourine, M Battaglieri, K Beard, I Bedlinskiy, M Bektasoglu, M Bellis, N Benmouna, Bl Berman, As Biselli, Be Bonner, C Bookwalter, S Bouchigny, S Boiarinov, R Bradford, D Branford, Wj Briscoe, S Bultmann, Vd Burkert, Jr Calarco, Sl Careccia, Ds Carman, L Casey, L Cheng, Pl Cole, A Coleman, P Collins, D Cords, P Corvisiero, D Crabb, V Crede, Jp Cummings, D Dale, A Daniel, N Dashyan, R De Masi, R De Vita, E De Sanctis, Pv Degtyarenko, H Denizli, L Dennis, A Deur, S Dhamija, Kv Dharmawardane, Ks Dhuga, R Dickson, C Djalali, Ge Dodge, D Doughty, P Dragovitsch, M Dugger, S Dytman, Op Dzyubak, H Egiyan, Ks Egiyan, L El Fassi, L Elouadrhiri, A Empl, P Eugenio, R Fatemi, G Fedotov, R Fersch, Rj Feuerbach, Ta Forest, A Fradi, My Gabrielyan, M Garcon, G Gavalian, N Gevorgyan, Kl Giovanetti, Fx Girod, Jt Goetz, W Gohn, E Golovatch, Rw Gothe, L Graham, Ka Griffioen, M Guidal, M Guillo, N Guler, L Guo, V Gyurjyan, C Hadjidakis, K Hafidi, H Hakobyan, C Hanretty, J Hardie, N Hassall, D Heddle, Fw Hersman, K Hicks, I Hleiqawi, M Holtrop, J Hu, M Huertas, Ce Hyde-Wright, Y Ilieva, Dg Ireland, Bs Ishkhanov, El Isupov, Mm Ito, D Jenkins, Hs Jo, Jr Johnstone, K Joo, Hg Juengst, T Kageya, N Kalantarians, D Keller, Jd Kellie, M Khandaker, P Khetarpal, Ky Kim, K Kim, W Kim, A Klein, Fj Klein, M Klusman, P Konczykowski, M Kossov, Lh Kramer, V Kubarovsky, J Kuhn, Se Kuhn, Sv Kuleshov, V Kuznetsov, Jm Laget, J Langheinrich, D Lawrence, Acs Lima, K Livingston, M Lowry, Hy Lu, K Lukashin, M Maccormick, S Malace, Jj Manak, N Markov, P Mattione, S Mcaleer, Me Mccracken, B Mckinnon, Jwc Mcnabb, Ba Mecking, Md Mestayer, Ca Meyer, T Mibe, K Mikhailov, T Mineeva, R Minehart, M Mirazita, R Miskimen, V Mokeev, B Moreno, K Moriya, Sa Morrow, M Moteabbed, J Mueller, E Munevar, Gs Mutchler, P Nadel-Turonski, R Nasseripour, S Niccolai, G Niculescu, I Niculescu, Bb Niczyporuk, Mr Niroula, Ra Niyazov, M Nozar, Gv O'Rielly, M Osipenko, Ai Ostrovidov, K Park, S Park, E Pasyuk, C Paterson, Sa Pereira, Sa Philips, J Pierce, N Pivnyuk, D Pocanic, O Pogorelko, E Polli, I Popa, S Pozdniakov, Bm Preedom, Jw Price, Y Prok, D Protopopescu, Lm Qin, Ba Raue, G Riccardi, G Ricco, M Ripani, Bg Ritchie, G Rosner, P Rossi, D Rowntree, Pd Rubin, F Sabatie, Ms Saini, J Salamanca, C Salgado, A Sandorfi, Jp Santoro, V Sapunenko, D Schott, Ra Schumacher, Vs Serov, Yg Sharabian, D Sharov, J Shaw, Nv Shvedunov, Av Skabelin, Es Smith, Lc Smith, Di Sober, D Sokhan, A Starostin, A Stavinsky, S Stepanyan, Ss Stepanyan, Be Stokes, P Stoler, Ka Stopani, Ii Strakovsky, S Strauch, R Suleiman, M Taiuti, S Taylor, Dj Tedeschi, R Thompson, A Tkabladze, S Tkachenko, M Ungaro, Av Vlassov, Dp Watts, X Wei, Lb Weinstein, Dp Weygand, M Williams, E Wolin, Mh Wood, A Yegneswaran, J Yun, M Yurov, L Zana, J Zhang, B Zhao, Zw Zhao
Precise Measurement Of The Neutron Magnetic Form Factor G(M)(N) In The Few-Gev2 Region, J Lachniet, A Afanasev, H Arenhovel, Wk Brooks, Gp Gilfoyle, D Higinbotham, S Jeschonnek, B Quinn, Mf Vineyard, G Adams, Kp Adhikari, Mj Amaryan, M Anghinolfi, B Asavapibhop, G Asryan, H Avakian, H Bagdasaryan, N Baillie, Jp Ball, Na Baltzell, S Barrow, V Batourine, M Battaglieri, K Beard, I Bedlinskiy, M Bektasoglu, M Bellis, N Benmouna, Bl Berman, As Biselli, Be Bonner, C Bookwalter, S Bouchigny, S Boiarinov, R Bradford, D Branford, Wj Briscoe, S Bultmann, Vd Burkert, Jr Calarco, Sl Careccia, Ds Carman, L Casey, L Cheng, Pl Cole, A Coleman, P Collins, D Cords, P Corvisiero, D Crabb, V Crede, Jp Cummings, D Dale, A Daniel, N Dashyan, R De Masi, R De Vita, E De Sanctis, Pv Degtyarenko, H Denizli, L Dennis, A Deur, S Dhamija, Kv Dharmawardane, Ks Dhuga, R Dickson, C Djalali, Ge Dodge, D Doughty, P Dragovitsch, M Dugger, S Dytman, Op Dzyubak, H Egiyan, Ks Egiyan, L El Fassi, L Elouadrhiri, A Empl, P Eugenio, R Fatemi, G Fedotov, R Fersch, Rj Feuerbach, Ta Forest, A Fradi, My Gabrielyan, M Garcon, G Gavalian, N Gevorgyan, Kl Giovanetti, Fx Girod, Jt Goetz, W Gohn, E Golovatch, Rw Gothe, L Graham, Ka Griffioen, M Guidal, M Guillo, N Guler, L Guo, V Gyurjyan, C Hadjidakis, K Hafidi, H Hakobyan, C Hanretty, J Hardie, N Hassall, D Heddle, Fw Hersman, K Hicks, I Hleiqawi, M Holtrop, J Hu, M Huertas, Ce Hyde-Wright, Y Ilieva, Dg Ireland, Bs Ishkhanov, El Isupov, Mm Ito, D Jenkins, Hs Jo, Jr Johnstone, K Joo, Hg Juengst, T Kageya, N Kalantarians, D Keller, Jd Kellie, M Khandaker, P Khetarpal, Ky Kim, K Kim, W Kim, A Klein, Fj Klein, M Klusman, P Konczykowski, M Kossov, Lh Kramer, V Kubarovsky, J Kuhn, Se Kuhn, Sv Kuleshov, V Kuznetsov, Jm Laget, J Langheinrich, D Lawrence, Acs Lima, K