Browsing Natural and Mathematical Sciences by Subject "LHC"
Now showing items 1-20 of 58
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Combined measurement of the Higgs boson mass in pp collisions at root s=7 and 8 TeV with the ATLAS and CMS experiments
(American Physical Society, 2015-05-15)A measurement of the Higgs boson mass is presented based on the combined data samples of the ATLAS and CMS experiments at the CERN LHC in the H→γγ and H→ZZ→4ℓ decay channels. The results are obtained from a simultaneous ... -
Evidence for light-by-light scattering in ultraperipheral PbPb collisions at √sNN = 5.02 TeV
(Elsevier, 2019-02)Evidence for light-by-light (LbL) scattering, gamma gamma -> gamma gamma, in ultraperipheral PbPb collisions at a nucleon-nucleon center of-mass energy of 5.02 TeV is reported. LbL scattering processes are selected in ... -
Limits on the Higgs boson lifetime and width from its decay to four charged leptons
(American Physical Society, 2015-10-01)Constraints on the lifetime and width of the Higgs boson are obtained from H→ZZ→4ℓ events using data recorded by the CMS experiment during the LHC run 1 with an integrated luminosity of 5.1 and 19.7 fb−1 at a center-of-mass ... -
Measurement of associated production of vector bosons and top quark-antiquark pairs in pp collisions at root s=7 TeV
(American Physical Society, 2013-04-26)The first measurement of vector-boson production associated with a top quark-antiquark pair in proton-proton collisions at root s = 7 TeV is presented. The results are based on a data set corresponding to an integrated ... -
Measurement of charged pion, kaon, and proton production in proton-proton collisions at √s=13 TeV
(American Physical Society, 2017-12-05)Transverse momentum spectra of charged pions, kaons, and protons are measured in proton-proton collisions at root s = 13 TeV with the CMS detector at the LHC. The particles, identified via their energy loss in the silicon ... -
Measurement of differential cross sections for Higgs boson production in the diphoton decay channel in pp collisions at √s = 8 TeV
(Springer International Publishing, 2016-01)A measurement is presented of differential cross sections for Higgs boson (H) production in pp collisions at s√=8s=8 TeVTeV . The analysis exploits the H→γγH→γγ decay in data corresponding to an integrated luminosity ... -
Measurement of differential cross sections for the production of a pair of isolated photons in pp collisions at root s=7TeV
(2014-11)A measurement of differential cross sections for the production of a pair of isolated photons in proton–proton collisions at s√=7TeVs=7TeV is presented. The data sample corresponds to an integrated luminosity of 5.0 ... -
Measurement of differential top-quark-pair production cross sections in pp collisions at root s=7 TeV
(Springer Science+Business Media, 2013-03)Normalised differential top-quark-pair production cross sections are measured in pp collisions at a centre-of-mass energy of 7 TeV at the LHC with the CMS detector using data recorded in 2011 corresponding to an integrated ... -
Measurement of electroweak production of two jets in association with a Z boson in proton-proton collisions at root s=8 TeV
(Springer Nature, 2015-02)The purely electroweak (EW) cross section for the production of two jets in association with a Z boson, in proton–proton collisions at s√=8TeVs=8TeV , is measured using data recorded by the CMS experiment at the CERN LHC, ... -
Measurement of inclusive W and Z boson production cross sections in pp collisions at root s=8 TeV
(American Physical Society, 2014-05-16)A measurement of total and fiducial inclusive W and Z boson production cross sections in pp collisions at root s = 8 TeV is presented. Electron and muon final states are analyzed in a data sample collected with the CMS ... -
Measurement of jet multiplicity distributions in t(t)over-bar production in pp collisions at root s=7TeV
(Springer Science+Business Media, 2014-08)The normalised differential top quark-antiquark production cross section is measured as a function of the jet multiplicity in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC with the CMS detector. ... -
Measurement of long-range near-side two-particle angular correlations in pp collisions at s =13 TeV
(2016-04-29)Results on two-particle angular correlations for charged particles produced in pp collisions at a center-of-mass energy of 13 TeV are presented. The data were taken with the CMS detector at the LHC and correspond to an ... -
Measurement of pseudorapidity distributions of charged particles in proton-proton collisions at root s=8 TeV by the CMS and TOTEM experiments
(Springer Nature, 2014-10)Pseudorapidity ( ηη ) distributions of charged particles produced in proton–proton collisions at a centre-of-mass energy of 8 TeV TeV are measured in the ranges |η|<2.2|η|<2.2 and 5.3<|η|<6.45.3<|η|<6.4 covered by the ... -
Measurement of spin correlations in tt production using the matrix element method in the muon+jets final state in pp collisions at √s=8 TeV
(Elsevier, 2016-07-10)The consistency of the spin correlation strength in top quark pair production with the standard model (SM) prediction is tested in the muon+jets final state. The events are selected from pp collisions, collected by the CMS ... -
Measurement of the differential cross section for top quark pair production in pp collisions at root s=8TeV
(Springer Nature, 2015-11)The normalized differential cross section for top quark pair ( tt¯tt¯ ) production is measured in pp collisions at a centre-of-mass energy of 8 TeVTeV at the CERN LHC using the CMS detector in data corresponding to an ... -
Measurement of the electron charge asymmetry in inclusive w production in pp collisions at root s=7 TeV
(American Physical Society, 2012-09-14)A measurement of the electron charge asymmetry in inclusive pp -> W + X -> ev + X production at root s = 7 TeV is presented based on data recorded by the CMS detector at the LHC and corresponding to an integrated luminosity ... -
Measurement of the inelastic proton-proton cross section at root s=7 TeV
(Elsevier, 2013-05-13)A measurement is presented of the inelastic proton-proton cross section at a centre-of-mass energy of root s = 7 TeV. Using the CMS detector at the LHC, the inelastic cross section is measured through two independent methods ... -
Measurement of the muon charge asymmetry in inclusive pp -> W plus X production at root s=7 TeV and an improved determination of light parton distribution functions
(American Physical Society, 2014-08-01)Measurements of the muon charge asymmetry in inclusive pp -> W + X production at root s = 7 TeV are presented. The data sample corresponds to an integrated luminosity of 4.7 fb(-1) recorded with the CMS detector at the ... -
Measurement of the ratio of the inclusive 3-jet cross section to the inclusive 2-jet cross section in pp collisions at root s=7 TeV and first determination of the strong coupling constant in the TeV range
(Springer Science+Business Media, 2013-10)A measurement is presented of the ratio of the inclusive 3-jet cross section to the inclusive 2-jet cross section as a function of the average transverse momentum, < p(T1,2)>, of the two leading jets in the event. The data ... -
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 ...
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