Observation of B-s(0) -> chi(c1)phi decay and study of B-0 -> chi K-c1,K-2*(0) decays

LHCb collaboration

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Abstract

The first observation of the decay B-s(0) -> chi(c1)phi and a study of B-0 -> chi K-c1,K-2*(0) decays are presented. The analysis is performed using a dataset, corresponding to an integrated luminosity of 1.0 fb(-1), collected by the LHCb experiment in pp collisions at a centre-of-mass energy of 7 TeV. The following ratios of branching fractions are measured:B(B-s(0) -> chi(c1)phi)/B(B-s(0) -> J/psi phi) = (18.9 +/- 1.8 (stat) +/- 1.3 (syst) +/- 0.8(B)) x 10(-2),B(B-0 -> chi K-c1*(0))//B(B-0 -> J/psi K*(0)) = (19.8 +/- 1.1 (stat) +/- 1.2 (syst) +/- 0.9(B)) x 10(-2),B(B-0 -> chi K-c2*(0))//B(B-0 -> chi K-c1*(0)) = (17.1 +/- 5.0 (stat) +/- 1.7 (syst) +/- 1.1(B)) x 10(-2),where the third uncertainty is due to the limited knowledge of the branching fractions of chi(c) -> J/psi gamma modes. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)663-678
Number of pages16
JournalNuclear Physics B
Volume874
Issue number3
DOIs
Publication statusPublished - 21 Sep 2013
Externally publishedYes

Keywords

  • RELATIVE BRANCHING FRACTIONS
  • TOOL

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