Publications
1150 results found
Chatrchyan S, Khachatryan V, Sirunyan AM, et al., 2011, Search for supersymmetry in events with a lepton, a photon, and large missing transverse energy in pp collisions at √<i>s</i>=7 TeV, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479
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- Citations: 13
Chatrchyan S, Khachatryan V, Sirunyan AM, et al., 2011, Search for physics beyond the standard model in opposite-sign dilepton events in pp collisions at √<i>s</i>=7 TeV, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479
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- Citations: 14
Chatrchyan S, Khachatryan V, Sirunyan AM, et al., 2011, Search for new physics with same-sign isolated dilepton events with jets and missing transverse energy at the LHC, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479
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- Citations: 60
Chatrchyan S, Khachatryan V, Sirunyan AM, et al., 2011, Search for supersymmetry in pp collisions at √7 TeV in events with two photons and missing transverse energy., Phys Rev Lett, Vol: 106
A search for supersymmetry in the context of general gauge-mediated breaking with the lightest neutralino as the next-to-lightest supersymmetric particle and the gravitino as the lightest is presented. The data sample corresponds to an integrated luminosity of 36 pb(-1) recorded by the CMS experiment at the LHC. The search is performed by using events containing two or more isolated photons, at least one hadronic jet, and significant missing transverse energy. No excess of events at high missing transverse energy is observed. Upper limits on the signal cross section for general gauge-mediated supersymmetry between 0.3 and 1.1 pb at the 95% confidence level are determined for a range of squark, gluino, and neutralino masses, excluding supersymmetry parameter space that was inaccessible to previous experiments.
Chatrchyan S, Khachatryan V, Sirunyan AM, et al., 2011, Study of Z Boson Production in PbPb Collisions at √S(NN)=2.76 TeV., Phys Rev Lett, Vol: 106
A search for Z bosons in the μ(+)μ(-) decay channel has been performed in PbPb collisions at √S(NN)=2.76 TeV with the CMS detector at the LHC, in a 7.2 μb(-1) data sample. The number of opposite-sign muon pairs observed in the 60-120 GeV/c(2) invariant mass range is 39, corresponding to a yield per unit of rapidity (y) and per minimum bias event of [33.8±5.5(stat)±4.4(syst)]×10(-8), in the |y|<2.0 range. Rapidity, transverse momentum, and centrality dependencies are also measured. The results agree with next-to-leading order QCD calculations, scaled by the number of incoherent nucleon-nucleon collisions.
Chatrchyan S, Khachatryan V, Sirunyan AM, et al., 2011, Search for Supersymmetry in <i>pp</i> Collisions at √<i>s</i>=7 TeV in Events with Two Photons and Missing Transverse Energy, PHYSICAL REVIEW LETTERS, Vol: 106, ISSN: 0031-9007
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- Citations: 44
Chatrchyan S, Khachatryan V, Sirunyan AM, et al., 2011, Study of <i>Z</i> Boson Production in PbPb Collisions at √<i>s<sub>NN</sub></i>=2.76 TeV, PHYSICAL REVIEW LETTERS, Vol: 106, ISSN: 0031-9007
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- Citations: 80
Khachatryan V, Sirunyan AM, Tumasyan A, et al., 2011, Measurement of dijet angular distributions and search for quark compositeness in pp collisions at √s = 7 TeV., Phys Rev Lett, Vol: 106
Dijet angular distributions are measured over a wide range of dijet invariant masses in pp collisions at √s = 7 TeV, at the CERN LHC. The event sample, recorded with the CMS detector, corresponds to an integrated luminosity of 36 pb⁻¹. The data are found to be in good agreement with the predictions of perturbative QCD, and yield no evidence of quark compositeness. With a modified frequentist approach, a lower limit on the contact interaction scale for left-handed quarks of Λ⁺ = 5.6 TeV (Λ⁻ = 6.7 TeV) for destructive (constructive) interference is obtained at the 95% confidence level.
