Determination of f<inf>s</inf>/f<inf>d</inf> for 7 TeV pp collisions and measurement of the B0→D<sup>-</sup>K<sup>+</sup> branching fraction

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. Alves, S. Amato, Y. Amhis, J. Amoraal, J. Anderson, R. B. Appleby, O. Aquines Gutierrez, L. Arrabito, A. ArtamonovM. Artuso, E. Aslanides, G. Auriemma, S. Bachmann, J. J. Back, D. S. Bailey, V. Balagura, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, A. Bates, C. Bauer, Th Bauer, A. Bay, I. Bediaga, K. Belous, I. Belyaev, E. Ben-Haim, M. Benayoun, G. Bencivenni, S. Benson, J. Benton, R. Bernet, M. O. Bettler, M. Van Beuzekom, A. Bien, S. Bifani, A. Bizzeti, P. M. Bjørnstad, T. Blake, F. Blanc, C. Blanks, J. Blouw, S. Blusk, A. Bobrov, V. Bocci, A. Bondar, N. Bondar, W. Bonivento, S. Borghi, A. Borgia, T. J.V. Bowcock, C. Bozzi, T. Brambach, J. Van Den Brand, J. Bressieux, S. Brisbane, M. Britsch, T. Britton, N. H. Brook, A. Büchler-Germann, A. Bursche, J. Buytaert, S. Cadeddu, J. M. Caicedo Carvajal, O. Callot, M. Calvi, M. Calvo Gomez, A. Camboni, P. Campana, A. Carbone, G. Carboni, R. Cardinale, A. Cardini, L. Carson, K. Carvalho Akiba

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32 Citations (Scopus)

Abstract

The relative abundance of the three decay modes B0→D -K +, B0→D -π +, and Bs0→Ds- π + produced in 7 TeV pp collisions at the LHC is determined from data corresponding to an integrated luminosity of 35pb -1. The branching fraction of B0→D -K + is found to be B(B0→D -K +)=(2.01±0.18stat±0.14syst) ×10 -4. The ratio of fragmentation fractions f s/f d is determined through the relative abundance of Bs0→Ds-π + to B0→D -K + and B0→D -π +, leading to f s/f d=0.253±0.017±0.017±0.020, where the uncertainties are statistical, systematic, and theoretical, respectively.

Original languageEnglish
Article number211801
JournalPhysical Review Letters
Volume107
Issue number21
DOIs
Publication statusPublished - 14 Nov 2011
Externally publishedYes

Bibliographical note

Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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