Physical Sciences and Mathematics Commons^™

Linking Lithology And Land Use To Sources Of Dissolved And Particulate Organic Matter In Headwaters Of A Temperate, Passive-Margin River System, Steven T. Petsch, B. E. Longwortha, P. A. Raymond, J. E. Bauerc

Steven T. Petsch

A number of rivers have been found to transport highly aged organic matter [OM]; however, the sources of this aged material remain a matter of debate. One potential source may be erosion and weathering of headwater lithologies rich in ancient sedimentary OM. In this study, waters, suspended particulates, streambed sediments, rocks and soils from fourteen small headwater watersheds of a mid-size, temperate, passive margin river were sampled and characterized by Δ14C, δ13C, and POC/TPN ratios to identify sources of particulate and dissolved OM delivered to the river mainstem. These headwater sites encompass a range in lithology (OM-rich shales, OM-lean carbonate/mudstone …

Sea Ice Feedback And Cenozoic Evolution Of Antarctic Climate And Ice Sheets, Robert M. Deconto, David Pollard, David Harwood

Robert M DeConto

The extent and thickness of Antarctic sea ice have important climatic effects on radiation balance, energy transfer between the atmosphere and ocean, and moisture availability. This paper explores the role of sea ice and related feedbacks in the Cenozoic evolution of Antarctic climate and ice sheets, using a numerical climate model with explicit, dynamical representations of sea ice and continental ice sheets. In a scenario of decreasing Cenozoic greenhouse gas concentrations, our model initiates continental glaciation before any significant sea ice forms around the continent. Once variable ice sheets are established, seasonal sea ice distribution is highly sensitive to orbital …

Salinity Constraints On Subsurface Archaeal Diversity And Methanogenesis In Sedimentary Rock Rich In Organic Matter, Steven T. Petsch, P. Waldron, A. M. Martini, K. Nüsslein

Steven T. Petsch

The diversity of microorganisms active within sedimentary rocks provides important controls on the geochemistry of many subsurface environments. In particular, biodegradation of organic matter in sedimentary rocks contributes to the biogeochemical cycling of carbon and other elements and strongly impacts the recovery and quality of fossil fuel resources. In this study, archaeal diversity was investigated along a salinity gradient spanning 8 to 3,490 mM Cl− in a subsurface shale rich in CH4 derived from biodegradation of sedimentary hydrocarbons. Shale pore waters collected from wells in the main CH4-producing zone lacked electron acceptors such as O2, NO3−, Fe3+, or SO42−. Acetate …

Nasa’S S'Cool Program, Rob Snyder

STEM Earth Central

NASA's S'COOL program gives students an opportunity to provide "ground truth" measurements to help NASA verify that data collected by CERES (Clouds and the Earth's Radiant Energy System) instruments. The CERES instrumentation has been launched into polar obits on three satellites

Global Warming Or Climate Hysteria?, Richard Yuretich

STEM Earth Central

No abstract provided.

Eratosthenes' Proportion - Measure The Diameter Of The Earth, Stephen E. Schneider

STEM Earth Central

Objective: To use a midday shadow on or close to the day of an Equinox to calculate Earth’s Polar Circumference.

True Scale Solar System Models, Stephen E. Schneider

STEM Earth Central

Objectives:

To construct a true scale model of the solar system

To understand the size of Earth relative to the Solar System

To comprehend the sizes of planets versus the spaces between them

Planet Longitudes, Stephen E. Schneider

STEM Earth Central

Objectives:

To apply the concept of Longitude to the location of planets in their orbits.

To predict what planets can be seen in the night sky on any date.

Measuring Carbon Dioxide With Btb, Stephen E. Schneider

STEM Earth Central

No abstract provided.

The Earth's Energy Balance, Richard Yuretich

STEM Earth Central

No abstract provided.

Overview: Exploring Earth System Science, Richard F. Yuretich, Stephen E. Schneider, Rob Snyder, Morton Sternheim

STEM Earth Central

Earth Science topics that can be used in other science teaching

Mapping, GPS, GIS applications, geology, water, environmental issues

Hands-on activities and relevant internet resources

Designing and conducting research project

Applications to teaching in the K12 classroom

Curriculum concept component

Optional extensions

The Hydrologic Cycle, Richard Yuretich

STEM Earth Central

No abstract provided.

Global Warming - Some Astrophysical Perspectives, Stephen E. Schneider

STEM Earth Central

No abstract provided.

Ozone: What Is It?, Stephen E. Schneider

STEM Earth Central

No abstract provided.

Map The Campus With Gps, Richard Yuretich, Rob Snyder

STEM Earth Central

Objective: To use a Global Positioning System device to collect data in order to construct a campus map.

