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http://hdl.handle.net/2445/131774
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DC Field | Value | Language |
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dc.contributor.author | Abellan Beteta, Carlos | - |
dc.contributor.author | Calvo Gómez, Míriam | - |
dc.contributor.author | Camboni, Alessandro | - |
dc.contributor.author | Comerma Montells, Albert | - |
dc.contributor.author | Domingo Bonal, Francesc | - |
dc.contributor.author | Garrido Beltrán, Lluís | - |
dc.contributor.author | Gascón Fora, David | - |
dc.contributor.author | Grabalosa Gándara, Marc | - |
dc.contributor.author | Graciani Díaz, Ricardo | - |
dc.contributor.author | Graugés Pous, Eugeni | - |
dc.contributor.author | López Asamar, Elias | - |
dc.contributor.author | Musy, Marco | - |
dc.contributor.author | Pérez-Calero Yzquierdo, Antonio | - |
dc.contributor.author | Picatoste Olloqui, Eduardo | - |
dc.contributor.author | Pie Valls, B. (Blai) | - |
dc.contributor.author | Potterat, Cédric | - |
dc.contributor.author | Puig Navarro, Albert | - |
dc.contributor.author | Roselló, M. | - |
dc.contributor.author | Ruiz, Hugo (Ruiz Pérez) | - |
dc.contributor.author | Vázquez Gómez, Ricard | - |
dc.contributor.author | Vilasis-Cardona, Xavier | - |
dc.contributor.author | LHCb Collaboration | - |
dc.date.accessioned | 2019-04-08T11:22:22Z | - |
dc.date.available | 2019-04-08T11:22:22Z | - |
dc.date.issued | 2012-02-01 | - |
dc.identifier.issn | 1550-7998 | - |
dc.identifier.uri | http://hdl.handle.net/2445/131774 | - |
dc.description.abstract | Measurements of b hadron production ratios in proton-proton collisions at a center-of-mass energy of 7 TeV with an integrated luminosity of 3 pb − 1 are presented. We study the ratios of strange B meson to light B meson production f s / ( f u + f d ) and Λ 0 b baryon to light B meson production f Λ b / ( f u + f d ) as a function of the charmed hadron-muon pair transverse momentum p T and the b hadron pseudorapidity η , for p T between 0 and 14 GeV and η between 2 and 5. We find that f s / ( f u + f d ) is consistent with being independent of p T and η , and we determine f s / ( f u + f d ) = 0.134 ± 0.004 + 0.011 − 0.010 , where the first error is statistical and the second systematic. The corresponding ratio f Λ b / ( f u + f d ) is found to be dependent upon the transverse momentum of the charmed hadron-muon pair, f Λ b / ( f u + f d ) = ( 0.404 ± 0.017 ( stat ) ± 0.027 ( syst ) ± 0.105 ( Br ) ) × [ 1 − ( 0.031 ± 0.004 ( stat ) ± 0.003 ( syst ) ) × p T ( GeV ) ] , where Br reflects an absolute scale uncertainty due to the poorly known branching fraction B ( Λ + c → p K − π + ) . We extract the ratio of strange B meson to light neutral B meson production f s / f d by averaging the result reported here with two previous measurements derived from the relative abundances of ¯¯¯ B 0 s → D + s π − to ¯¯¯ B 0 → D + K − and ¯¯¯ B 0 → D + π − . We obtain f s / f d = 0.267 + 0.021 − 0.020 . | - |
dc.format.extent | 16 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | American Physical Society | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.85.032008 | - |
dc.relation.ispartof | Physical Review D, 2012, vol. 85, num. 3, p. 032008 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevD.85.032008 | - |
dc.rights | cc by (c) CERN; LHCb Collaboration, 2012 | - |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Física de partícules | - |
dc.subject.classification | Experiments | - |
dc.subject.classification | Col·lisions (Física) | - |
dc.subject.classification | Hadrons | - |
dc.subject.other | Particle physics | - |
dc.subject.other | Experiments | - |
dc.subject.other | Collisions (Physics) | - |
dc.subject.other | Hadrons | - |
dc.title | Measurement of b hadron production fractions in 7 TeV pp collisions | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 618958 | - |
dc.date.updated | 2019-04-08T11:22:22Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) Articles publicats en revistes (Física de la Matèria Condensada) Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
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