Livingston, M Lowry, Hy Lu, K Lukashin, M Maccormick, S Malace, Jj Manak, N Markov, P Mattione, S Mcaleer, Me Mccracken, B Mckinnon, Jwc Mcnabb, Ba Mecking, Md Mestayer, Ca Meyer, T Mibe, K Mikhailov, T Mineeva, R Minehart, M Mirazita, R Miskimen, V Mokeev, B Moreno, K Moriya, Sa Morrow, M Moteabbed, J Mueller, E Munevar, Gs Mutchler, P Nadel-Turonski, R Nasseripour, S Niccolai, G Niculescu, I Niculescu, Bb Niczyporuk, Mr Niroula, Ra Niyazov, M Nozar, Gv O'Rielly, M Osipenko, Ai Ostrovidov, K Park, S Park, E Pasyuk, C Paterson, Sa Pereira, Sa Philips, J Pierce, N Pivnyuk, D Pocanic, O Pogorelko, E Polli, I Popa, S Pozdniakov, Bm Preedom, Jw Price, Y Prok, D Protopopescu, Lm Qin, Ba Raue, G Riccardi, G Ricco, M Ripani, Bg Ritchie, G Rosner, P Rossi, D Rowntree, Pd Rubin, F Sabatie, Ms Saini, J Salamanca, C Salgado, A Sandorfi, Jp Santoro, V Sapunenko, D Schott, Ra Schumacher, Vs Serov, Yg Sharabian, D Sharov, J Shaw, Nv Shvedunov, Av Skabelin, Es Smith, Lc Smith, Di Sober, D Sokhan, A Starostin, A Stavinsky, S Stepanyan, Ss Stepanyan, Be Stokes, P Stoler, Ka Stopani, Ii Strakovsky, S Strauch, R Suleiman, M Taiuti, S Taylor, Dj Tedeschi, R Thompson, A Tkabladze, S Tkachenko, M Ungaro, Av Vlassov, Dp Watts, X Wei, Lb Weinstein, Dp Weygand, M Williams, E Wolin, Mh Wood, A Yegneswaran, J Yun, M Yurov, L Zana, J Zhang, B Zhao, Zw Zhao
Michael Williams
The neutron elastic magnetic form factor GMn has been extracted from quasielastic electron scattering data on deuterium with the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. The kinematic coverage of the measurement is continuous from Q2=1 GeV2 to 4.8 GeV2. High precision was achieved by employing a ratio technique in which many uncertainties cancel, and by a simultaneous in-situ calibration of the neutron detection efficiency, the largest correction to the data. Neutrons were detected using the CLAS electromagnetic calorimeters and the time-of-flight scintillators. Data were taken at two different electron beam energies, allowing up to four semi-independent measurements of …
Beam Spin Asymmetries In Deeply Virtual Compton Scattering (Dvcs) With Clas At 4.8 Gev, G Gavalian, Vd Burkert, L Elouadrhiri, M Holtrop, S Stepanyan, D Abrahamyan, G Adams, Mj Amaryan, P Ambrozewicz, M Anghinolfi, B Asavapibhop, G Asryan, H Avakian, H Bagdasaryan, N Baillie, Jp Ball, Na Baltzell, S Barrow, V Batourine, M Battaglieri, K Beard, I Bedlinskiy, M Bektasoglu, M Bellis, N Benmouna, Bl Berman, As Biselli, Be Bonner, S Bouchigny, S Boiarinov, R Bradford, D Branford, Wj Briscoe, Wk Brooks, S Bultmann, C Butuceanu, Jr Calarco, Sl Careccia, Ds Carman, B Carnahan, S Chen, Pl Cole, A Coleman, P Collins, P Coltharp, D Cords, P Corvisiero, D Crabb, H Crannell, V Crede, Jp Cummings, N Dashyan, R De Masi, R De Vita, E De Sanctis, Pv Degtyarenko, H Denizli, L Dennis, A Deur, Kv Dharmawardane, Ks Dhuga, R Dickson, C Djalali, Ge Dodge, J Donnelly, D Doughty, P Dragovitsch, M Dugger, S Dytman, Op Dzyubak, H Egiyan, Ks Egiyan, L El Fassi, A Empl, P Eugenio, R Fatemi, G Fedotov, G Feldman, Rj Feuerbach, Ta Forest, H Funsten, M Garcon, Gp Gilfoyle, Kl Giovanetti, Fx Girod, Jt Goetz, E Golovatch, A Gonenc, Rw Gothe, Ka Griffioen, M Guidal, M Guillo, N Guler, L Guo, V Gyurjyan, C Hadjidakis, K Hafidi, H Hakobyan, Rs Hakobyan, J Hardie, N Hassall, D Heddle, Fw Hersman, K Hicks, I Hleiqawi, J Hu, M Huertas, Ce Hyde, Y Ilieva, Dg Ireland, Bs Ishkhanov, El Isupov, Mm Ito, D Jenkins, Hs Jo, K Joo, Hg Juengst, N Kalantarians, Jd Kellie, M Khandaker, Ky Kim, K Kim, W Kim, A Klein, Fj Klein, M Klusman, M Kossov, Lh Kramer, V Kubarovsky, J Kuhn, Se Kuhn, Sv Kuleshov, M Kuznetsov, J Lachniet, Jm Laget, J Langheinrich, D Lawrence, Acs Lima, K Livingston, Hy Lu, K Lukashin, M Maccormick, Jj Manak, N Markov, S Mcaleer, B Mckinnon, Jwc Mcnabb, Ba Mecking, Md Mestayer, Ca Meyer, T Mibe, K Mikhailov, R Minehart, M Mirazita, R Miskimen, V Mokeev, K Moriya, Sa Morrow, M Moteabbed, J Mueller, Gs Mutchler, P Nadel-Turonski, J Napolitano, R Nasseripour, S Niccolai, G Niculescu, I Niculescu, Bb Niczyporuk, Mr Niroula, Ra Niyazov, M Nozar, Gv O'Rielly, M Osipenko, Ai Ostrovidov, K Park, E Pasyuk, C Paterson, Sa Philips, J Pierce, N Pivnyuk, D Pocanic, O Pogorelko, E Polli, I Popa, S Pozdniakov, Bm Preedom, Jw Price, Y Prok, D Protopopescu, Lm Qin, Ba Raue, G Riccardi, G Ricco, M Ripani, Bg Ritchie, F Ronchetti, G Rosner, P Rossi, D Rowntree, Pd Rubin, F Sabatie, J Salamanca, C Salgado, Jp Santoro, V Sapunenko, Ra Schumacher, Vs Serov, Yg Sharabian, J Shaw, Nv Shvedunov, Av Skabelin, Es Smith, Lc Smith, Di Sober, D Sokhan, A Stavinsky, Ss Stepanyan, Be Stokes, P Stoler, Ii Strakovsky, S Strauch, R Suleiman, M Taiuti, S Taylor, Dj Tedeschi, U Thoma, R Thompson, A Tkabladze, S Tkachenko, C Tur, M Ungaro, Mf Vineyard, Av Vlassov, Dp Watts, Lb Weinstein, Dp Weygand, M Williams, E Wolin, Mh Wood, A Yegneswaran, J Yun, M Yurov, L Zana, J Zhang, B Zhao, Zw Zhao