Khachatryan V, Sirunyan AM, Tumasyan A, et al., 2011, Measurement of Dijet Angular Distributions and Search for Quark Compositeness in <i>pp</i> Collisions at √<i>s</i>=7 TeV, PHYSICAL REVIEW LETTERS, Vol: 106, ISSN: 0031-9007
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- Citations: 58
Khachatryan V, Sirunyan AM, Tumasyan A, et al., 2011, Search for Pair Production of Second-Generation Scalar Leptoquarks in pp Collisions at root s=7 TeV, Physical Review Letters, Vol: 106, ISSN: 1079-7114
A search for pair production of second-generation scalar leptoquarks in the final state with two muonsand two jets is performed using proton-proton collision data at ffiffis p ¼ 7 TeV collected by the CMSdetector at the LHC. The data sample used corresponds to an integrated luminosity of 34 pb 1. Thenumber of observed events is in good agreement with the predictions from the standard model processes.An upper limit is set on the second-generation leptoquark cross section times 2 as a function of theleptoquark mass, and leptoquarks with masses below 394 GeV are excluded at a 95% confidence level for ¼ 1, where is the leptoquark branching fraction into a muon and a quark. These limits are the moststringent to date
Khachatryan V, Sirunyan AM, Tumasyan A, et al., 2011, Search for Pair Production of First-Generation Scalar Leptoquarks in <i>pp</i> Collisions at √<i>s</i>=7 TeV, PHYSICAL REVIEW LETTERS, Vol: 106, ISSN: 0031-9007
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- Citations: 24
Chatrchyan S, Khachatryan V, Sirunyan AM, et al., 2011, Measurement of W<SUP>+</SUP>W<SUP>-</SUP> production and search for the Higgs boson in pp collisions at √<i>s</i>=7 TeV, PHYSICS LETTERS B, Vol: 699, Pages: 25-47, ISSN: 0370-2693
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- Citations: 94
Khachatryan V, Sirunyan AM, Tumasyan A, et al., 2011, First measurement of hadronic event shapes in pp collisions at √s=7 TeV, PHYSICS LETTERS B, Vol: 699, Pages: 48-67, ISSN: 0370-2693
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- Citations: 52
Khachatryan V, Sirunyan AM, Tumasyan A, et al., 2011, Measurement of Bose-Einstein correlations in pp collisions at √s=0.9 and 7 TeV, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479
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- Citations: 17
Khachatryan V, Sirunyan AM, Tumasyan A, et al., 2011, Strange particle production in pp collisions at √<i>s</i>=0.9 and 7 TeV, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479
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- Citations: 135
Chatrchyan S, Khachatryan V, Sirunyan AM, et al., 2011, Search for large extra dimensions in the diphoton final state at the Large Hadron Collider, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479
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- Citations: 18
Chatrchyan S, Khachatryan V, Sirunyan AM, et al., 2011, Search for resonances in the dilepton mass distribution in pp collisions at √<i>s</i>=7 TeV, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479
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- Citations: 41
Khachatryan V, Sirunyan AM, Tumasyan A, et al., 2011, Search for supersymmetry in pp collisions at 7 TeV in events with jets and missing transverse energy, PHYSICS LETTERS B, Vol: 698, Pages: 196-218, ISSN: 0370-2693
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- Citations: 181
Chatrchyan S, Khachatryan V, Sirunyan AM, et al., 2011, Measurement of the lepton charge asymmetry in inclusive W production in pp collisions at √<i>s</i>=7TeV, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479
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- Citations: 45
Khachatryan V, Sirunyan AM, Tumasyan A, et al., 2011, Search for a heavy gauge boson W′ in the final state with an electron and large missing transverse energy in <i>pp</i> collisions at √<i>s</i>=7 TeV, PHYSICS LETTERS B, Vol: 698, Pages: 21-39, ISSN: 0370-2693
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- Citations: 30
Khachatryan V, Sirunyan AM, Tumasyan A, et al., 2011, Dijet Azimuthal Decorrelations in <i>pp</i> Collisions at √s=7 TeV, PHYSICAL REVIEW LETTERS, Vol: 106, ISSN: 0031-9007
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- Citations: 53
Khachatryan V, Sirunyan AM, Tumasyan A, et al., 2011, Search for microscopic black hole signatures at the Large Hadron Collider, PHYSICS LETTERS B, Vol: 697, Pages: 434-453, ISSN: 0370-2693
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- Citations: 74
Khachatryan V, Sirunyan AM, Tumasyan A, et al., 2011, Measurement of the <i>B</i><SUP>+</SUP> Production Cross Section in <i>pp</i> Collisions at √s=7 TeV, PHYSICAL REVIEW LETTERS, Vol: 106, ISSN: 0031-9007
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- Citations: 82
Khachatryan V, Sirunyan AM, Tumasyan A, et al., 2011, Measurement of B(B)over-bar angular correlations based on secondary vertex reconstruction at √<i>s</i>=7 TeV, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479
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- Citations: 21
Khachatryan V, Sirunyan AM, Tumasyan A, et al., 2011, Inclusive b-hadron production cross section with muons in pp collisions at √<i>s</i>=7 TeV, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479
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- Citations: 15
Khachatryan V, Sirunyan AM, Tumasyan A, et al., 2011, Search for heavy stable charged particles in pp collisions at √<i>s</i>=7 TeV, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479
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- Citations: 24
Aad G, Abbott B, Abdallah J, et al., 2011, Measurement of the top quark-pair production cross section with ATLAS in pp collisions at $\sqrt{s}=7$ TeV, The European Physical Journal C, Vol: 71, ISSN: 1434-6044
Khachatryan V, Sirunyan AM, Tumasyan A, et al., 2011, Prompt and non-prompt J/ψ production in pp collisions at √<i>s</i>=7 TeV, EUROPEAN PHYSICAL JOURNAL C, Vol: 71, ISSN: 1434-6044
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- Citations: 154
Aad G, Abbott B, Abdallah J, et al., 2011, Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √<i>s</i>=7 TeV, EUROPEAN PHYSICAL JOURNAL C, Vol: 71, ISSN: 1434-6044
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- Citations: 183
Khachatryan V, Sirunyan AM, Tumasyan A, et al., 2011, Measurement of the Isolated Prompt Photon Production Cross Section in <i>pp</i> Collisions at √<i>s</i>=7 TeV, PHYSICAL REVIEW LETTERS, Vol: 106, ISSN: 0031-9007
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- Citations: 71
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