Browsing Natural and Mathematical Sciences by Subject "CMS"
Now showing items 41-60 of 187
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Measurement of the jet mass in highly boosted tt events from pp collisions at √s = 8 TeV
(Springer International Publishing, 2017)The first measurement of the jet mass mjetmjet of top quark jets produced in tt¯tt¯ events from pp collisions at s√=8s=8 TeVTeV is reported for the jet with the largest transverse momentum pTpT in highly boosted hadronic ... -
Measurement of the mass difference between top quark and antiquark in pp collisions at s=8 TeV
(Elsevier, 2017-07-10)The invariance of the standard model (SM) under the CPT transformation predicts equality of particle and antiparticle masses. This prediction is tested by measuring the mass difference between the top quark and antiquark ... -
Measurement of the pp -> ZZ production cross section and constraints on anomalous triple gauge couplings in four-lepton final states at root s=8 TeV
(Elsevier, 2015-01-05)A measurement of the inclusive ZZ production cross section and constraints on anomalous triple gauge couplings in proton–proton collisions at source are presented. The analysis is based on a data sample, corresponding to ... -
Measurement of the production cross section for a W boson and two b jets in pp collisions at root s=7 TeV
(Elsevier, 2014-07-30)The production cross section for a Wboson and two b jets is measured using proton-proton collisions at v root s = 7 TeV in a data sample collected with the CMS experiment at the LHC corresponding to an integrated luminosity ... -
Measurement of the production cross section ratio σ(χ<inf>b2</inf>(1P))/σ(χ<inf>b1</inf>(1P)) in pp collisions at s=8TeV
(Elsevier, 2015-04-09)A measurement of the production cross section ratio σ(χb2(1P))/σ(χb1(1P)) is presented. The χb1(1P) and χb2(1P) bottomonium states, promptly produced in pp collisions at View the MathML source, are detected by the CMS ... -
Measurement of the prompt J/ψ and ψ(2S) polarizations in pp collisions at =7 TeV
(Elsevier, 2013-12-18)The polarizations of prompt J/ψ and ψ(2S) mesons are measured in proton–proton collisions at View the MathML source, using a dimuon data sample collected by the CMS experiment at the LHC, corresponding to an integrated ... -
Measurement of the ratio B(t -> Wb)/B(t -> Wq) in pp collisions at root s=8 TeV
(Elsevier, 2014-09-07)The ratio of the top-quark branching fractions R = B(t --> Wb)/B(t --> Wq), where the denominator includes the sum over all down-type quarks (q = b, s, d), is measured in the t (t) over bar dilepton final state with ... -
Measurement of the single top quark and antiquark production cross sections in the tchannel and their ratio in proton-proton collisions at √s=13 TeV
(Elsevier, 2020-01-10)Measurements of the cross sections for the production of single top quarks and antiquarks in the t channel, and their ratio, are presented for proton-proton collisions at a center-of-mass energy of 13 TeV. The data set ... -
Measurement of the t(t)over-bar production cross section in pp collisions at root s=7 TeV with lepton plus jets final states
(Elsevier, 2013-03-13)A measurement of the a production cross section in pp collisions at root s = 7 TeV is presented. The results are based on data corresponding to an integrated luminosity of 2.3 fb(-1) collected by the CMS detector at the ... -
Measurement of the triple-differential dijet cross section in proton-proton collisions at √s = 8 TeV and constraints on parton distribution functions
(Springer International Publishing, 2017-11-07)A measurement is presented of the triple-differential dijet cross section at a centre-of-mass energy of 8 TeV using 19.7 fb(-1) of data collected with the CMS detector in proton-proton collisions at the LHC. The cross ... -
Measurement of the tt production cross section in pp collisions at √s=8 TeV in dilepton final states containing one τ lepton
(Elsevier, 2014-12-12)The top-quark pair production cross section is measured in final states with one electron or muon and one hadronically decaying τ lepton from the process View the MathML source, where ℓ=e,μ. The data sample corresponds ... -
Measurement of the tt‾bb‾ production cross section in the all-jet final state in pp collisions at √s=13 TeV
(Elsevier, 2020-04-10)A measurement of the production cross section of top quark pairs in association with two b jets (t (t) over barb (b) over bar) is presented using data collected in proton-proton collisions at root s=13 TeV by the CMS ... -
Measurement of the W boson helicity fractions in the decays of top quark pairs to lepton plus jets final states produced in pp collisions at root s=8 TeV
(Elsevier, 2016)The W boson helicity fractions from top quark decays in t (t) over bar events are measured using data from proton-proton collisions at a centre-of-mass energy of 8 TeV. The data were collected in 2012 with the CMS detector ... -
Measurement of the W+W- and ZZ production cross sections in pp collisions at root s=8 TeV
(Elsevier, 2013-04-25)The W+W- and ZZ production cross sections are measured in proton-proton collisions at root s = 8 TeV with the CMS experiment at the LHC in data samples corresponding to an integrated luminosity of up to 5.3 fb(-1). The ... -
Measurement of the Y(1S) pair production cross section and search for resonances decaying to Y(1S)μ+μ−in proton-proton collisions at √s=13 TeV
(Elsevier, 2020-09-10)The fiducial cross section for Y(1S) pair production in proton-proton collisions at a center-of-mass energy of 13TeVin the region where both Y(1S) mesons have an absolute rapidity below 2.0 is measured to be 79 +/- 11 ... -
Measurement of the Z boson differential cross section in transverse momentum and rapidity in proton-proton collisions at 8 TeV
(Elsevier, 2015-10-07)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 View the MathML source, corresponding to an ... -
Measurement of the ZZ production cross section and Z -> l(+)l(-)l '(+)l '(-) branching fraction in pp collisions at root s=13TeV
(Elsevier, 2016)Four-lepton production in proton-proton collisions, pp -> (Z/gamma*)(Z/gamma*)-> l(+)l(-)l '(+)l '(-), where l,l '(-) = e or mu, is studied at a center-of-mass energy of 13 TeV with the CMS detector at the LHC. The data ... -
Measurement of the Λb cross section and the (Lambda)over-bar(b) to Λb ratio with J/ψΛ decays in pp collisions at root s=7 TeV
(Elsevier, 2012-08-14)The Lambda b differential production cross section and the cross section ratio sigma((Lambda) over bar (b))/sigma(Lambda(b)) are measured as functions of transverse momentum p(T)(Lambda b) rapidity vertical bar y(Lambda ... -
Measurement of the ϒ(1S), ϒ(2S), and ϒ(3S) cross sections in pp collisions at =7 TeV
(Elsevier, 2013-11-25)The Υ(1S), Υ(2S), and Υ(3S) production cross sections are measured using a data sample corresponding to an integrated luminosity of 35.8±1.4 pb−1 of proton–proton collisions at s√=7 TeV, collected with the CMS detector at ... -
Measurements of production cross sections of polarized same-sign W boson pairs in association with two jets in proton-proton collisions at √s = 13 TeV
(Elsevier, 2021-01-10)The first measurements of production cross sections of polarized same-sign W±W± boson pairs in proton-proton collisions are reported. The measurements are based on a data sample collected with the CMS detector at the LHC ...
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