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Now showing items 91-100 of 104
Measurements of t ̄t cross sections in association with b jets and inclusive jets and their ratio using dilepton final states in pp collisions at √s = 13 TeV
(Elsevier BV, 2017-11)
© 2017 The Author The cross sections for the production of tt¯bb¯ and tt¯jj events and their ratio σtt¯bb¯/σtt¯jjare measured using data corresponding to an integrated luminosity of 2.3 fb−1collected in pp collisions at ...
Measurement of prompt and nonprompt J/ψ production in pp and pPb collisions at √sNN = 5.02 TeV
(Springer Nature, 2017-04)
© 2017, CERN for the benefit of the CMS collaboration. This paper reports the measurement of J / ψ meson production in proton–proton (p p) and proton–lead (p Pb) collisions at a center-of-mass energy per nucleon pair of ...
Evidence for collectivity in pp collisions at the LHC
(Elsevier BV, 2017-02)
Measurements of two- and multi-particle angular correlations in pp collisions at √s=5, 7, and 13 TeV are presented as a function of charged-particle multiplicity. The data, corresponding to integrated luminosities of ...
Suppression and azimuthal anisotropy of prompt and nonprompt J/ψ production in PbPb collisions at √s[subscript NN] =2.76 TeV
(Springer Nature, 2017-04)
The nuclear modification factor R[subscript AA] and the azimuthal anisotropy coefficient v[subscript 2] of prompt and nonprompt (i.e. those from decays of b hadrons) J/ψ mesons, measured from PbPb and pp collisions at ...
A search for new phenomena in pp collisions at √s = 13 TEV in final states with missing transverse momentum and at least one jet using the α[subscript T] variable
(2017-05)
A search for new phenomena is performed in final states containing one or more jets and an imbalance in transverse momentum in pp collisions at a centre-of-mass energy of 13TeV. The analysed data sample, recorded with the ...
Search for Light Bosons in Decays of the 125 GeV Higgs Boson in Proton-Proton Collisions at √s = 8 TeV
(Springer Nature, 2017-09)
A search is presented for decays beyond the standard model of the 125 GeV Higgs bosons to a pair of light bosons, based on models with extended scalar sectors. Light boson masses between 5 and 62.5 GeV are probed in final ...
Search for third-generation scalar leptoquarks and heavy right-handed neutrinos in final states with two tau leptons and two jets in proton-proton collisions at √s=13 TeV
(Springer Nature, 2017-07)
A search is performed for third-generation scalar leptoquarks and heavy right-handed neutrinos in events containing one electron or muon, one hadronically decaying τ lepton, and at least two jets, using a √s=13 TeV pp ...
Searches for W′ bosons decaying to a top quark and a bottom quark in proton-proton collisions at 13 TeV
(Springer Nature, 2017-08)
Searches are presented for heavy gauge bosons decaying into a top and a bottom quark in data collected by the CMS experiment at √s = 13 TeV that correspond to an integrated luminosity of 2.2 and 2.6 fb⁻¹ in the leptonic ...
Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV
(IOP Publishing, 2017-02)
Improved jet energy scale corrections, based on a data sample corresponding to an integrated luminosity of 19.7 fb ⁻¹ collected by the CMS experiment in proton-proton collisions at a center-of-mass energy of 8 TeV, are ...
Mechanical stability of the CMS strip tracker measured with a laser alignment system
(IOP Publishing, 2017-04)
The CMS tracker consists of 206 m 2 of silicon strip sensors assembled on carbon fibre composite structures and is designed for operation in the temperature range from -25 to +25°C. The mechanical stability of tracker ...