Note: These instructions are for a Garmin 72 GPS. Refer to the GPS Basics document, the manual, or an on-line manual at http://www.garmin.com/products/gps72/ for additional information

Petrology, Structural Geology, And Significance Of Mn-Andalusite From The Lower Ortega Quartzite, Tusas Mts., Nm, Usa, Nancy A. Price

Masters Theses 1911 - February 2014

The Proterozoic syn-orogenic supra-crustal package exposed in the Tusas Mountain Range in northern New Mexico includes the anomalously thick, clean, ultramature Ortega Formation quartzite (Bauer and Williams, 1989). A unique Mn-bearing horizon spans the basal contact of the quartzite and contains Mn-andalusite, quartz, hematite, rutile, zircon, monazite, phyllosilicates, and locally kyanite and gahnite in intermittent aluminous, hematite-bearing layers, on the surface of cross-beds, concentrated in high strain zones, and on cleavage planes. Large-scale Mn zoning in Mn-andalusite results from a decrease in Mn content away from localized Mn highs (XMn of up to 0.76) that commonly correspond with the location …

2007 Newsletter, Morton Sternheim

STEM Education Institute Newsletters

NANOTECHNOLOGY Summer 2007 Institute p. 3

EARTH CENTRAL 2007 Ending on a High Note p. 5

PV STEMNET Has a Very Productive Year p. 4

CONFERENCE ON ALTERNATIVE CERTIFICATION FOR SCIENCE TEACHERS: Lessons Learned p. 7

NOYCE SCHOLAR travels to Washington D.C. p. 6

NOYCE SCHOLARS p. 6

STEM RAYS Completes Pilot Phase, Goes Into Full Operation p. 2

IPY STEM Polar Connections p. 4

UMASS K12 ENDS DIALUP SERVICE p. 7

SMET OR STEM: WHAT’S IN A NAME? p. 7

Proposal Abstract, Morton Sternheim, Julie Brigham-Grette

IPY STEM Polar Connections

No abstract provided.

Proposal Narrative And References, Morton Sternheim, Julie Brigham-Grette

IPY STEM Polar Connections

No abstract provided.

Variations Of Twentieth-Century Temperature And Precipitation Extreme Indicators In The Northeast United States, Michael L. Griffiths, Raymond S. Bradley

Raymond S Bradley

An examination of five temperature and five precipitation extreme indicators reveals an increase in both temperature and precipitation extremes over the 1926–2000 period in the northeast United States, with most of this increase occurring over the past four decades. Empirical orthogonal function (EOF) analysis of winter frost days (FD) and warm nights (TN90) and also winter consecutive dry days (CDD) and very wet days (R95T) over the 1950–2000 period reveals that some of the variability associated with changes in these extremes may be explained by variations in the Arctic Oscillation (AO), El Niño–Southern Oscillation (ENSO), and Pacific–North American (PNA) pattern. …

Regionalization And Democratization Through International Law: Intertwined Jurisdictions, Scales And Politics In The Columbia River Treaty, Eve Vogel

Eve Vogel

No abstract provided.

Quark-Hadron Duality In Spin Structure Functions G(1)(P) And G(1)(D), Pe Bosted, Kv Dharmawardane, Ge Dodge, Ta Forest, Se Kuhn, Y Prok, G Adams, M Amarian, P Ambrozewicz, M Anghinolfi, 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, As Biselli, Be Bonner, S Bouchigny, S Boiarinov, R Bradford, D Branford, Wk Brooks, S Bultmann, Vd Burkert, C Butuceanu, Jr Calarco, Sl Careccia, Ds Carman, B Carnahan, A Cazes, S Chen, Pl Cole, P Collins, P Coltharp, D Cords, P Corvisiero, D Crabb, H Crannell, V Crede, Jp Cummings, R De Masi, R Devita, E De Sanctis, Pv Degtyarenko, H Denizli, L Dennis, A Deur, C Djalali, J Donnelly, D Doughty, P Dragovitsch, M Dugger, S Dytman, Op Dzyubak, H Egiyan, Ks Egiyan, L Elouadrhiri, P Eugenio, R Fatemi, G Fedotov, Rj Feuerbach, H Funsten, M Garcon, G Gavalian, 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, Rs Hakobyan, J Hardie, D Heddle, Fw Hersman, K Hicks, I Hleiqawi, M Holtrop, M Huertas, Ce Hyde-Wright, Y Ilieva, Dg Ireland, Bs Ishkhanov, El Isupov, Mm Ito, D Jenkins, Hs Jo, K Joo, Hg Juengst, C Keith, Jd Kellie, M Khandaker, Ky Kim, K Kim, W Kim, A Klein, Fj Klein, M Klusman, M Kossov, Lh Kramer, V Kubarovsky, J Kuhn, Sv Kuleshov, J Lachniet, Jm Laget, J Langheinrich, D Lawrence, J Li, Acs Lima, K Livingston, H 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, L Morand, 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, S Pozdniakov, Bm Preedom, Jw Price, D Protopopescu, Lm Qin, Ba Raue, G Riccardi, G Ricco, M Ripani, F Ronchetti, G Rosner, P Rossi, D Rowntree, Pd Rubin, F Sabatie, C Salgado, Jp Santoro, V Sapunenko, Ra Schumacher, Vs Serov, Yg Sharabian, J Shaw, Nv Shvedunov, Av Skabelin, Es Smith, Lc Smith, Di Sober, A Stavinsky, Ss Stepanyan, S Stepanyan, Be Stokes, P Stoler, S Strauch, R Suleiman, M Taiuti, S Taylor, Dj Tedeschi, U Thoma, 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, J Yun, L Zana, J Zhang, B Zhao, Z Zhao

