Prompt and Non-Prompt J/? Production in Pp Collisions at ?s =7 Tev
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Karapınar, Güler
Demir, Durmuş Ali
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GOLD
Green Open Access
Yes
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240
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38
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No
Abstract
The production of J/ψ mesons is studied in pp collisions at √s = 7 TeV with the CMS experiment at the LHC. The measurement is based on a dimuon sample corresponding to an integrated luminosity of 314 nb-1. The J/ψ differential cross section is determined, as a function of the J/ψ transverse momentum, in three rapidity ranges. A fit to the decay length distribution is used to separate the prompt from the non-prompt (b hadron to J/ψ) component. Integrated over J/ψ transverse momentum from 6.5 to 30 GeV/c and over rapidity in the range {pipe}y{pipe} < 2.4, the measured cross sections, times the dimuon decay branching fraction, are 70.9 ± 2.1(stat.) ± 3.0(syst.) ± 7.8(luminosity) nb for prompt J/ψ mesons assuming unpolarized production and 26.0 ± 1.4(stat.) ± 1.6(syst.) ± 2.9(luminosity) nb for J/ψ mesons from b-hadron decays. © CERN for the benefit of the CMS collaboration 2011.
Description
Keywords
Transverse momentum, Decays of bottom mesons, Quantum Chromodynamics (QCD), Physics and Astronomy (miscellaneous), PARTICLE PHYSICS; LARGE HADRON COLLIDER; CMS, High Energy Physics - Experiment, Subatomär fysik, Universal Monte-Carlo, High Energy Physics - Experiment (hep-ex), MONTE-CARLO, Subatomic Physics, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], PSI-PRODUCTION, Hadroproduction, GLUONS, HADROPRODUCTION, octet quarkonia production; qed radiative-corrections; universal monte-carlo; psi-production; hadroproduction; colliders; flavors; gluons; photos, info:eu-repo/classification/ddc/530, Fisica delle particelle, Transverse momentum, Photos, CMS, Physics, Octet quarkonia production, ddc:530, J/psi(3100) hadroproduction measured, Decays of bottom mesons, dimuon final state, CERN LHC Coll, OCTET QUARKONIA PRODUCTION; QED RADIATIVE-CORRECTIONS; UNIVERSAL MONTE-CARLO; PSI-PRODUCTION; HADROPRODUCTION; COLLIDERS; FLAVORS; GLUONS; PHOTOS, Quantum Chromodynamics (QCD), differential cross section, Physique des particules élémentaires, PARTICLE PHYSICS, LHC, PHOTOS, physics, FLAVORS, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Gluons, HEP; LHC; CMS, OCTET QUARKONIA PRODUCTION, FOS: Physical sciences, transverse momentum, 530, Flavors, Colliders, particle physics, QED RADIATIVE-CORRECTIONS, Engineering (miscellaneous); Physics and Astronomy (miscellaneous), Engineering (miscellaneous), UNIVERSAL, QED radiative-corrections, LARGE HADRON COLLIDER, PSI-Production, COLLIDERS, rapidity, LHC; CMS; physics; particle physics
Fields of Science
01 natural sciences, 0103 physical sciences
Citation
Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Erö, J., ...CMS Collaboration (2011). Prompt and non-prompt J/ψ production in pp collisions at √s =7 TeV. European Physical Journal C, 71(3), 1-26. doi:10.1140/epjc/s10052-011-1575-8
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N/A
Volume
71
Issue
3
Start Page
1
End Page
26
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