J. Swanson

Search for physics beyond the standard model in final states with a lepton and missing transverse energy in proton-proton collisions at s=8 TeV

V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam et autres

A search for new physics in proton-proton collisions having final states with an electron or muon and missing transverse energy is presented. The analysis uses data collected in 2012 with the CMS detector, at an LHC center-of-mass energy of 8 TeV, and …

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Observation of a peaking structure in the J / ψ ϕ mass spectrum from B ± → J / ψ ϕ K ± decays

S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, A. Tumasyan et autres

A peaking structure in the J/ψϕ mass spectrum near threshold is observed in B±→J/ψϕK± decays, produced in pp collisions at s=7 TeV collected with the CMS detector at the LHC. The data sample, selected on the basis of the dimuon decay mode …

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Rapidity distributions in exclusive Z+jet and γ+jet events in pp collisions at s=7 TeV

S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, A. Tumasyan et autres

Rapidity distributions are presented for events containing either a $Z$ boson or a photon with a single jet in proton-proton collisions produced at the CERN LHC. The data, collected with the CMS detector at $\sqrt{s}=7\text{ }\text{ }\mathrm{TeV}$, correspond to an integrated luminosity …

am, at, be, cn (code pays fourni par la source)

Measurement of the elliptic anisotropy of charged particles produced in PbPb collisions at s N N = 2.76 TeV

S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, A. Tumasyan et autres

The anisotropy of the azimuthal distributions of charged particles produced in $\sqrt{{s}_{NN}}=2.76$ TeV PbPb collisions is studied with the CMS experiment at the LHC. The elliptic anisotropy parameter, ${v}_{2}$, defined as the second coefficient in a Fourier expansion of the particle invariant …

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Search for supersymmetry in final states with missing transverse energy and 0, 1, 2, or ≥3 b-quark jets in 7 TeV pp collisions using the variable α T

S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, A. Tumasyan et autres

Abstract A search for supersymmetry in final states with jets and missing transverse energy is performed in pp collisions at a centre-of-mass energy of $ \sqrt{s}=7 $ TeV. The data sample corresponds to an integrated luminosity of 4.98 fb−1 collected by the …

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Measurement of the top-quark mass in $\mathrm{t}\overline{\mathrm{t}}$ events with dilepton final states in pp collisions at $\sqrt{s}=7\ \mbox{TeV}$

S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, A. Tumasyan et autres

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Measurement of the tt¯ production cross section in pp collisions at s=7 TeV in dilepton final states containing a τ

S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, A. Tumasyan et autres

The top quark pair production cross section is measured in dilepton events with one electron or muon, and one hadronically decaying $\ensuremath{\tau}$ lepton from the decay $t\overline{t}\ensuremath{\rightarrow}(\ensuremath{\ell}{\ensuremath{\nu}}_{\ensuremath{\ell}})({\ensuremath{\tau}}_{\mathrm{h}}{\ensuremath{\nu}}_{\ensuremath{\tau}})\mathrm{b}\overline{\mathrm{b}}$, ($\ensuremath{\ell}=e,\ensuremath{\mu}$). The data sample corresponds to an integrated luminosity of $2.0\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ for the …

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Measurement of energy flow at large pseudorapidities in pp collisions at $ \sqrt {s} = 0.{9} $ and 7 TeV

S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, A. Tumasyan et autres

am, at, be (code pays fourni par la source)

A search for excited leptons in pp collisions at s=7 TeV

S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, A. Tumasyan et autres

A search for excited leptons is carried out with the CMS detector at the LHC, using 36 pb -1 of pp collision data recorded at √ s = 7 TeV.The search is performed for associated production of a lepton and an oppositely …

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