Michael Williams

New measurements of the spin structure functions of the proton and deuteron g1p(x,Q2) and g1d(x,Q2) in the nucleon resonance region are compared with extrapolations of target-mass-corrected next-to-leading-order (NLO) QCD fits to higher energy data. Averaged over the entire resonance region (W<2 >GeV), the data and QCD fits are in good agreement in both magnitude and Q2 dependence for Q2>1.7 GeV2/c2. This “global” duality appears to result from cancellations among the prominent “local” resonance regions: in particular strong σ3/2 contributions in the Δ(1232) region appear to be compensated by strong σ1/2 contributions in the resonance region centered on 1.5 GeV. …

Search For Medium Modifications Of The Rho Meson, R Nasseripour, Mh Wood, C Djalali, Dp Weygand, C Tur, U Mosel, P Muehlich, G Adams, Mj Amaryan, P Ambrozewicz, 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, S Bouchigny, S Boiarinov, R Bradford, D Branford, Wj Briscoe, Wk Brooks, S Bueltmann, Vd Burkert, C Butuceanu, Jr Calarco, Sl Careccia, Ds Carman, B Carnahan, L Casey, S Chen, Pl Cole, P Collins, P Coltharp, 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, R Dickson, Ge Dodge, D Doughty, M Dugger, S Dytman, Op Dzyubak, H Egiyan, Ks Egiyan, L El Fassi, L Elouadrhiri, P Eugenio, G Fedotov, G Feldman, Rj Feuerbach, H Funsten, M Garcon, G Gavalian, Gp Gilfoyle, Kl Giovanetti, Fx Girod, Jt Goetz, Cio Gordon, Rw Gothe, Ka Griffioen, M Guidal, N Guler, L Guo, V Gyurjyan, C Hadjidakis, K Hafidi, H Hakobyan, Rs Hakobyan, C Hanretty, J Hardie, 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, 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, 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, S Niccolai, G Niculescu, I Niculescu, Bb Niczyporuk, Mr Niroula, Ra Niyazov, M Nozar, M Osipenko, Ai Ostrovidov, K Park, E Pasyuk, C Paterson, Sa Pereira, J Pierce, N Pivnyuk, D Pocanic, O Pogorelko, S Pozdniakov, Bm Preedom, Jw Price, Y Prok, D Protopopescu, Ba Raue, G Riccardi, G Ricco, M Ripani, Bg Ritchie, F Ronchetti, G Rosner, P Rossi, F Sabatie, J Salamanca, C Salgado, Jp Santoro, V Sapunenko, Ra Schumacher, Vs Serov, Yg Sharabian, D Sharov, Nv Shvedunov, 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, A Tkabladze, S Tkachenko, L Todor, M Ungaro, Mf Vineyard, Av Vlassov, Dp Watts, Lb Weinstein, M Williams, E Wolin, A Yegneswaran, L Zana, B Zhang, J Zhang, B Zhao, Zw Zhao

Michael Williams

The photoproduction of vector mesons on various nuclei has been studied using the CLAS detector at Jefferson Laboratory. The vector mesons, rho, omega, and varphi, are observed via their decay to e;{+}e;{-}, in order to reduce the effects of final-state interactions in the nucleus. Of particular interest are possible in-medium effects on the properties of the rho meson. The rho mass spectrum is extracted from the data on various nuclei, 2H, C, Fe, and Ti. We observe no significant mass shift and some broadening consistent with expected collisional broadening for the rho meson.

