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Full-Text Articles in Physics
Numerical Determination Of Monopole Scaling Dimension In Parity-Invariant Three-Dimensional Noncompact Qed, Nikhil Karthik, Rajamani Narayanan
Numerical Determination Of Monopole Scaling Dimension In Parity-Invariant Three-Dimensional Noncompact Qed, Nikhil Karthik, Rajamani Narayanan
Department of Physics
We present a direct Monte Carlo determination of the scaling dimension of a topological defect operator in the infrared fixed point of a three-dimensional interacting quantum field theory. For this, we compute the free energy to introduce the background gauge field of the Q=1 monopole-antimonopole pair in three-dimensional noncompact QED with N=2, 4 and 12 flavors of massless two-component fermions, and study its asymptotic logarithmic dependence on the monopole-antimonopole separation. We estimate the scaling dimension in the N=12 case to be consistent with the large-N (free fermion) value. We find the deviations from this large-N value for N=2 and 4 …
Understanding The Importance Of Graduate Admissions Criteria According To Prospective Graduate Students, Deepa Chari, Geoff Potvin
Understanding The Importance Of Graduate Admissions Criteria According To Prospective Graduate Students, Deepa Chari, Geoff Potvin
Department of Physics
Understanding perceptions of graduate admissions from multiple stakeholders can cultivate an improved understanding about the process of graduate induction, the role that admissions plays in restricting diversity in physics, and contribute to more informed practices for all involved. Prior studies in graduate admissions have reported on how certain admission criteria weigh in the consideration of applicants primarily from faculty perspectives. Motivated by the concept of multivocal knowledge, in this article, we report on prospective students’ perspectives of the importance of the same admission criteria—a stakeholder group that is critical but underempowered in the admissions process. We identify a substantial agreement …
Qcd Evolution Of Superfast Quarks, Adam J. Freese, Wim Cosyn, Misak M. Sargsian
Qcd Evolution Of Superfast Quarks, Adam J. Freese, Wim Cosyn, Misak M. Sargsian
Department of Physics
Recent high-precision measurements of nuclear deep inelastic scattering at high x and moderate 6superfast region, in which the momentum fraction of the nucleon carried by its constituent quark is larger than the total fraction of the nucleon at rest, x>1. We derive the leading-order QCD evolution equation for such quarks with the goal of relating the moderate-Q2 data to the two earlier measurements of superfast quark distributions at large 601.1 region is somewhat in the middle of the neutrino-nuclear and muon-nuclear scattering data.
Automated, Efficient, And Accelerated Knowledge Modeling Of The Cognitive Neuroimaging Literature Using The Athena Toolkit, Michael C. Riedel, Taylor P. Salo, Jason Hays, Matthew D. Turner, Matthew T. Sutherland, Jessica A. Turner, Angela Laird
Automated, Efficient, And Accelerated Knowledge Modeling Of The Cognitive Neuroimaging Literature Using The Athena Toolkit, Michael C. Riedel, Taylor P. Salo, Jason Hays, Matthew D. Turner, Matthew T. Sutherland, Jessica A. Turner, Angela Laird
Department of Physics
Neuroimaging research is growing rapidly, providing expansive resources for synthesizing data. However, navigating these dense resources is complicated by the volume of research articles and variety of experimental designs implemented across studies. The advent of machine learning algorithms and text-mining techniques has advanced automated labeling of published articles in biomedical research to alleviate such obstacles. As of yet, a comprehensive examination of document features and classifier techniques for annotating neuroimaging articles has yet to be undertaken. Here, we evaluated which combination of corpus (abstract-only or full-article text), features (bag-of-words or Cognitive Atlas terms), and classifier (Bernoulli naïve Bayes, k-nearest …
Sexual Harassment Reported By Undergraduate Female Physicists, Lauren M. Aycock, Zahra Hazari, Eric Brewe, Kathryn B.H. Clancy, Theodore Hodapp, Renee Michelle Goertzen
Sexual Harassment Reported By Undergraduate Female Physicists, Lauren M. Aycock, Zahra Hazari, Eric Brewe, Kathryn B.H. Clancy, Theodore Hodapp, Renee Michelle Goertzen
Department of Physics