Beam Spin Asymmetries In Deeply Virtual Compton Scattering (Dvcs) With Clas At 4.8 Gev, G Gavalian, Vd Burkert, L Elouadrhiri, M Holtrop, S Stepanyan, D Abrahamyan, G Adams, Mj Amaryan, P Ambrozewicz, M Anghinolfi, B Asavapibhop, G Asryan, H Avakian, H Bagdasaryan, N Baillie, Jp Ball, Na Baltzell, S Barrow, V Batourine, M Battaglieri, K Beard, I Bedlinskiy, M Bektasoglu, M Bellis, N Benmouna, Bl Berman, As Biselli, Be Bonner, S Bouchigny, S Boiarinov, R Bradford, D Branford, Wj Briscoe, Wk Brooks, S Bultmann, C Butuceanu, Jr Calarco, Sl Careccia, Ds Carman, B Carnahan, S Chen, Pl Cole, A Coleman, P Collins, P Coltharp, D Cords, P Corvisiero, D Crabb, H Crannell, V Crede, Jp Cummings, N Dashyan, R De Masi, R De Vita, E De Sanctis, Pv Degtyarenko, H Denizli, L Dennis, A Deur, Kv Dharmawardane, Ks Dhuga, R Dickson, C Djalali, Ge Dodge, J Donnelly, D Doughty, P Dragovitsch, M Dugger, S Dytman, Op Dzyubak, H Egiyan, Ks Egiyan, L El Fassi, A Empl, P Eugenio, R Fatemi, G Fedotov, G Feldman, Rj Feuerbach, Ta Forest, H Funsten, M Garcon, Gp Gilfoyle, Kl Giovanetti, Fx Girod, Jt Goetz, E Golovatch, A Gonenc, Rw Gothe, Ka Griffioen, M Guidal, M Guillo, N Guler, L Guo, V Gyurjyan, C Hadjidakis, K Hafidi, H Hakobyan, Rs Hakobyan, J Hardie, N Hassall, D Heddle, Fw Hersman, K Hicks, I Hleiqawi, J Hu, M Huertas, Ce Hyde, Y Ilieva, Dg Ireland, Bs Ishkhanov, El Isupov, Mm Ito, D Jenkins, Hs Jo, K Joo, Hg Juengst, N Kalantarians, Jd Kellie, M Khandaker, Ky Kim, K Kim, W Kim, A Klein, Fj Klein, M Klusman, M Kossov, Lh Kramer, V Kubarovsky, J Kuhn, Se Kuhn, Sv Kuleshov, M Kuznetsov, J Lachniet, Jm Laget, J Langheinrich, D Lawrence, Acs Lima, K Livingston, Hy Lu, K Lukashin, M Maccormick, Jj Manak, N Markov, S Mcaleer, B Mckinnon, Jwc Mcnabb, Ba Mecking, Md Mestayer, Ca Meyer, T Mibe, K Mikhailov, R Minehart, M Mirazita, R Miskimen, V Mokeev, K Moriya, Sa Morrow, M Moteabbed, J Mueller, Gs Mutchler, P Nadel-Turonski, J Napolitano, R Nasseripour, S Niccolai, G Niculescu, I Niculescu, Bb Niczyporuk, Mr Niroula, Ra Niyazov, M Nozar, Gv O'Rielly, M Osipenko, Ai Ostrovidov, K Park, E Pasyuk, C Paterson, Sa Philips, J Pierce, N Pivnyuk, D Pocanic, O Pogorelko, E Polli, I Popa, S Pozdniakov, Bm Preedom, Jw Price, Y Prok, D Protopopescu, Lm Qin, Ba Raue, G Riccardi, G Ricco, M Ripani, Bg Ritchie, F Ronchetti, G Rosner, P Rossi, D Rowntree, Pd Rubin, F Sabatie, J Salamanca, C Salgado, Jp Santoro, V Sapunenko, Ra Schumacher, Vs Serov, Yg Sharabian, J Shaw, Nv Shvedunov, Av Skabelin, Es Smith, Lc Smith, Di Sober, D Sokhan, A Stavinsky, Ss Stepanyan, Be Stokes, P Stoler, Ii Strakovsky, S Strauch, R Suleiman, M Taiuti, S Taylor, Dj Tedeschi, U Thoma, R Thompson, A Tkabladze, S Tkachenko, C Tur, M Ungaro, Mf Vineyard, Av Vlassov, Dp Watts, Lb Weinstein, Dp Weygand, M Williams, E Wolin, Mh Wood, A Yegneswaran, J Yun, M Yurov, L Zana, J Zhang, B Zhao, Zw Zhao
Michael Williams
We report measurements of the beam spin asymmetry in deeply virtual Compton scattering (DVCS) at an electron beam energy of 4.8 GeV using the CLAS detector at the Thomas Jefferson National Accelerator Facility. The DVCS beam spin asymmetry has been measured in a wide range of kinematics, 1.0
Measurement Of Semi-Inclusive Pi(+) Electroproduction Off The Proton, M Osipenko, M Ripani, G Ricco, H Avakian, R De Vita, G Adams, Mj Amaryan, P Ambrozewicz, M Anghinolfi, G Asryan, H Bagdasaryan, N Baillie, Jp Ball, Na Baltzell, S Barrow, M Battaglieri, I Bedlinskiy, M Bektasoglu, M Bellis, N Benmouna, Bl Berman, As Biselli, L Blaszczyk, Be Bonner, S Bouchigny, S Boiarinov, R Bradford, D Branford, Wj Briscoe, Wk Brooks, S Bultmann, Vd Burkert, C Butuceanu, Jr Calarco, Sl Careccia, Ds Carman, A Cazes, F Ceccopieri, S Chen, Pl Cole, P Collins, P Coltharp, P Corvisiero, D Crabb, V Crede, Jp Cummings, N Dashyan, R De Masi, E De Sanctis, Pv Degtyarenko, H Denizli, L Dennis, A Deur, Kv Dharmawardane, Ks Dhuga, R Dickson, C Djalali, Ge Dodge, J Donnelly, D Doughty, V Drozdov, M Dugger, S Dytman, Op Dzyubak, H Egiyan, Ks Egiyan, L El Fassi, L Elouadrhiri, P Eugenio, R Fatemi, G Fedotov, G Feldman, Rj Feuerbach, H Funsten, M Garcon, G Gavalian, Gp Gilfoyle, Kl Giovanetti, Fx Girod, Jt Goetz, E Golovach, A Gonenc, Cio Gordon, Rw Gothe, Ka