Measurement of B meson production cross-sections in proton-proton collisions at TeV
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...
| Autores: | , , , , , , , , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2013 |
| País: | España |
| Institución: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositorio: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:2445/194896 |
| Acceso en línea: | https://hdl.handle.net/2445/194896 |
| Access Level: | acceso abierto |
| Palabra clave: | Hadrons Col·lisions (Física nuclear) Mesons (Física nuclear) Collisions (Nuclear physics) Mesons (Nuclear physics) |
| Sumario: | 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. |
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