Sexual harassment occurs more frequently in male-dominated fields and physics is a more male-dominated field than most other science, technology, engineering, and mathematics (STEM) fields. Thus, it is important to examine the occurrence and impact of sexual harassment on women in physics. A survey of undergraduate women, who attended a conference for undergraduate women in physics, revealed that approximately three quarters (74.3%; 338/455) of survey respondents experienced at least one type of sexual harassment. This sample was recruited from a large fraction of undergraduate women in physics in the United States. We find that certain types of sexual harassment predict …
Multi-Frequency Blazar Micro-Variability As A Tool To Investigate Relativistic Jets, James R. Webb
Multi-Frequency Blazar Micro-Variability As A Tool To Investigate Relativistic Jets, James R. Webb
Department of Physics
For the past 12 years we have been studying optical micro-variability of a sample of 15 Blazars. We summarize the results of this study and draw some basic conclusions about the characteristics of micro-variability. The intermittency, the stochastic nature, and the similar profile shapes seen in micro-variations at different times and in different objects have led us to a possible model to explain the observed micro-variations. The model is based on a strong shock propagating down a relativistic jet and encountering turbulence which causes density or magnetic field enhancements. We use the theory of Kirk, Reiger, and Mastichiadis (1998) to …
Electron–Deuteron Dis With Spectator Tagging At Eic: Development Of Theoretical Framework, W. Cosyn, V. Guzey, Misak M. Sargsian, M. Strikman, C. Weiss
Electron–Deuteron Dis With Spectator Tagging At Eic: Development Of Theoretical Framework, W. Cosyn, V. Guzey, Misak M. Sargsian, M. Strikman, C. Weiss
Department of Physics
An Electron–Ion Collider (EIC) would enable next-generation measurements of deep-inelastic scattering (DIS) on the deuteron with detection of a forward-moving nucleon (p, n) and measurement of its recoil momentum (“spectator tagging”). Such experiments offer full control of the nuclear configuration during the high-energy process and can be used for precision studies of the neutron’s partonic structure and its spin dependence, nuclear modifications of partonic structure, and nuclear shadowing at small x. We review the theoretical description of spectator tagging at EIC energies (light–front nuclear structure, on-shell extrapolation in the recoil nucleon momentum, final-state interactions, diffractive effects …
Tagged Spectator Deep-Inelastic Scattering Off The Deuteron As A Tool To Study Neutron Structure, Wim Cosyn, Misak M. Sargsian
Tagged Spectator Deep-Inelastic Scattering Off The Deuteron As A Tool To Study Neutron Structure, Wim Cosyn, Misak M. Sargsian
Department of Physics
We give an overview of a model to describe deep-inelastic scattering (DIS) off the deuteron with a spectator proton, based on the virtual nucleon approximation (VNA). The model accounts for the final-state interactions (FSI) of the DIS debris with the spectator proton. Values of the rescattering cross section are obtained by fits to high-momentum spectator data. By using the so-called “pole extrapolation” method, free neutron structure functions can be obtained by extrapolating low-momentum spectator proton data to the on-shell neutron pole. We apply this method to the BONuS data set and find a surprising Bjorken x dependence, indicating a possible …
Electroexcitation Of The Δ+(1232) At Low Momentum Transfer, Werner U. Boeglin
Electroexcitation Of The Δ+(1232) At Low Momentum Transfer, Werner U. Boeglin
Department of Physics
No abstract provided.
First Measurement Of The Helicity Asymmetry Ein Ηphotoproduction On The Proton, R.A. Badui, Lei Guo, W. Phelps, D. Schott
First Measurement Of The Helicity Asymmetry Ein Ηphotoproduction On The Proton, R.A. Badui, Lei Guo, W. Phelps, D. Schott
Department of Physics
No abstract provided.
Pseudorapidity Distribution Of Charged Hadrons In Proton-Proton Collisions At Root S=13tev, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Pseudorapidity Distribution Of Charged Hadrons In Proton-Proton Collisions At Root S=13tev, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Department of Physics
The pseudorapidity distribution of charged hadrons in pp collisions at √s=13TeVis measured using a data sample obtained with the CMS detector, operated at zero magnetic field, at the CERN LHC. The yield of primary charged long-lived hadrons produced in inelastic pp collisions is determined in the central region of the CMS pixel detector (|η| <2) using both hit pairs and reconstructed tracks. For central pseudorapidities (|η| <0.5), the charged-hadron multiplicity density is dNch/dη||η|<0.5=5.49 ±0.01 (stat)±0.17 (syst), a value obtained by combining the two methods. The result is compared to predictions from Monte Carlo event generators and to similar measurements made at lower collision energies.