Cross Sections For The Gamma P -> K-*0 Sigma(+) Reaction At E-Gamma=1.7-3.0 Gev, I Hleiqawi, K Hicks, Ds Carman, T Mibe, G Niculescu, A Tkabladze, M Amarian, P Ambrozewicz, M Anghinolfi, G Asryan, H Avakian, H Bagdasaryan, N Baillie, Jp Ball, Na Baltzell, V Batourine, M Battaglieri, K Beard, I Bedlinskiy, M Bellis, N Benmouna, Bl Berman, As Biselli, S Bouchigny, S Boiarinov, R Bradford, D Branford, Wj Briscoe, Wk Brooks, S Bultmann, Vd Burkert, C Butuceanu, Jr Calarco, Sl Careccia, B Carnahan, S Chen, Pl Cole, P Collins, P Coltharp, D Crabb, H Crannell, V Crede, Jp Cummings, R De Masi, R De Vita, E De Sanctis, Pv Degtyarenko, L Dennis, A Deur, C Djalali, R Dickson, Ge Dodge, J Donnelly, D Doughty, M Dugger, S Dytman, Op Dzyubak, H Egiyan, Ks Egiyan, L Elouadrhiri, P Eugenio, G Fedotov, G Feldman, R Fersch, R Feuerbach, M Garcon, G Gavalian, Gp Gilfoyle, Kl Giovanetti, Fx Girod, Jt Goetz, A Gonenc, Rw Gothe, Ka Griffioen, M Guidal, N Guler, L Guo, V Gyurjyan, Rs Hakobyan, J Hardie, D Heddle, Fw Hersman, M Holtrop, Ce Hyde-Wright, Y Ilieva, Dg Ireland, Bs Ishkhanov, Mm Ito, D Jenkins, Hs Jo, K Joo, Hg Juengst, N Kalantarians, Jd Kellie, M Khandaker, K Kim, 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, K Lukashin, M Maccormick, S Mcaleer, B Mckinnon, J Mcnabb, Ba Mecking, Md Mestayer, Ca Meyer, K Mikhailov, R Minehart, M Mirazita, R Miskimen, V Mokeev, K Moriya, Sa Morrow, M Moteabbed, Gs Mutchler, E Munevar, P Nadel-Turonski, R Nasseripour, S Niccolai, I Niculescu, Bb Niczyporuk, Mr Niroula, Ra Niyazov, M Nozar, M Osipenko, Ai Ostrovidov, K Park, E Pasyuk, C Paterson, J Pierce, N Pivnyuk, O Pogorelko, S Pozdniakov, B Preedom, Jw Price, Y Prok, D Protopopescu, Ba Raue, G Riccardi, G Ricco, M Ripani, Bg Ritchie, F Ronchetti, G Rosner, P Rossi, F Sabatie, C Salgado, Jp Santoro, V Sapunenko, Ra Schumacher, Vs Serov, Yg Sharabian, Es Smith, Lc Smith, Di Sober, A Stavinsky, Ss Stepanyan, S Stepanyan, Be Stokes, P Stoler, Ii Strakovsky, S Strauch, M Taiuti, S Taylor, Dj Tedeschi, U Thoma, R Thompson, L Todor, S Tkachenko, C Tur, M Ungaro, Mf Vineyard, Av Vlassov, K Wang, Lb Weinstein, Dp Weygand, S Whisnant, M Williams, E Wolin, Mh Wood, A Yegneswaran, L Zana, J Zhang, B Zhao, Z Zhao

Michael Williams

Differential cross sections for the reaction γp→K*0Σ+ are presented in the photon energy range of 1.7 to 3.0 GeV. The K*0 was detected by its decay products, K+π-, in the Continuous Electron Beam Accelerator Facility's large acceptance spectrometer (CLAS) detector at the Thomas Jefferson National Accelerator Facility. These data are the first K*0 photoproduction cross sections ever published over a broad range of angles. Comparison with a theoretical model based on the vector and tensor K*-quark couplings shows good agreement with the data, except at forward angles, suggesting that the role of scalar κ meson exchange should be investigated.