Griffioen, M Guidal, M Guillo, N Guler, L Guo, V Gyurjyan, C Hadjidakis, K Hafidi, H Hakobyan, Rs Hakobyan, C Hanretty, J Hardie, N Hassall, D Heddle, Fw Hersman, K Hicks, I Hleiqawi, M Holtrop, Ce Hyde-Wright, Y Ilieva, A Ilyichev, Dg Ireland, Bs Ishkhanov, El Isupov, Mm Ito, D Jenkins, Hs Jo, K Joo, Hg Juengst, N Kalantarians, Jd Kellie, M Khandaker, W Kim, A Klein, Fj Klein, Av Klimenko, M Kossov, Z Krahn, Lh Kramer, V Kubarovsky, J Kuhn, Se Kuhn, Sv Kuleshov, J Lachniet, Jm Laget, J Langheinrich, D Lawrence, J Li, K Livingston, Hy Lu, M Maccormick, N Markov, P Mattione, S Mcaleer, M Mccracken, B Mckinnon, Jwc Mcnabb, Ba Mecking, S Mehrabyan, Jj Melone, Md Mestayer, Ca Meyer, T Mibe, K Mikhailov, R Minehart, M Mirazita, R Miskimen, V Mokeev, K Moriya, Sa Morrow, M Moteabbed, J Mueller, E Munevar, Gs Mutchler, P Nadel-Turonski, J Napolitano, R Nasseripour, S Niccolai, G Niculescu, I Niculescu, Bb Niczyporuk, Mr Niroula, Ra Niyazov, M Nozar, Gv O'Rielly, Ai Ostrovidov, K Park, E Pasyuk, C Paterson, Sa Pereira, Sa Philips, J Pierce, N Pivnyuk, D Pocanic, O Pogorelko, E Polli, I Popa, S Pozdniakov, Bm Preedom, Jw Price, Y Prok, D Protopopescu, Lm Qin, Ba Raue, G Riccardi, Bg Ritchie, G Rosner, P Rossi, Pd Rubin, F Sabatie, J Salamanca, C Salgado, Jp Santoro, V Sapunenko, Ra Schumacher, Vs Serov, Yg Sharabian, Nv Shvedunov, Av Skabelin, Es Smith, Lc Smith, Di Sober, D Sokhan, A Stavinsky, Ss Stepanyan, S Stepanyan, Be Stokes, P Stoler, Ii Strakovsky, S Strauch, M Taiuti, Dj Tedeschi, U Thoma, A Tkabladze, S Tkachenko, L Todor, L Trentadue, C Tur, M Ungaro, Mf Vineyard, Av Vlassov, Dp Watts, Lb Weinstein, Dp Weygand, M Williams, E Wolin, Mh Wood, A Yegneswaran, L Zana, J Zhang, B Zhao, Zw Zhao
Measurement Of Semi-Inclusive Pi(+) Electroproduction Off The Proton, M Osipenko, M Ripani, G Ricco, H Avakian, R De Vita, G Adams, Mj Amaryan, P Ambrozewicz, M Anghinolfi, G Asryan, H Bagdasaryan, N Baillie, Jp Ball, Na Baltzell, S Barrow, M Battaglieri, I Bedlinskiy, M Bektasoglu, M Bellis, N Benmouna, Bl Berman, As Biselli, L Blaszczyk, Be Bonner, S Bouchigny, S Boiarinov, R Bradford, D Branford, Wj Briscoe, Wk Brooks, S Bultmann, Vd Burkert, C Butuceanu, Jr Calarco, Sl Careccia, Ds Carman, A Cazes, F Ceccopieri, S Chen, Pl Cole, P Collins, P Coltharp, P Corvisiero, D Crabb, V Crede, Jp Cummings, N Dashyan, R De Masi, E De Sanctis, Pv Degtyarenko, H Denizli, L Dennis, A Deur, Kv Dharmawardane, Ks Dhuga, R Dickson, C Djalali, Ge Dodge, J Donnelly, D Doughty, V Drozdov, M Dugger, S Dytman, Op Dzyubak, H Egiyan, Ks Egiyan, L El Fassi, L Elouadrhiri, P Eugenio, R Fatemi, G Fedotov, G Feldman, Rj Feuerbach, H Funsten, M Garcon, G Gavalian, Gp Gilfoyle, Kl Giovanetti, Fx Girod, Jt Goetz, E Golovach, A Gonenc, Cio Gordon, Rw Gothe, Ka Griffioen, M Guidal, M Guillo, N Guler, L Guo, V Gyurjyan, C Hadjidakis, K Hafidi, H Hakobyan, Rs Hakobyan, C Hanretty, J Hardie, N Hassall, D Heddle, Fw Hersman, K Hicks, I Hleiqawi, M Holtrop, Ce Hyde-Wright, Y Ilieva, A Ilyichev, Dg Ireland, Bs Ishkhanov, El Isupov, Mm Ito, D Jenkins, Hs Jo, K Joo, Hg Juengst, N Kalantarians, Jd Kellie, M Khandaker, W Kim, A Klein, Fj Klein, Av Klimenko, M Kossov, Z Krahn, Lh Kramer, V Kubarovsky, J Kuhn, Se Kuhn, Sv Kuleshov, J Lachniet, Jm Laget, J Langheinrich, D Lawrence, J Li, K Livingston, Hy Lu, M Maccormick, N Markov, P Mattione, S Mcaleer, M Mccracken, B Mckinnon, Jwc Mcnabb, Ba Mecking, S Mehrabyan, Jj Melone, Md Mestayer, Ca Meyer, T Mibe, K Mikhailov, R Minehart, M Mirazita, R Miskimen, V Mokeev, K Moriya, Sa Morrow, M Moteabbed, J Mueller, E Munevar, Gs Mutchler, P Nadel-Turonski, J Napolitano, R Nasseripour, S Niccolai, G Niculescu, I Niculescu, Bb Niczyporuk, Mr Niroula, Ra Niyazov, M Nozar, Gv O'Rielly, Ai Ostrovidov, K Park, E Pasyuk, C Paterson, Sa Pereira, Sa Philips, J Pierce, N Pivnyuk, D Pocanic, O Pogorelko, E Polli, I Popa, S Pozdniakov, Bm Preedom, Jw Price, Y Prok, D Protopopescu, Lm Qin, Ba Raue, G Riccardi, Bg Ritchie, G Rosner, P Rossi, Pd Rubin, F Sabatie, J Salamanca, C Salgado, Jp Santoro, V Sapunenko, Ra Schumacher, Vs Serov, Yg Sharabian, Nv Shvedunov, Av Skabelin, Es Smith, Lc Smith, Di Sober, D Sokhan, A Stavinsky, Ss Stepanyan, S Stepanyan, Be Stokes, P Stoler, Ii Strakovsky, S Strauch, M Taiuti, Dj Tedeschi, U Thoma, A Tkabladze, S Tkachenko, L Todor, L Trentadue, C Tur, M Ungaro, Mf Vineyard, Av Vlassov, Dp Watts, Lb Weinstein, Dp Weygand, M Williams, E Wolin, Mh Wood, A Yegneswaran, L Zana, J Zhang, B Zhao, Zw Zhao
Michael Williams