Solvothermal Synthesis, Structure And Optical Property Of Nanosized Cosb3 Skutterudite, Latha Kumari, Wenzhi Li, Jianyu Huang, Paula P. Provencio
Solvothermal Synthesis, Structure And Optical Property Of Nanosized Cosb3 Skutterudite, Latha Kumari, Wenzhi Li, Jianyu Huang, Paula P. Provencio
Department of Physics
Binary skutterudite CoSb3 nanoparticles were synthesized by solvothermal method. The nanostructuring of CoSb3 material was achieved by the inclusion of various kinds of additives. X-ray diffraction examination indicated the formation of the cubic phase of CoSb3. Structural analysis by transmission electron microscopy analysis further confirmed the formation of crystalline CoSb3 nanoparticles with high purity. With the assistance of additives, CoSb3 nanoparticles with size as small as 10 nm were obtained. The effect of the nanostructure of CoSb3 on the UV–visible absorption and luminescence was studied. The nanosized CoSb3 skutterudite may find application …
Preface To Special Topic: Amyloid Aggregation: Characterization, Function And Molecular Mechanisms, Bernard S. Gerstman, Yifat Miller
Preface To Special Topic: Amyloid Aggregation: Characterization, Function And Molecular Mechanisms, Bernard S. Gerstman, Yifat Miller
Department of Physics
No abstract provided.
Search For Diphoton Resonances In The Mass Range From 150 To 850gev In Pp Collisions At √S=8 Tev, Cms Collaboration, Cern Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Search For Diphoton Resonances In The Mass Range From 150 To 850gev In Pp Collisions At √S=8 Tev, Cms Collaboration, Cern Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Department of Physics
Results are presented of a search for heavy particles decaying into two photons. The analysis is based on a 19.7 fb−1sample of proton–proton collisions at √s=8 TeVcollected with the CMS detector at the CERN LHC. The diphoton mass spectrum from 150 to 850GeVis used to search for an excess of events over the background. The search is extended to new resonances with natural widths of up to 10% of the mass value. No evidence for new particle production is observed and limits at 95% confidence level on the production cross section times branching fraction to diphotons are determined. These limits …
Study Of W Boson Production In Ppb Collisions At √Snn=5.02tev, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Study Of W Boson Production In Ppb Collisions At √Snn=5.02tev, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Department of Physics
The first study of W boson production in pPb collisions is presented, for bosons decaying to a muon or electron, and a neutrino. The measurements are based on a data sample corresponding to an integrated luminosity of 34.6nb−1at a nucleon–nucleon centre-of-mass energy of √sNN=5.02TeV, collected by the CMS experiment. The W boson differential cross sections, lepton charge asymmetry, and forward–backward asymmetries are measured for leptons of transverse momentum exceeding 25GeV/c, and as a function of the lepton pseudorapidity in the |ηlab| <2.4range. Deviations from the expectations based on currently available parton distribution functions are observed, showing the need for including W boson data in nuclear parton distribution global fits.
Angular Coefficients Of Z Bosons Produced In Pp Collisions At √S=8tevand Decaying To Μ+Μ−As A Function Of Transverse Momentum And Rapidity, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Angular Coefficients Of Z Bosons Produced In Pp Collisions At √S=8tevand Decaying To Μ+Μ−As A Function Of Transverse Momentum And Rapidity, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Department of Physics
Measurements of the five most significant angular coefficients, A0through A4, for Z bosons produced in pp collisions at √s=8TeVand decaying to μ+μ−are presented as a function of the transverse momentum and rapidity of the Z boson. The integrated luminosity of the dataset collected with the CMS detector at the LHC corresponds to 19.7 fb−1. These measurements provide comprehensive information about the Z boson production mechanisms, and are compared to the QCD predictions at leading order, next-to-leading order, and next-to-next-to-leading order in perturbation theory.