First Measurement Of Beam-Recoil Observables C-X And C-Z In Hyperon Photoproduction, Rk Bradford, Ra Schumacher, G Adams, Mj Amaryan, P Ambrozewicz, E Anciant, M Anghinolfi, B Asavapibhop, G Asryan, G Audit, 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, N Bianchi, As Biselli, Be Bonner, S Bouchigny, S Boiarinov, D Branford, Wj Briscoe, Wk Brooks, S Bultmann, Vd Burkert, 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, R De Masi, E De Sanctis, R De Vita, Pv Degtyarenko, H Denizli, L Dennis, A Deur, Kv Dharmawardane, 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, L Elouadrhiri, A Empl, P Eugenio, R Fatemi, G Fedotov, G Feldman, Rj Feuerbach, Ta Forest, H Funsten, M Garcon, G Gavalian, Gp Gilfoyle, Kl Giovanetti, Fx Girod, Jt Goetz, 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, 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, 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, J Lachniet, Jm Laget, J Langheinrich, D Lawrence, Acs Lima, K Livingston, Hy Lu, K Lukashin, M Maccormick, Jj Manak, C Marchand, N Markov, S Mcaleer, B Mckinnon, Jwc Mcnabb, Ba Mecking, Md Mestayer, Ca Meyer, T Mibe, K Mikhailov, M Mirazita, R Miskimen, V Mokeev, K Moriya, Sa Morrow, M Moteabbed, V Muccifora, J Mueller, Gs Mutchler, P Nadel-Turonski, J Napolitano, R Nasseripour, N Natasha, 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, Bp Quinn, 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, Vs Serov, A Shafi, Yg Sharabian, J Shaw, Nv Shvedunov, S Simionatto, Av Skabelin, Es Smith, Lc Smith, Di Sober, D Sokhan, M Spraker, A Stavinsky, Ss Stepanyan, S Stepanyan, Be Stokes, P Stoler, Ii Strakovsky, S Strauch, M Taiuti, S Taylor, Dj Tedeschi, U Thoma, R Thompson, A Tkabladze, S Tkachenko, L Todor, C Tur, M Ungaro, Mf Vineyard, Av Vlassov, K Wang, Dp Watts, Lb Weinstein, H Weller, Dp Weygand, M Williams, E Wolin, Mh Wood, A Yegneswaran, J Yun, L Zana, J Zhang, B Zhao, Zw Zhao

Michael Williams

Spin transfer from circularly polarized real photons to recoiling hyperons has been measured for the reactions γ⃗+p→K++Λ⃗ and γ⃗+p→K++Σ⃗0. The data were obtained using the CEBAF Large Acceptance Spectrometer (CLAS) detector at the Jefferson Lab for center-of-mass energies W between 1.6 and 2.53 GeV, and for -0.85

Pi(0) Photoproduction On The Proton For Photon Energies From 0.675 To 2.875 Gev, M Dugger, Bg Ritchie, Jp Ball, P Collins, E Pasyuk, Ra Arndt, Wj Briscoe, Ii Strakovsky, Rl Workman, G Adams, M Amarian, P Ambrozewicz, E Anciant, M Anghinolfi, B Asavapibhop, G Asryan, G Audit, H Avakian, H Bagdasaryan, N Baillie, Na Baltzell, S Barrow, M Battaglieri, K Beard, I Bedlinskiy, M Bektasoglu, M Bellis, N Benmouna, Bl Berman, N Bianchi, As Biselli, Be Bonner, S Bouchigny, S Boiarinov, R Bradford, D Branford, Wk Brooks, S Bultmann, Vd Burkert, C Butuceanu, Jr Calarco, Sl Careccia, Ds Carman, B Carnahan, S Chen, Pl Cole, A Coleman, P Coltharp, D Cords, P Corvisiero, D Crabb, H Crannell, Jp Cummings, E De Sanctis, R De Vita, Pv Degtyarenko, H Denizli, L Dennis, A Deur, Kv Dharmawardane, Ks Dhuga, R Dickson, C Djalali, Ge Dodge, J Donnelly, D Doughty, P Dragovitsch, S Dytman, Op Dzyubak, H Egiyan, Ks Egiyan, L Elouadrhiri, A Empl, P Eugenio, R Fatemi, G Fedotov, G Feldman, Rj Feuerbach, J Ficenec, Ta Forest, H Funsten, M Garcon, G Gavalian, Gp Gilfoyle, Kl Giovanetti, Fx Girod, Jt Goetz, Rw Gothe, Ka Griffioen, M Guidal, M Guillo, N Guler, L Guo, V Gyurjyan, C Hadjidakis, Rs Hakobyan, J Hardie, D Heddle, Fw Hersman, K Hicks, I Hleiqawi, M Holtrop, J Hu, M Huertas, Ce Hyde-Wright, Y Ilieva, Dg Ireland, Bs Ishkhanov, 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, Av Klimenko, M Klusman, M Kossov, Z Krahn, Lh Kramer, V Kubarovsky, J Kuhn, Se Kuhn, V Kuznetsov, J Lachniet, Jm Laget, J Langheinrich, D Lawrence, T Lee, Acs Lima, K Livingston, K Lukashin, Jj Manak, C Marchand, Lc Maximon, 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, V Muccifora, J Mueller, Gs Mutchler, P Nadel-Turonski, J Napolitano, R Nasseripour, S Niccolai, G Niculescu, I Niculescu, Bb Niczyporuk, M Niroula, Ra Niyazov, M Nozar, Gv O'Rielly, M Osipenko, Ai Ostrovidov, K Park, C Paterson, Sa Philips, J Pierce, N Pivnyuk, D Pocanic, O Pogorelko, S Pozdniakov, Bm Preedom, Jw Price, Y Prok, D Protopopescu, Lm Qin, Ba Raue, G Riccardi, G Ricco, M Ripani, F Ronchetti, G Rosner, P Rossi, D Rowntree, Pd Rubin, F Sabatie, J Slamanca, C Salgado, Jp Santoro, V Sapunenko, Ra Schumacher, Vs Serov, A Shafi, Yg Sharabian, J Shaw, S Simionatto, Av Skabelin, Es Smith, Lc Smith, Di Sober, M Spraker, A Stavinsky, Ss Stepanyan, S Stepanyan, Be Stokes, P Stoler, S Strauch, M Taiuti, S Taylor, Dj Tedeschi, R Thompson, A Tkabladze, S Tkachenko, L Todor, C Tur, M Ungaro, Mf Vineyard, Av Vlassov, K Wang, Lb Weinstein, H Weller, Dp Weygand, M Williams, E Wolin, Mh Wood, A Yegneswaran, J Yun, L Zana, J Zhang