Semi-inclusive π+ [pi superscript +] electroproduction on protons has been measured with the CLAS detector at Jefferson Lab. The measurement was performed on a liquid-hydrogen target using a 5.75 GeV electron beam. The complete five-fold differential cross sections were measured over a wide kinematic range including the complete range of azimuthal angles between hadronic and leptonic planes, ϕ [phi], enabling us to separate the ϕ-dependent [phi-dependent] terms. Our measurements of the ϕ-independent [phi-independent] term of the cross section at low Bjorken x were found to be in fairly good agreement with pQCD calculations. Indeed, the conventional current fragmentation calculation can …
Electroproduction Of P Pi(+)Pi(-) Off Protons At 0.2 < Q(2) < 0.6 Gev2 And 1.3 < W < 1.57 Gev With The Clas Detector, Gv Fedotov, Vi Mokeev, Vd Burkert, L Elouadrhiri, En Golovatch, Bs Ishkhanov, El Isupov, Nv Shvedunov, G Adams, Mj Amaryan, P Ambrozewicz, M Anghinolfi, B Asavapibhop, G Asryan, H Avakian, H Baghdasaryan, N Baillie, Jp Ball, Na Baltzell, V Batourine, M Battaglieri, I Bedlinskiy, M Bektasoglu, M Bellis, N Benmouna, As Biselli, Be Bonner, S Bouchigny, S Boiarinov, R Bradford, D Branford, Wk Brooks, S Bultmann, C Butuceanu, Jr Calarco, Sl Careccia, Ds Carman, B Carnahan, S Chen, Pl Cole, P Coltharp, P Corvisiero, D Crabb, H Crannell, V Crede, Jp Cummings, Nb Dashyan, E De Sanctis, R De Vita, Pv Degtyarenko, H Denizli, L Dennis, Kv Dharmawardane, R Dickson, C Djalali, Ge Dodge, J Donnelly, D Doughty, M Dugger, S Dytman, Op Dzyubak, H Egiyan, Ks Egiyan, P Eugenio, R Fatemi, Rj Feuerbach, Ta Forest, H Funsten, G Gavalian, Ng Gevorgyan, Gp Gilfoyle, Kl Giovanetti, Fx Girod, Jt Goetz, Rw Gothe, Ka Griffioen, M Guidal, M Guillo, N Guler, L Guo, V Gyurjyan, C Hadjidakis, J Hardie, N Hassall, Fw Hersman, K Hicks, I Hleiqawi, M Holtrop, J Hu, M Huertas, Ce Hyde, Y Ilieva, Dg Ireland, Mm Ito, D Jenkins, Hs Jo, K Joo, Hg Juengst, Jd Kellie, M Khandaker, Ky Kim, K Kim, W Kim, A Klein, Fj Klein, A Klimenko, M Klusman, Z Krahn, Lh Kramer, V Kubarovsky, J Kuhn, Se Kuhn, S Kuleshov, J Lachniet, Jm Laget, J Langheinrich, D Lawrence, T Lee, K Livingston, N Markov, M Mccracken, B Mckinnon, Jwc Mcnabb, Ba Mecking, Md Mestayer, Ca Meyer, T Mibe, K Mikhailov, T Mineeva, R Minehart, M Mirazita, R Miskimen, K Moriya, Sa Morrow, J Mueller, Gs Mutchler, P Nadel-Turonski, R Nasseripour, S Niccolai, G Niculescu, I Niculescu, Bb Niczyporuk, Ra Niyazov, Gv O'Rielly, M Osipenko, Ai Ostrovidov, K Park, E Pasyuk, C Paterson, J Pierce, N Pivnyuk, D Pocanic, O Pogorelko, S Pozdniakov, Jw Price, Y Prok, D Protopopescu, Ba Raue, G Ricco, M Ripani, Bg Ritchie, G Rosner, P Rossi, D Rowntree, Pd Rubin, F Sabatie, C Salgado, Jp Santoro, V Sapunenko, Ra Schumacher, Vs Serov, Yg Sharabian, D Sharov, J Shaw, Es Smith, Lc Smith, Di Sober, A Stavinsky, S Stepanyan, Be Stokes, P Stoler, K Stopani, S Strauch, M Taiuti, S Taylor, Dj Tedeschi, R Thompson, A Tkabladze, S Tkachenko, L Todor, C Tur, M Ungaro, Mf Vineyard, Av Vlassov, Lb Weinstein, Dp Weygand, M Williams, E Wolin, Mh Wood, A Yegneswaran, L Zana, J Zhang
Electroproduction Of P Pi(+)Pi(-) Off Protons At 0.2 < Q(2) < 0.6 Gev2 And 1.3 < W < 1.57 Gev With The Clas Detector, Gv Fedotov, Vi Mokeev, Vd Burkert, L Elouadrhiri, En Golovatch, Bs Ishkhanov, El Isupov, Nv Shvedunov, G Adams, Mj Amaryan, P Ambrozewicz, M Anghinolfi, B Asavapibhop, G Asryan, H Avakian, H Baghdasaryan, N Baillie, Jp Ball, Na Baltzell, V Batourine, M Battaglieri, I Bedlinskiy, M Bektasoglu, M Bellis, N Benmouna, As Biselli, Be Bonner, S Bouchigny, S Boiarinov, R Bradford, D Branford, Wk Brooks, S Bultmann, C Butuceanu, Jr Calarco, Sl Careccia, Ds Carman, B Carnahan, S Chen, Pl Cole, P Coltharp, P Corvisiero, D Crabb, H Crannell, V Crede, Jp Cummings, Nb Dashyan, E De Sanctis, R De Vita, Pv Degtyarenko, H Denizli, L Dennis, Kv Dharmawardane, R Dickson, C Djalali, Ge Dodge, J Donnelly, D Doughty, M Dugger, S Dytman, Op Dzyubak, H Egiyan, Ks Egiyan, P Eugenio, R Fatemi, Rj Feuerbach, Ta Forest, H Funsten, G Gavalian, Ng Gevorgyan, Gp Gilfoyle, Kl Giovanetti, Fx Girod, Jt Goetz, Rw Gothe, Ka Griffioen, M Guidal, M Guillo, N Guler, L Guo, V Gyurjyan, C Hadjidakis, J Hardie, N Hassall, Fw Hersman, K Hicks, I Hleiqawi, M Holtrop, J Hu, M Huertas, Ce Hyde, Y Ilieva, Dg Ireland, Mm Ito, D Jenkins, Hs Jo, K Joo, Hg Juengst, Jd Kellie, M Khandaker, Ky Kim, K Kim, W Kim, A Klein, Fj Klein, A Klimenko, M Klusman, Z Krahn, Lh Kramer, V Kubarovsky, J Kuhn, Se Kuhn, S Kuleshov, J Lachniet, Jm Laget, J Langheinrich, D Lawrence, T Lee, K Livingston, N Markov, M Mccracken, B Mckinnon, Jwc Mcnabb, Ba Mecking, Md Mestayer, Ca