First Measurement Of The Polarization Observable E In The P→(Γ→,Π+)N Reaction Up To 2.25 Gev, Clas Collaboration, R.A. Badui, Lei Guo
First Measurement Of The Polarization Observable E In The P→(Γ→,Π+)N Reaction Up To 2.25 Gev, Clas Collaboration, R.A. Badui, Lei Guo
Department of Physics
First results from the longitudinally polarized frozen-spin target (FROST) program are reported. The double-polarization observable E, for the reaction γ p→π+n, has been measured using a circularly polarized tagged-photon beam, with energies from 0.35 to 2.37GeV. The final-state pions were detected with the CEBAF Large Acceptance Spectrometer in Hall B at the Thomas Jefferson National Accelerator Facility. These polarization data agree fairly well with previous partial-wave analyses at low photon energies. Over much of the covered energy range, however, significant deviations are observed, particularly in the high-energy region where high-Lmultipoles contribute. The data have been included in new multipole analyses …
Search For Resonant Pair Production Of Higgs Bosons Decaying To Two Bottom Quark–Antiquark Pairs In Proton–Proton Collisions At 8tev, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Search For Resonant Pair Production Of Higgs Bosons Decaying To Two Bottom Quark–Antiquark Pairs In Proton–Proton Collisions At 8tev, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Department of Physics
A model-independent search for a narrow resonance produced in proton–proton collisions at √s=8TeVand decaying to a pair of 125GeV Higgs bosons that in turn each decays into a bottom quark–antiquark pair is performed by the CMS experiment at the LHC. The analyzed data correspond to an integrated luminosity of 17.9fb−1. No evidence for a signal is observed. Upper limits at a 95% confidence level on the production cross section for such a resonance, in the mass range from 270 to 1100GeV, are reported. Using these results, a radion with decay constant of 1TeV and mass from 300 to 1100GeV, and …
Measurement Of The Z Boson Differential Cross Section In Transverse Momentum And Rapidity In Proton–Proton Collisions At 8tev, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Measurement Of The Z Boson Differential Cross Section In Transverse Momentum And Rapidity In Proton–Proton Collisions At 8tev, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Department of Physics
We present a measurement of the Z boson differential cross section in rapidity and transverse momentum using a data sample of pp collision events at a centre-of-mass energy √s=8TeV, corresponding to an integrated luminosity of 19.7fb−1. The Z boson is identified via its decay to a pair of muons. The measurement provides a precision test of quantum chromodynamics over a large region of phase space. In addition, due to the small experimental uncertainties in the measurement the data has the potential to constrain the gluon parton distribution function in the kinematic regime important for Higgs boson production via gluon fusion. …
Search For Lepton-Flavour-Violating Decays Of The Higgs Boson, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Search For Lepton-Flavour-Violating Decays Of The Higgs Boson, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Department of Physics
The first direct search for lepton-flavour-violating decays of the recently discovered Higgs boson (H) is described. The search is performed in the H →μτeand H →μτhchannels, where τeand τhare tau leptons reconstructed in the electronic and hadronic decay channels, respectively. The data sample used in this search was collected in pp collisions at a centre-of-mass energy of √s=8TeVwith the CMS experiment at the CERN LHC and corresponds to an integrated luminosity of 19.7fb−1. The sensitivity of the search is an order of magnitude better than the existing indirect limits. A slight excess of signal events with a significance of 2.4 …
Measurements Of The ϒ(1s), ϒ(2s), And ϒ(3s)Differential Cross Sections In Pp Collisions At √S=7 Tev, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Measurements Of The ϒ(1s), ϒ(2s), And ϒ(3s)Differential Cross Sections In Pp Collisions At √S=7 Tev, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Department of Physics
Differential cross sections as a function of transverse momentum pTare presented for the production of ϒ(nS)(n=1, 2, 3) states decaying into a pair of muons. Data corresponding to an integrated luminosity of 4.9fb−1in pp collisions at √s=7 TeVwere collected with the CMS detector at the LHC. The analysis selects events with dimuon rapidity |y| <1.2and dimuon transverse momentum in the range 10