Michael Williams

Differential cross sections for the reaction $\gamma p \to p \pi^0$ have been measured with the CEBAF Large Acceptance Spectrometer (CLAS) and a tagged photon beam with energies from 0.675 to 2.875 GeV. The results reported here possess greater accuracy in the absolute normalization than previous measurements. They disagree with recent CB-ELSA measurements for the process at forward scattering angles. Agreement with the SAID and MAID fits is found below 1 GeV. The present set of cross sections has been incorporated into the SAID database, and exploratory fits have been extended to 3 GeV. Resonance couplings have been extracted and …

Measurement Of Coherent Phi-Meson Photoproduction From The Deuteron At Low Energies, T Mibe, H Gao, K Hicks, K Kramer, S Stepanyan, Dj Tedeschi, Mj Amaryan, P Ambrozewicz, M Anghinolfi, G Asryan, G Audit, H Avakian, H Bagdasaryan, N Baillie, Jp Ball, Na Baltzell, M Battaglieri, I Bedlinskiy, M Bellis, N Benmouna, Bl Berman, As Biselli, L Blaszczyk, S Bouchigny, S Boiarinov, R Bradford, D Branford, Wj Briscoe, Wk Brooks, S Bultmann, Vd Burkert, C Butuceanu, Jr Calarco, Sl Careccia, Ds Carman, S Chen, Pl Cole, P Collins, P Coltharp, D Crabb, H Crannell, V Crede, Jp Cummings, N Dashyan, R De Masi, R De Vita, E De Sanctis, Pv Degtyarenko, A Deur, Kv Dharmawardane, R Dickson, C Djalali, Ge Dodge, J Donnelly, D Doughty, M Dugger, Op Dzyubak, M Garcon, G Gavalian, Gp Gilfoyle, Kl Giovanetti, Fx Girod, Jt Goetz, A Gonenc, Cio Gordon, Rw Gothe, Ka Griffioen, M Guidal, N Guler, L Guo, V Gyurjyan, C Hadjidakis, K Hafidi, H Hakobyan, Rs Hakobyan, C Hanretty, J Hardie, Fw Hersman, 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, Av Klimenko, 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, J Li, K Livingston, Hy Lu, M Maccormick, C Marchand, N Markov, P Mattione, B Mckinnon, Ba Mecking, Jj Melone, Md Mestayer, Ca Meyer, K Mikhailov, R Minehart, M Mirazita, R Miskimen, V Mokeev, K Moriya, Sa Morrow, M Moteabbed, E Munevar, Gs Mutchler, P Nadel-Turonski, R Nasseripour, S Niccolai, G Niculescu, I Niculescu, Bb Niczyporuk, Mr Niroula, Ra Niyazov, M Nozar, M Osipenko, Ai Ostrovidov, K Park, E Pasyuk, 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, F Ronchetti, G Rosner, P Rossi, F Sabatie, J Salamanca, C Salgado, Jp Santoro, V Sapunenko, Ra Schumacher, Vs Serov, Yg Sharabian, D Sharov, Nv Shvedunov, Es Smith, Lc Smith, Di Sober, D Sokhan, A Stavinsky, Ss Stepanyan, Be Stokes, P Stoler, Ii Strakovsky, S Strauch, M Taiuti, U Thoma, A Tkabladze, S Tkachenko, L Todor, 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