Meyer, T Mibe, K Mikhailov, T Mineeva, R Minehart, M Mirazita, R Miskimen, K Moriya, Sa Morrow, J Mueller, Gs Mutchler, P Nadel-Turonski, R Nasseripour, S Niccolai, G Niculescu, I Niculescu, Bb Niczyporuk, Ra Niyazov, Gv O'Rielly, M Osipenko, Ai Ostrovidov, K Park, E Pasyuk, C Paterson, J Pierce, N Pivnyuk, D Pocanic, O Pogorelko, S Pozdniakov, Jw Price, Y Prok, D Protopopescu, Ba Raue, G Ricco, M Ripani, Bg Ritchie, G Rosner, P Rossi, D Rowntree, Pd Rubin, F Sabatie, C Salgado, Jp Santoro, V Sapunenko, Ra Schumacher, Vs Serov, Yg Sharabian, D Sharov, J Shaw, Es Smith, Lc Smith, Di Sober, A Stavinsky, S Stepanyan, Be Stokes, P Stoler, K Stopani, S Strauch, M Taiuti, S Taylor, Dj Tedeschi, R Thompson, A Tkabladze, S Tkachenko, L Todor, C Tur, M Ungaro, Mf Vineyard, Av Vlassov, Lb Weinstein, Dp Weygand, M Williams, E Wolin, Mh Wood, A Yegneswaran, L Zana, J Zhang
Michael Williams
This paper reports on the most comprehensive data set obtained on differential and fully integrated cross sections for the process ep→e'pπ+π- [ep→e prime p pi superscript + pi superscript -]. The data were collected with the CLAS detector at Jefferson Laboratory. Measurements were carried out in the as yet unexplored kinematic region of photon virtuality 0.2
Measurement Of Direct F(0)(980) Photoproduction On The Proton, R De Vita, Ap Szczepaniak, Kp Adhikari, M Aghasyan, Mj Amaryan, P Ambrozewicz, M Anghinolfi, G Asryan, H Avakian, H Bagdasaryan, N Baillie, Jp Ball, Na Baltzell, V Batourine, I Bedlinskiy, M Bellis, N Benmouna, Bl Berman, L Bibrzycki, As Biselli, C Bookwalter, S Bouchigny, S Boiarinov, R Bradford, D Branford, Wj Briscoe, Wk Brooks, S Bltmann, Vd Burkert, Jr Calarco, Sl Careccia, Ds Carman, L Casey, S Chen, L Cheng, E Clinton, Pl Cole, P Collins, D Crabb, H Crannell, V Crede, Jp Cummings, D Dale, A Daniel, N Dashyan, R De Masi, E De Sanctis, Pv Degtyarenko, A Deur, S Dhamija, Kv Dharmawardane, R Dickson, C Djalali, Ge Dodge, J Donnelly, D Doughty, M Dugger, Op Dzyubak, H Egiyan, Ks Egiyan, L El Fassi, L Elouadrhiri, P Eugenio, G Fedotov, R Fersch, Ta Forest, A Fradi, My Gabrielyan, L Gan, M Garoon, A Gasparian, G Gavalian, N Gevorgyan, Gp Gilfoyle, Kl Giovanetti, Fx Girod, O Glamazdin, J Goett, Jt Goetz, W Gohn, E Golovatch, Cio Gordon, Rw Gothe, L Graham, Ka Griffioen, M Guidal, N Guler, L Guo, V Gyurjyan, C Hadjidakis, K Hafidi, H Hakobyan, Rs Hakobyan, C Hanretty, J Hardie, N Hassall, D Heddle, Fw Hersman, K Hicks, I Hleiqawi, M Holtrop, Ce Hyde, Y Ilieva, Dg Ireland, Bs Ishkhanov, El Isupov, Mm Ito, D Jenkins, Hs Jo, Jr Johnstone, K Joo, Hg Juengst, T Kageya, N Kalantarians, D Keller, Jd Kellie, M Khandaker, P Khetarpal, W Kim, A Klein, Fj Klein, Av Klimenko, P Konczykowski, M Kossov, Z Krahn, Lh Kramer, V Kubarovsky, J Kuhn, Se Kuhn, Sv Kuleshov, V Kuznetsov, J Lachniet, Jm Laget, J Langheinrich, D Lawrence, T Lee, L Lesniak, J Li, K Livingston, M Lowry, Hy Lu, M Maccormick, S Malace, N Markov, P Mattione, Me Mccracken, B Mckinnon, Ba Mecking, Jj Melone, Md Mestayer, Ca Meyer, T Mibe, K Mikhailov, T Mineeva, R Minehart, M Mirazita, R Miskimen, V Mochalov, V Mokeev, B Moreno, K Moriya, Sa Morrow, M Moteabbed, E Munevar, Gs Mutchler, P Nadel-Turonski, I Nakagawa, R Nasseripour, S Niccolai, G Niculescu, I Niculescu, Bb Niczyporuk, Mr Niroula, Ra Niyazov, M Nozar, M Osipenko, Ai Ostrovidov, K Park, S Park, E Pasyuk, M Paris, C Paterson, Sa Pereira, J Pierce, N Pivnyuk, D Pocanic, O Pogorelko, S Pozdniakov, Jw Price, Y Prok, D Protopopescu, Ba Raue, G Riccardi, G Ricco, M Ripani, Bg Ritchie, G Rosner, P Rossi, F Sabati, Ms Saini, J Salamanca, C Salgado, A Sandorfi, Jp Santoro, V Sapunenko, D Schott, Ra Schumacher, Vs Serov, Yg Sharabian, D Sharov, Nv Shvedunov, Es Smith, Lc Smith, Di Sober, D Sokhan, A Starostin, A Stavinsky, S Stepanyan, Ss Stepanyan, Be Stokes, P Stoler, Ka Stopani, Ii Strakovsky, S Strauch, M Taiuti, Dj Tedeschi, A Teymurazyan, A Tkabladze, S Tkachenko, L Todor, C Tur, M Ungaro, Mf Vineyard, Av Vlassov, Dp Watts, X Wei, Lb Weinstein, Dp Weygand, M Williams, E Wolin, Mh Wood, A Yegneswaran, M Yurov, L Zana, J Zhang, B Zhao, M Battaglieri
