The production cross-sections of B mesons are measured in pp collisions at a centre-of-mass energy of 7 TeV, using data collected with the LHCb detector corresponding to a integrated luminosity of 0.36 fb^−1. The B+, B0 and B0s mesons are reconstructed in the exclusive decays B+ → J/ψ K+, B0 → J/ψ K*0 and B0s → J/ψ ϕ, with J/ψ → μ+ μ−, K*0 → K+ π− and ϕ → K+ K−. The differential cross-sections are measured as functions of B meson transverse momentum p_T and rapidity y, in the range 0 < p_T < 40 GeV/c and 2.0 < y < 4.5. The integrated cross-sections in the same p_T and y ranges, including charge-conjugate states, are measured to be σ(pp → B+ + X) = 38.9 ± 0.3(stat.) ± 2.5(syst.) ± 1.3(norm.) μb, σ(pp → B0 + X) = 38.1 ± 0.6(stat.) ± 3.7(syst.) ± 4.7(norm.) μb, σ(pp → B0s + X) = 10.5 ± 0.2(stat.) ± 0.8(syst.) ± 1.0(norm.) μb, where the third uncertainty arises from the pre-existing branching fraction measurements.

R. Aaij, C. Abellan Beteta, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, et al. (2013). Measurement of B Meson Production Cross-Sections in Proton-Proton Collisions at √s = 7 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2013(8), 0-16 [10.1007/JHEP08(2013)117].

Measurement of B Meson Production Cross-Sections in Proton-Proton Collisions at √s = 7 TeV

CARBONE, ANGELO;GALLI, DOMENICO;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZANGOLI, MARIA;
2013

Abstract

The production cross-sections of B mesons are measured in pp collisions at a centre-of-mass energy of 7 TeV, using data collected with the LHCb detector corresponding to a integrated luminosity of 0.36 fb^−1. The B+, B0 and B0s mesons are reconstructed in the exclusive decays B+ → J/ψ K+, B0 → J/ψ K*0 and B0s → J/ψ ϕ, with J/ψ → μ+ μ−, K*0 → K+ π− and ϕ → K+ K−. The differential cross-sections are measured as functions of B meson transverse momentum p_T and rapidity y, in the range 0 < p_T < 40 GeV/c and 2.0 < y < 4.5. The integrated cross-sections in the same p_T and y ranges, including charge-conjugate states, are measured to be σ(pp → B+ + X) = 38.9 ± 0.3(stat.) ± 2.5(syst.) ± 1.3(norm.) μb, σ(pp → B0 + X) = 38.1 ± 0.6(stat.) ± 3.7(syst.) ± 4.7(norm.) μb, σ(pp → B0s + X) = 10.5 ± 0.2(stat.) ± 0.8(syst.) ± 1.0(norm.) μb, where the third uncertainty arises from the pre-existing branching fraction measurements.
2013
R. Aaij, C. Abellan Beteta, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, et al. (2013). Measurement of B Meson Production Cross-Sections in Proton-Proton Collisions at √s = 7 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2013(8), 0-16 [10.1007/JHEP08(2013)117].
R. Aaij; C. Abellan Beteta; B. Adeva; M. Adinolfi; C. Adrover; A. Affolder; Z. Ajaltouni; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; ...espandi
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/172892
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 92
social impact