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Title: Measurement of B meson production cross-sections in proton-proton collisions at TeV
Author: Abellan Beteta, Carlos
Calvo Gómez, Míriam
Camboni, Alessandro
Comerma Montells, Albert
Garrido Beltrán, Lluís
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
López Asamar, Elias
Oyanguren, A.
Pérez-Calero Yzquierdo, Antonio
Picatoste Olloqui, Eduardo
Potterat, Cédric
Rives Molina, V.
Ruiz, Hugo (Ruiz Pérez)
Ruiz Valls, P.
Vázquez Gómez, Ricard
Vilasis-Cardona, Xavier
LHCb Collaboration
Keywords: Hadrons
Col·lisions (Física nuclear)
Mesons (Física nuclear)
Collisions (Nuclear physics)
Mesons (Nuclear physics)
Issue Date: Aug-2013
Publisher: Springer Verlag
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 B0 s mesons are reconstructed in the exclusive decays B+ → J/ψ K+, B0 → J/ψ K∗0 and B0 s → 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 pT and rapidity y, in the range 0 < pT < 40 GeV/c and 2.0 < y < 4.5. The integrated cross-sections in the same pT 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 → B0 s + 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.
Note: Reproducció del document publicat a:
It is part of: Journal of High Energy Physics, 2013, vol. 8, num. 117, p. 1-17
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ISSN: 1126-6708
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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