Measurement Of Direct F(0)(980) Photoproduction On The Proton, R De Vita, Ap Szczepaniak, Kp Adhikari, M Aghasyan, Mj Amaryan, P Ambrozewicz, M Anghinolfi, G Asryan, H Avakian, H Bagdasaryan, N Baillie, Jp Ball, Na Baltzell, V Batourine, I Bedlinskiy, M Bellis, N Benmouna, Bl Berman, L Bibrzycki, As Biselli, C Bookwalter, S Bouchigny, S Boiarinov, R Bradford, D Branford, Wj Briscoe, Wk Brooks, S Bltmann, Vd Burkert, Jr Calarco, Sl Careccia, Ds Carman, L Casey, S Chen, L Cheng, E Clinton, Pl Cole, P Collins, D Crabb, H Crannell, V Crede, Jp Cummings, D Dale, A Daniel, N Dashyan, R De Masi, E De Sanctis, Pv Degtyarenko, A Deur, S Dhamija, Kv Dharmawardane, R Dickson, C Djalali, Ge Dodge, J Donnelly, D Doughty, M Dugger, Op Dzyubak, H Egiyan, Ks Egiyan, L El Fassi, L Elouadrhiri, P Eugenio, G Fedotov, R Fersch, Ta Forest, A Fradi, My Gabrielyan, L Gan, M Garoon, A Gasparian, G Gavalian, N Gevorgyan, Gp Gilfoyle, Kl Giovanetti, Fx Girod, O Glamazdin, J Goett, Jt Goetz, W Gohn, E Golovatch, Cio Gordon, Rw Gothe, L Graham, Ka Griffioen, M Guidal, N Guler, L Guo, V Gyurjyan, C Hadjidakis, K Hafidi, H Hakobyan, Rs Hakobyan, C Hanretty, J Hardie, N Hassall, D Heddle, Fw Hersman, K Hicks, I Hleiqawi, M Holtrop, Ce Hyde, Y Ilieva, Dg Ireland, Bs Ishkhanov, El Isupov, Mm Ito, D Jenkins, Hs Jo, Jr Johnstone, K Joo, Hg Juengst, T Kageya, N Kalantarians, D Keller, Jd Kellie, M Khandaker, P Khetarpal, W Kim, A Klein, Fj Klein, Av Klimenko, P Konczykowski, M Kossov, Z Krahn, Lh Kramer, V Kubarovsky, J Kuhn, Se Kuhn, Sv Kuleshov, V Kuznetsov, J Lachniet, Jm Laget, J Langheinrich, D Lawrence, T Lee, L Lesniak, J Li, K Livingston, M Lowry, Hy Lu, M Maccormick, S Malace, N Markov, P Mattione, Me Mccracken, B Mckinnon, Ba Mecking, Jj Melone, Md Mestayer, Ca Meyer, T Mibe, K Mikhailov, T Mineeva, R Minehart, M Mirazita, R Miskimen, V Mochalov, V Mokeev, B Moreno, K Moriya, Sa Morrow, M Moteabbed, E Munevar, Gs Mutchler, P Nadel-Turonski, I Nakagawa, R Nasseripour, S Niccolai, G Niculescu, I Niculescu, Bb Niczyporuk, Mr Niroula, Ra Niyazov, M Nozar, M Osipenko, Ai Ostrovidov, K Park, S Park, E Pasyuk, M Paris, C Paterson, Sa Pereira, J Pierce, N Pivnyuk, D Pocanic, O Pogorelko, S Pozdniakov, Jw Price, Y Prok, D Protopopescu, Ba Raue, G Riccardi, G Ricco, M Ripani, Bg Ritchie, G Rosner, P Rossi, F Sabati, Ms Saini, J Salamanca, C Salgado, A Sandorfi, Jp Santoro, V Sapunenko, D Schott, Ra Schumacher, Vs Serov, Yg Sharabian, D Sharov, Nv Shvedunov, Es Smith, Lc Smith, Di Sober, D Sokhan, A Starostin, A Stavinsky, S Stepanyan, Ss Stepanyan, Be Stokes, P Stoler, Ka Stopani, Ii Strakovsky, S Strauch, M Taiuti, Dj Tedeschi, A Teymurazyan, A Tkabladze, S Tkachenko, L Todor, C Tur, M Ungaro, Mf Vineyard, Av Vlassov, Dp Watts, X Wei, Lb Weinstein, Dp Weygand, M Williams, E Wolin, Mh Wood, A Yegneswaran, M Yurov, L Zana, J Zhang, B Zhao, M Battaglieri
Michael Williams
We report on the results of the first measurement of exclusive f_{0}(980) meson photoproduction on protons for E_{gamma}=3.0-3.8 GeV and -t=0.4-1.0 GeV2. Data were collected with the CLAS detector at the Thomas Jefferson National Accelerator Facility. The resonance was detected via its decay in the pi;{+}pi;{-} channel by performing a partial wave analysis of the reaction gammap-->ppi;{+}pi;{-}. Clear evidence of the f_{0}(980) meson was found in the interference between P and S waves at M_{pi;{+}pi;{-}} approximately 1 GeV. The S-wave differential cross section integrated in the mass range of the f_{0}(980) was found to be a factor of about …
Search For The Photoexcitation Of Exotic Mesons In The Pi(+)Pi(+)Pi(-) System, M Nozar, C Salgado, Dp Weygand, L Guo, G Adams, J Li, P Eugenio, Mj Amaryan, M Anghinolfi, G Asryan, H Avakian, H Bagdasaryan, N Baillie, Jp Ball, Na Baltzell, S Barrow, M Battaglieri, I Bedlinskiy, M Bektasoglu, M Bellis, N Benmouna, Bl Berman, As Biselli, L Blaszczyk, Be Bonner, S Bouchigny, S Boiarinov, R Bradford, D Branford, Wj Briscoe, Wk Brooks, S Bultmann, Vd Burkert, C Butuceanu, Jr Calarco, Sl Careccia, Ds Carman, B Carnahan, L Casey, A Cazes, S Chen, L Cheng, Pl Cole, P Collins, P Coltharp, D Cords, P Corvisiero, D Crabb, H Crannell, V Crede, Jp Cummings, D Dale, N Dashyan, R De Masi, R De Vita, E De Sanctis, Pv Degtyarenko, H Denizli, L Dennis, A Deur, Kv Dharmawardane, Ks Dhuga, R Dickson, C Djalali, Ge Dodge, D Doughty, M Dugger, S Dytman, Op Dzyubak, H Egiyan, Ks Egiyan, L El Fassi, L Elouadrhiri, R Fatemi, G Fedotov, Rj Feuerbach, Ta Forest, A Fradi, H Funsten, M Garcon, G Gavalian, N Gevorgyan, Gp Gilfoyle, Kl Giovanetti, Fx Girod, Jt Goetz, Rw Gothe, Ka Griffioen, M Guidal, M Guillo, N Guler, V Gyurjyan, C Hadjidakis, K Hafidi, H Hakobyan, C Hanretty, J Hardie, N Hassall, D Heddle, Fw Hersman, K Hicks, I Hleiqawi, M Holtrop, Ce Hyde-Wright, Y Ilieva, Dg Ireland, Bs Ishkhanov, El Isupov, Mm Ito, D Jenkins, Hs Jo, Jr Johnstone, K Joo, Hg Juengst, N Kalantarians, Jd Kellie, M Khandaker, W Kim, A Klein, Fj Klein, M Kossov, Z Krahn, Lh Kramer, V Kubarovsky, J Kuhn, Se Kuhn, Sv Kuleshov, V