Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/58757
Title: Measurement of the fragmentation fraction ratio f s /f d and its dependence on B meson kinematics
Author: LHCb Collaboration
Abellan Beteta, Carlos
Calvo Gómez, M.
Camboni, Alessandro
Comerma Montells, Albert
Domingo Bonal, F.
Garrido Beltrán, Lluís
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Lopez Asamar, E.
Pérez-Calero Yzquierdo, Antonio
Picatoste Olloqui, Eduardo
Potterat, Cédric
Rives Molina, Vicente José
Ruiz, Hugo (Ruiz Pérez)
Vázquez Gómez, R.
Vilasis-Cardona, X.
Keywords: Hadrons
Gran Col·lisionador d'Hadrons
Teoria quàntica de camps
Gravitació
Relativitat (Física)
Hadrons
Large Hadron Collider (France and Switzerland)
Quantum field theory
Gravitation
Relativity (Physics)
Issue Date: Apr-2013
Publisher: Società Italiana di Fisica & Springer Verlag
Abstract: The relative production rate of B0s and B 0 mesons is determined with the hadronic decays B0s→D−sπ+ and B 0 → D − K +. The measurement uses data corresponding to 1.0 fb−1 of pp collisions at a centre-of-mass energy of s√=7 TeV recorded in the forward region with the LHCb experiment. The ratio of production rates, f s /f d , is measured to be 0.238 ± 0.004 ± 0.015 ± 0.021, where the first uncertainty is statistical, the second systematic, and the third theoretical. This is combined with a previous LHCb measurement to obtain f s /f d  = 0.256 ± 0.020. The dependence of f s /f d on the transverse momentum and pseudorapidity of the B meson is determined using the decays B0s→D−sπ+ and B 0 → D −π+. There is evidence for a decrease with increasing transverse momentum, whereas the ratio remains constant as a function of pseudorapidity. In addition, the ratio of branching fractions of the decays B 0 → D − K + and B 0 → D −π+ is measured to be 0.0822 ± 0.0011 (stat) ± 0.0025 (syst).
Note: Reproducció del document publicat a: http://dx.doi.org/10.1007/JHEP04(2013)001
It is part of: European Physical Journal C, 2013, vol. 2013, num. 4, p. 1
Related resource: http://dx.doi.org/10.1007/JHEP04(2013)001
URI: http://hdl.handle.net/2445/58757
ISSN: 1434-6044
Appears in Collections:Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))
Articles publicats en revistes (Física Quàntica i Astrofísica)

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