The cross section and decay angular distributions for the coherent ϕ-meson photoproduction on the deuteron have been measured for the first time up to a squared four-momentum transfer t=(pγ-pϕ)2=-2 GeV2/c2, using the CLAS detector at the Thomas Jefferson National Accelerator Facility. The cross sections are compared with predictions from a rescattering model. In a framework of vector meson dominance, the data are consistent with the total ϕ-N cross section σϕN at about 10 mb. If vector meson dominance is violated, a larger σϕN is possible by introducing a larger t slope for the ϕN→ϕN process than that for the γN→ϕN …

Cascade Production In The Reactions Gamma P -> K+K+(X) And Gamma P -> K+K+Pi(-)(X), L Guo, Dp Weygand, M Battaglieri, R De Vita, V Kubarovsky, P Stoler, Mj Amaryan, P Ambrozewicz, M Anghinolfi, G Asryan, H Avakian, H Bagdasaryan, N Baillie, Jp Ball, Na Baltzell, V Batourine, M Battaglieri, I Bedlinskiy, M Bellis, N Benmouna, Bl Berman, As Biselli, L Blaszczyk, S Bouchigny, S Boiarinov, R Bradford, D Branford, Wj Briscoe, Wk Brooks, S Bultmann, Vd Burkert, C Butuceanu, Jr Calarco, Sl Careccia, Ds Carman, S Chen, Pl Cole, P Collins, P Coltharp, D Crabb, H Crannell, V Crede, Jp Cummings, N Dashyan, R De Masi, R De Vita, E De Sanctis, Pv Degtyarenko, A Deur, 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, G Feldman, H Funsten, M Garcon, G Gavalian, Gp Gilfoyle, Kl Giovanetti, Fx Girod, Jt Goetz, A Gonenc, Cio Gordon, Rw Gothe, Ka Griffioen, M Guidal, N Guler, V Gyurjyan, C Hadjidakis, K Hafidi, H Hakobyan, Rs Hakobyan, C Hanretty, J Hardie, Fw Hersman, K Hicks, I Hleiqawi, M Holtrop, Ce Hyde-Wright, Y Ilieva, Dg Ireland, Bs Ishkhanov, El Isupov, Mm Ito, D Jenkins, R Johnstone, 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, J Kuhn, Se Kuhn, Sv Kuleshov, J Lachniet, Jm Laget, J Langheinrich, D Lawrence, T Lee, J Li, K Livingston, Hy Lu, M Maccormick, N Markov, P Mattione, B Mckinnon, Ba Mecking, Jj Melone, Md Mestayer, Ca Meyer, T Mibe, K Mikhailov, R Minehart, M Mirazita, R Miskimen, V Mokeev, K Moriya, Sa Morrow, M Moteabbed, E Munevar, Gs Mutchler, P Nadel-Turonski, R Nasseripour, S Niccolai, G Niculescu, I Niculescu, Bb Niczyporuk, Mr Niroula, Ra Niyazov, M Nozar, M Osipenko, Ai Ostrovidov, K Park, E Pasyuk, 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, F Ronchetti, G Rosner, P Rossi, F Sabatie, J Salamanca, C Salgado, Jp Santoro, V Sapunenko, Ra Schumacher, Vs Serov, Yg Sharabian, D Sharov, Nv Shvedunov, Es Smith, Lc Smith, Di Sober, D Sokhan, A Stavinsky, Ss Stepanyan, S Stepanyan, Be Stokes, Ii Strakovsky, S Strauch, M Taiuti, Dj Tedeschi, U Thoma, A Tkabladze, S Tkachenko, L Todor, C Tur, 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

Photoproduction of the cascade resonances has been investigated in the reactions γp→K+K+(X) and γp→K+K+π-(X). The mass splitting of the ground state (Ξ-,Ξ0) doublet is measured to be 5.4±1.8 MeV/c2, consistent with existing measurements. The differential (total) cross sections for the Ξ- have been determined for photon beam energies from 2.75 to 3.85 (4.75) GeV and are consistent with a production mechanism of Y*→K+Ξ- through a t-channel process. The reaction γp→K+K+π-[Ξ0] has also been investigated to search of excited cascade resonances. No significant signal of excited cascade states other than the Ξ-(1530) is observed. The cross-section results of the Ξ-(1530) have …

