The relative abundance of the three decay modes B0 → D− K+, B0 → D− π+, and B0s → Ds− π+ produced in 7 TeV pp collisions at the LHC is determined from data corresponding to an integrated luminosity of 35 pb^−1. The branching fraction of B0 → D− K+ is found to be B(B0 → D− K+) = (2.01 ± 0.18(stat) ± 0.14(syst)) x 10^−4. The ratio of fragmentation fractions fs/fd is determined through the relative abundance of B0s → Ds− π+ to B0 → D− K+ and B0 → D− π+, leading to fs/fd = 0.253 ± 0.017 ± 0.017 ± 0.020, where the uncertainties are statistical, systematic, and theoretical, respectively.

R. Aaij, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, et al. (2011). Determination of fs/fd for 7 TeV pp Collisions and Measurement of the B0 → D− K+ Branching Fraction. PHYSICAL REVIEW LETTERS, 107(21), 1-8 [10.1103/PhysRevLett.107.211801].

Determination of fs/fd for 7 TeV pp Collisions and Measurement of the B0 → D− K+ Branching Fraction

CARBONE, ANGELO;GALLI, DOMENICO;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;
2011

Abstract

The relative abundance of the three decay modes B0 → D− K+, B0 → D− π+, and B0s → Ds− π+ produced in 7 TeV pp collisions at the LHC is determined from data corresponding to an integrated luminosity of 35 pb^−1. The branching fraction of B0 → D− K+ is found to be B(B0 → D− K+) = (2.01 ± 0.18(stat) ± 0.14(syst)) x 10^−4. The ratio of fragmentation fractions fs/fd is determined through the relative abundance of B0s → Ds− π+ to B0 → D− K+ and B0 → D− π+, leading to fs/fd = 0.253 ± 0.017 ± 0.017 ± 0.020, where the uncertainties are statistical, systematic, and theoretical, respectively.
2011
R. Aaij, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, et al. (2011). Determination of fs/fd for 7 TeV pp Collisions and Measurement of the B0 → D− K+ Branching Fraction. PHYSICAL REVIEW LETTERS, 107(21), 1-8 [10.1103/PhysRevLett.107.211801].
R. Aaij; B. Adeva; M. Adinolfi; C. Adrover; A. Affolder; Z. Ajaltouni; J. Albrecht; F. Alessio; M. Alexander; G. Alkhazov; P. Alvarez Cartelle; A.A. A...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/105024
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