Search For Narrow High-Mass Resonances In Proton–Proton Collisions At √S=8tevdecaying To A Z And A Higgs Boson, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Search For Narrow High-Mass Resonances In Proton–Proton Collisions At √S=8tevdecaying To A Z And A Higgs Boson, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Department of Physics
A search for a narrow, high-mass resonance decaying into Z and Higgs (H) bosons is presented. The final state studied consists of a merged jet pair and a τpair resulting from the decays of Z and Hbosons, respectively. The analysis is based on a data sample of proton–proton collisions at a center-of-mass energy of 8TeV, collected with the CMS experiment in 2012, and corresponding to an integrated luminosity of 19.7fb−1. In the resonance mass range of interest, which extends from 0.8 to 2.5TeV, the Z and H bosons are produced with large momenta, which implies that the final products of …
Search For A Pseudoscalar Boson Decaying Into A Z Boson And The 125 Gev Higgs Boson In View The Mathml Sourceℓ+ℓ−Bb‾ Final States, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Search For A Pseudoscalar Boson Decaying Into A Z Boson And The 125 Gev Higgs Boson In View The Mathml Sourceℓ+ℓ−Bb‾ Final States, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Department of Physics
Results are reported on a search for decays of a pseudoscalar A boson into a Z boson and a light scalar h boson, where the Z boson decays into a pair of oppositely-charged electrons or muons, and the h boson decays into bb. The search is based on data from proton–proton collisions at a center-of-mass energy √s=8TeVcollected with the CMS detector, corresponding to an integrated luminosity of 19.7fb−1. The h boson is assumed to be the standard model-like Higgs boson with a mass of 125GeV. With no evidence for signal, upper limits are obtained on the product of the production …
Search For Heavy Majorana Neutrinos In Μ±Μ±+Jets Events Inproton–Proton Collisions At√S=8tev, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Search For Heavy Majorana Neutrinos In Μ±Μ±+Jets Events Inproton–Proton Collisions At√S=8tev, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Department of Physics
A search is performed for heavy Majorana neutrinos (N) using an event signature defined by two muons of the same charge and two jets (μ±μ±jj). The data correspond to an integrated luminosity of 19.7fb−1of proton–proton collisions at a center-of-mass energy of 8TeV, collected with the CMS detector at the CERN LHC. No excess of events is observed beyond the expected standard model background and upper limits are set on |VμN|2as a function of Majorana neutrino mass mNfor masses in the range of 40–500GeV, where VμNis the mixing element of the heavy neutrino with the standard model muon neutrino. The limits …
Self-Assembly Dynamics For The Transition Of A Globular Aggregate To A Fibril Network Of Lysozyme Proteins Via A Coarse-Grained Monte Carlo Simulation, R. B. Pandey, B. L. Farmer, Bernard S. Gerstman
Self-Assembly Dynamics For The Transition Of A Globular Aggregate To A Fibril Network Of Lysozyme Proteins Via A Coarse-Grained Monte Carlo Simulation, R. B. Pandey, B. L. Farmer, Bernard S. Gerstman
Department of Physics
The self-organizing dynamics of lysozymes (an amyloid protein with 148 residues) with different numbers of protein chains, Nc = 1,5,10, and 15 (concentration 0.004 – 0.063) is studied by a coarse-grained Monte Carlo simulation with knowledge-based residue-residue interactions. The dynamics of an isolated lysozyme (Nc = 1) is ultra-slow (quasi-static) at low temperatures and becomes diffusive asymptotically on raising the temperature. In contrast, the presence of interacting proteins leads to concentration induced protein diffusion at low temperatures and concentration-tempering sub-diffusion at high temperatures. Variation of the radius of gyration of the protein with temperature shows a systematic transition from a …
Measurement Of The Cross Section Ratio Σttbb/Σttjjin Ppcollisions At√S=8tev, Cms Collaboration, Cern Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Measurement Of The Cross Section Ratio Σttbb/Σttjjin Ppcollisions At√S=8tev, Cms Collaboration, Cern Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Department of Physics