Experimental Study Of Exclusive H-2(E,E ' P)N Reaction Mechanisms At High Q(2), Ks Egiyan, G Asryan, N Gevorgyan, Ka Griffioen, Jm Laget, Se Kuhn, G Adams, Mj Amaryan, P Ambrozewicz, M Anghinolfi, G Audit, H Avakian, H Bagdasaryan, N Baillie, Jp Ball, Na Baltzell, S Barrow, V Batourine, M Battaglieri, I Bedlinskiy, M Bektasoglu, M Bellis, N Benmouna, Bl Berman, As Biselli, L Blaszczyk, 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, S Chen, Pl Cole, P Collins, P Coltharp, D Cords, P Corvisiero, D Crabb, 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, R Dickson, C Djalali, Ge Dodge, J Donnelly, D Doughty, M Dugger, S Dytman, Op Dzyubak, H Egiyan, L El Fassi, L Elouadrhiri, P Eugenio, R Fatemi, G Fedotov, G Feldman, Rj Feuerbach, R Fersch, M Garcon, G Gavalian, Gp Gilfoyle, Kl Giovanetti, Fx Girod, Jt Goetz, A Gonenc, Cio Gordon, Rw Gothe, M Guidal, M Guillo, N Guler, L Guo, V Gyurjyan, C Hadjidakis, K Hafidi, H Hakobyan, Rs Hakobyan, C Hanretty, J Hardie, 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, 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, Sv Kuleshov, J Lachniet, J Langheinrich, D Lawrence, J Li, K Livingston, Hy Lu, M Maccormick, C Marchand, N Markov, P Mattione, S Mcaleer, 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, 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 Pereira, J Pierce, N Pivnyuk, D Pocanic, O Pogorelko, S Pozdniakov, Bm Preedom, Jw Price, Y Prok, D Protopopescu, Ba Raue, G Riccardi, G Ricco, M Ripani, Bg Ritchie, F Ronchetti, G Rosner, P Rossi, 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, S Strauch, M Taiuti, Dj Tedeschi, U Thoma, A Tkabladze, S Tkachenko, L Todor, 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

The reaction 2H(e,e′p)n has been studied with full kinematic coverage for photon virtuality 1.75

Separated Structure Functions For The Exclusive Electroproduction Of K+Lambda And K+Sigma(0) Final States, P Ambrozewicz, Ds Carman, Rj Feuerbach, Md Mestayer, Ba Raue, Ra Schumacher, A Tkabladze, Mj Amarian, 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, N Bianchi, As Biselli, Be Bonner, S Bouchigny, S Boiarinov, R Bradford, D Branford, Wj Briscoe, Wk Brooks, S Bultmann, Vd Burkert, C Butuceanu, Jr Calarco, Sl Careccia, C Cetina, S Chen, Pl Cole, P Collins, P Coltharp, D Cords, P Corvisiero, D Crabb, V Crede, Jp Cummings, N Dashyan, R De Masi, R De Vita, E De Sanctis, Pv Degtyarenko, L Dennis, A Deur, 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, L Elouadrhiri, A Empl, P Eugenio, L Farhi, R Fatemi, G Fedotov, G Feldman, Ta Forest, V Frolov, H Funsten, M Garcon, G Gavalian, Gp Gilfoyle, Kl Giovanetti, P Girard, Fx Girod, Jt Goetz, A Gonenc, Rw Gothe, Ka Griffioen, M Guidal, M Guillo, N Guler, L Guo, V Gyurjyan, K Hafidi, H Hakobyan, J Hardie, D Heddle, Fw Hersman, K Hicks, I Hleiqawi, M Holtrop, J Hu, Ce Hyde-Wright, 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, J Lachniet, Jm Laget, J Langheinrich, D Lawrence, K Livingston, Hy Lu, K Lukashin, M Maccormick, Jj Manak, N Markov, S Mcaleer, B Mckinnon, Jwc Mcnabb, Ba Mecking, Ca Meyer, T Mibe, K Mikhailov, R Minehart, M Mirazita, R Miskimen, V Mokeev, K Moriya, Sa Morrow, M Moteabbed, V Muccifora, 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, S Pozdniakov, Bm Preedom, Jw Price, Y Prok, D Protopopescu, Lm Qin, 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, D Sayre, Vs Serov, A Shafi, Yg Sharabian, Nv Shvedunov, S Simionatto, 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, S Taylor, Dj Tedeschi, R Thompson, S Tkachenko, C Tur, M Ungaro, Mf Vineyard, Av Vlassov, K Wang, Dp Watts, Lb Weinstein, Dp Weygand, M Williams, E Wolin, Mh Wood, A Yegneswaran, J Yun, L Zana, J Zhang, B Zhao, Zw Zhao

Michael Williams

The photoproduction of vector mesons on various nuclei has been studied using the CLAS detector at Jefferson Laboratory. The vector mesons, rho, omega, and varphi, are observed via their decay to e;{+}e;{-}, in order to reduce the effects of final-state interactions in the nucleus. Of particular interest are possible in-medium effects on the properties of the rho meson. The rho mass spectrum is extracted from the data on various nuclei, 2H, C, Fe, and Ti. We observe no significant mass shift and some broadening consistent with expected collisional broadening for the rho meson.