Carregant...
Miniatura

Tipus de document

Article

Versió

Versió publicada

Data de publicació

Llicència de publicació

cc-by (c) Abellan Beteta, Carlos et al., 2013
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/194896

Measurement of B meson production cross-sections in proton-proton collisions at TeV

Títol de la revista

Director/Tutor

ISSN de la revista

Títol del volum

Resum

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.

Citació

Citació

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, Vicente josé, RUIZ, Hugo (ruiz pérez), RUIZ VALLS, Pablo, VÁZQUEZ GÓMEZ, Ricard, VILASIS-CARDONA, Xavier, LHCb Collaboration. Measurement of B meson production cross-sections in proton-proton collisions at TeV. _Journal of High Energy Physics_. 2013. Vol. 8, núm. 117, pàgs. 1-17. [consulta: 12 de abril de 2026]. ISSN: 1126-6708. [Disponible a: https://hdl.handle.net/2445/194896]

Exportar metadades

JSON - METS

Compartir registre