The first measurement of the cross section ratio σttbb/σttjjis presented using a data sample corresponding to an integrated luminosity of 19.6fb−1collected in pp collisions at √s=8TeVwith the CMS detector at the LHC. Events with two leptons (eor μ) and four reconstructed jets, including two identified as b quark jets, in the final state are selected. The ratio is determined for a minimum jet transverse momentum pTof both 20 and 40GeV/c. The measured ratio is 0.022 ±0.003 (stat) ±0.005 (syst)for pT>20GeV/c. The absolute cross sections σttbband σttjjare also measured. The measured ratio for pT>40GeV/cis compatible with a theoretical quantum …
Search For Quark Contact Interactions And Extra Spatial Dimensions Using Dijet Angular Distributions In Proton–Proton Collisions At √S=8tev, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Search For Quark Contact Interactions And Extra Spatial Dimensions Using Dijet Angular Distributions In Proton–Proton Collisions At √S=8tev, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Department of Physics
A search is presented for quark contact interactions and extra spatial dimensions in proton–proton collisions at √s=8TeVusing dijet angular distributions. The search is based on a data set corresponding to an integrated luminosity of 19.7fb−1collected by the CMS detector at the CERN LHC. Dijet angular distributions are found to be in agreement with the perturbative QCD predictions that include electroweak corrections. Limits on the contact interaction scale from a variety of models at next-to-leading order in QCD corrections are obtained. A benchmark model in which only left-handed quarks participate is excluded up to a scale of 9.0 (11.7)TeV for destructive …
Search For Pair-Produced Resonances Decaying To Jet Pairs In Proton–Proton Collisions At √S=8tev, Cms Collaboration, Cern Switzerland, Samantha Hewamanage, Stephan Linn, Pete Markowitz, German Martinez, Jorge Luis Rodriguez
Search For Pair-Produced Resonances Decaying To Jet Pairs In Proton–Proton Collisions At √S=8tev, Cms Collaboration, Cern Switzerland, Samantha Hewamanage, Stephan Linn, Pete Markowitz, German Martinez, Jorge Luis Rodriguez
Department of Physics
Results are reported of a general search for pair production of heavy resonances decaying to pairs of hadronic jets in events with at least four jets. The study is based on up to 19.4fb−1of integrated luminosity from proton–proton collisions at a center-of-mass energy of 8TeV, recorded with the CMS detector at the LHC. Limits are determined on the production of scalar top quarks (top squarks) in the framework of R-parity violating supersymmetry and on the production of color-octet vector bosons (colorons). First limits at the LHC are placed on top squark production for two scenarios. The first assumes decay to …
Search For A Standard Model-Like Higgs Boson In The Μ+Μ−And E+E−Decay Channels At The Lhc, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Search For A Standard Model-Like Higgs Boson In The Μ+Μ−And E+E−Decay Channels At The Lhc, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Department of Physics
A search is presented for a standard model-like Higgs boson decaying to the μ+μ−or e+e−final states based on proton–proton collisions recorded by the CMS experiment at the CERN LHC. The data correspond to integrated luminosities of 5.0fb−1at a centre-of-mass energy of 7TeV and 19.7fb−1at 8TeV for the μ+μ−search, and of 19.7fb−1at 8TeV for the e+e−search. Upper limits on the production cross section times branching fraction at the 95% confidence level are reported for Higgs boson masses in the range from 120 to 150GeV. For a Higgs boson with a mass of 125GeV decaying to μ+μ−, the observed (expected) upper limit …
Search For Stealth Supersymmetry In Events With Jets, Either Photons Or Leptons, And Low Missing Transverse Momentum In Pp Collisions At 8tev, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Search For Stealth Supersymmetry In Events With Jets, Either Photons Or Leptons, And Low Missing Transverse Momentum In Pp Collisions At 8tev, Cms Collaboration, Cern, Switzerland, Samantha Hewamanage, Stephan Linn, Pete E. Markowitz, German Martinez, Jorge Luis Rodriguez
Department of Physics
The results of a search for new physics in final states with jets, either photons or leptons, and low missing transverse momentum are reported. The study is based on a sample of proton–proton collisions collected at a center-of-mass energy √s=8TeVwith the CMS detector in 2012. The integrated luminosity of the sample is 19.7fb−1. Many models of new physics predict the production of events with jets, electroweak gauge bosons, and little or no missing transverse momentum. Examples include stealth models of supersymmetry (SUSY), which predict a hidden sector at the electroweak energy scale in which SUSY is approximately conserved. The data …