Kuznetsov, J Lachniet, Jm Laget, J Langheinrich, D Lawrence, K Livingston, Hy Lu, M Maccormick, N Markov, P Mattione, S Mcaleer, B Mckinnon, Jwc Mcnabb, Ba Mecking, S Mehrabyan, Md Mestayer, Ca Meyer, T Mibe, K Mikhailov, M Mirazita, R Miskimen, V Mokeev, B Moreno, K Moriya, Sa Morrow, M Moteabbed, J Mueller, E Munevar, Gs Mutchler, P Nadel-Turonski, R Nasseripour, S Niccolai, G Niculescu, I Niculescu, Bb Niczyporuk, Mr Niroula, Ra Niyazov, Gv O'Rielly, M Osipenko, Ai Ostrovidov, K Park, E Pasyuk, C Paterson, Sa Pereira, Sa Philips, J Pierce, N Pivnyuk, D Pocanic, O Pogorelko, E Polli, I Popa, S Pozdniakov, Bm Preedom, Jw Price, Y Prok, D Protopopescu, Lm Qin, Ba Raue, G Riccardi, G Ricco, M Ripani, Bg Ritchie, F Ronchetti, G Rosner, P Rossi, Pd Rubin, F Sabatie, J Salamanca, Jp Santoro, V Sapunenko, Ra Schumacher, Vs Serov, Yg Sharabian, D Sharov, Nv Shvedunov, Av Skabelin, Es Smith, Lc Smith, Di Sober, D Sokhan, A Stavinsky, Ss Stepanyan, S Stepanyan, Be Stokes, P Stoler, Ii Strakovsky, S Strauch, M Taiuti, Dj Tedeschi, U Thoma, A Tkabladze, S Tkachenko, L Todor, M Ungaro, Mf Vineyard, Av Vlassov, Dp Watts, Lb Weinstein, M Williams, E Wolin, Mh Wood, A Yegneswaran, L Zana, J Zhang, B Zhao, Zw Zhao
Search For The Photoexcitation Of Exotic Mesons In The Pi(+)Pi(+)Pi(-) System, M Nozar, C Salgado, Dp Weygand, L Guo, G Adams, J Li, P Eugenio, Mj Amaryan, M Anghinolfi, G Asryan, H Avakian, H Bagdasaryan, N Baillie, Jp Ball, Na Baltzell, S Barrow, M Battaglieri, I Bedlinskiy, M Bektasoglu, M Bellis, N Benmouna, Bl Berman, As Biselli, L Blaszczyk, Be Bonner, S Bouchigny, S Boiarinov, R Bradford, D Branford, Wj Briscoe, Wk Brooks, S Bultmann, Vd Burkert, C Butuceanu, Jr Calarco, Sl Careccia, Ds Carman, B Carnahan, L Casey, A Cazes, S Chen, L Cheng, Pl Cole, P Collins, P Coltharp, D Cords, P Corvisiero, D Crabb, H Crannell, V Crede, Jp Cummings, D Dale, N Dashyan, R De Masi, R De Vita, E De Sanctis, Pv Degtyarenko, H Denizli, L Dennis, A Deur, Kv Dharmawardane, Ks Dhuga, R Dickson, C Djalali, Ge Dodge, D Doughty, M Dugger, S Dytman, Op Dzyubak, H Egiyan, Ks Egiyan, L El Fassi, L Elouadrhiri, R Fatemi, G Fedotov, Rj Feuerbach, Ta Forest, A Fradi, H Funsten, M Garcon, G Gavalian, N Gevorgyan, Gp Gilfoyle, Kl Giovanetti, Fx Girod, Jt Goetz, Rw Gothe, Ka Griffioen, M Guidal, M Guillo, N Guler, V Gyurjyan, C Hadjidakis, K Hafidi, H Hakobyan, C Hanretty, J Hardie, N Hassall, D Heddle, Fw Hersman, K Hicks, I Hleiqawi, M Holtrop, Ce Hyde-Wright, Y Ilieva, Dg Ireland, Bs Ishkhanov, El Isupov, Mm Ito, D Jenkins, Hs Jo, Jr Johnstone, K Joo, Hg Juengst, N Kalantarians, Jd Kellie, M Khandaker, W Kim, A Klein, Fj Klein, M Kossov, Z Krahn, Lh Kramer, V Kubarovsky, J Kuhn, Se Kuhn, Sv Kuleshov, V Kuznetsov, J Lachniet, Jm Laget, J Langheinrich, D Lawrence, K Livingston, Hy Lu, M Maccormick, N Markov, P Mattione, S Mcaleer, B Mckinnon, Jwc Mcnabb, Ba Mecking, S Mehrabyan, Md Mestayer, Ca Meyer, T Mibe, K Mikhailov, M Mirazita, R Miskimen, V Mokeev, B Moreno, K Moriya, Sa Morrow, M Moteabbed, J Mueller, E Munevar, Gs Mutchler, P Nadel-Turonski, R Nasseripour, S Niccolai, G Niculescu, I Niculescu, Bb Niczyporuk, Mr Niroula, Ra Niyazov, Gv O'Rielly, M Osipenko, Ai Ostrovidov, K Park, E Pasyuk, C Paterson, Sa Pereira, Sa Philips, J Pierce, N Pivnyuk, D Pocanic, O Pogorelko, E Polli, I Popa, S Pozdniakov, Bm Preedom, Jw Price, Y Prok, D Protopopescu, Lm Qin, Ba Raue, G Riccardi, G Ricco, M Ripani, Bg Ritchie, F Ronchetti, G Rosner, P Rossi, Pd Rubin, F Sabatie, J Salamanca, Jp Santoro, V Sapunenko, Ra Schumacher, Vs Serov, Yg Sharabian, D Sharov, Nv Shvedunov, Av Skabelin, Es Smith, Lc Smith, Di Sober, D Sokhan, A Stavinsky, Ss Stepanyan, S Stepanyan, Be Stokes, P Stoler, Ii Strakovsky, S Strauch, M Taiuti, Dj Tedeschi, U Thoma, A Tkabladze, S Tkachenko, L Todor, M Ungaro, Mf Vineyard, Av Vlassov, Dp Watts, Lb Weinstein, M Williams, E Wolin, Mh Wood, A Yegneswaran, L Zana, J Zhang, B Zhao, Zw Zhao
Michael Williams
A search for exotic mesons in the pi;{+}pi;{+}pi;{-} system photoproduced by the charge exchange reaction gammap-->pi;{+}pi;{+}pi;{-}(n) was carried out by the CLAS Collaboration at Jefferson Lab. A tagged-photon beam with energies in the 4.8 to 5.4 GeV range, produced through bremsstrahlung from a 5.744 GeV electron beam, was incident on a liquid-hydrogen target. A partial wave analysis was performed on a sample of 83 000 events, the highest such statistics to date in this reaction at these energies. The main objective of this study was to look for the photoproduction of an exotic J;{PC}=1;{-+} resonant state in the 1 …