49 documents found, page 1 of 5
Measurement of the Λb polarization and angular parameters in Λb →j /ψ Λ decays ...
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.Made available in DSpace on 2022-04-30T07:32:34Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-04-01; An analysis of the bottom baryon decay Λb→J/ψ(→μ+μ-)Λ(→pπ-) is performed to measure the Λb polarization and three angular parameters in data from pp collisions at s=7 and 8 TeV, collected by the CMS experiment at the Large Hadron Collider. The Λb polarization is measured to be 0.00±0.06(stat)±0.06(syst)...
Search for the X (5568) State Decaying into Bs0 π± in Proton-Proton Collisions ...
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.Made available in DSpace on 2022-04-30T08:56:48Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-05-18; A search for resonancelike structures in the Bs0π± invariant mass spectrum is performed using proton-proton collision data collected by the CMS experiment at the LHC at s=8 TeV, corresponding to an integrated luminosity of 19.7 fb-1. The Bs0 mesons are reconstructed in the decay chain Bs0→J/ψφ, with J/ψ...
Constraining Gluon Distributions in Nuclei Using Dijets in Proton-Proton and Pr...
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Dragicevic, M.; Erö, J.; Escalante Del Valle, A.Made available in DSpace on 2022-04-30T11:13:07Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-08-07; The pseudorapidity distributions of dijets as functions of their average transverse momentum (pTave) are measured in proton-lead (pPb) and proton-proton (pp) collisions. The data samples were collected by the CMS experiment at the CERN LHC, at a nucleon-nucleon center-of-mass energy of 5.02 TeV. A signi...
Observation of the Z →ψ + - Decay in pp Collisions at s =13 TeV
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.Made available in DSpace on 2022-04-30T12:26:19Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-10-04; This Letter presents the observation of the rare Z boson decay Z→ψ + -. Here, ψ represents contributions from direct J/ψ and ψ(2S)→J/ψX, + - is a pair of electrons or muons, and the J/ψ meson is detected via its decay to μ+μ-. The sample of proton-proton collision data, collected by the CMS experiment a...
Measurement of jet substructure observables in t t events from proton-proton co...
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.Made available in DSpace on 2022-04-30T13:54:30Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-11-01; A measurement of jet substructure observables is presented using tt events in the lepton+jets channel from proton-proton collisions at s=13 TeV recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of 35.9 fb-1. Multiple jet substructure observables are measured for jets i...
Angular analysis of the decay B+ →k+μ+μ- in proton-proton collisions at s =8 TeV
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.Made available in DSpace on 2022-04-30T14:55:15Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-12-01; The angular distribution of the flavor-changing neutral current decay B+→K+μ+μ- is studied in proton-proton collisions at a center-of-mass energy of 8 TeV. The analysis is based on data collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 20.5 fb-1. The forward-backwa...
CMS Collaboration
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Dragicevic, M.; Erö, J.; Escalante Del Valle, A.Made available in DSpace on 2022-04-30T15:26:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-02-01; Yerevan Physics Institute; Institut für Hochenergiephysik; Institute for Nuclear Problems; Universiteit Antwerpen; Vrije Universiteit Brussel; Université Libre de Bruxelles; Ghent University; Université Catholique de Louvain; Centro Brasileiro de Pesquisas Fisicas; Universidade do Estado do Rio de Janei...
Strange hadron production in pp and pPb collisions at sNN =5.02 TeV
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Dragicevic, M.; Erö, J.; Escalante Del Valle, A.Made available in DSpace on 2022-05-01T00:16:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-06-01; The transverse momentum (pT) distributions of Λ, Ξ-, and ω- baryons, their antiparticles, and KS0 mesons are measured in proton-proton (pp) and proton-lead (pPb) collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV over a broad rapidity range. The data, corresponding to integrated luminosit...
Evidence for X(3872) in Pb-Pb Collisions and Studies of its Prompt Production a...
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Dragicevic, M.; Erö, J.; Escalante Del Valle, A.; Flechl, M.; Frühwirth, R.Made available in DSpace on 2022-05-01T12:56:47Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-01-21; The first evidence for X(3872) production in relativistic heavy ion collisions is reported. The X(3872) production is studied in lead-lead (Pb-Pb) collisions at a center-of-mass energy of sNN=5.02 TeV per nucleon pair, using the decay chain X(3872)→J/ψπ+π-→μ+μ-π+π-. The data were recorded with the CMS d...
Alignment of the CMS muon system with cosmic-ray and beam-halo muons
Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.; Adam, W.; Arnold, B.; Bergauer, H.; Bergauer, T.; Dragicevic, M.; Eichberger, M.; Eroe, J.; Friedl, M.Made available in DSpace on 2020-12-10T18:14:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-03-01; FMSR (Austria); FNRS (Belgium); FWO (Belgium); Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ); Fundação de Amparo à Pesquisa do Estado de São Pau...