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Study of Bc+ decays to the K+Kπ+ final state and evidence for the decay Bc+χc0π+

R. Aaij et al. (LHCb Collaboration)
Phys. Rev. D 94, 091102(R) – Published 30 November 2016
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Abstract

A study of Bc+K+Kπ+ decays is performed for the first time using data corresponding to an integrated luminosity of 3.0fb1 collected by the LHCb experiment in pp collisions at center-of-mass energies of 7 and 8 TeV. Evidence for the decay Bc+χc0(K+K)π+ is reported with a significance of 4.0 standard deviations, giving σ(Bc+)σ(B+)×B(Bc+χc0π+)=(9.83.0+3.4(stat)±0.8(syst))×106. Here B denotes a branching fraction while σ(Bc+) and σ(B+) are the production cross sections for Bc+ and B+ mesons. An indication of b¯c weak annihilation is found for the region m(Kπ+)<1.834GeV/c2, with a significance of 2.4 standard deviations.

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  • Received 21 July 2016

DOI:https://doi.org/10.1103/PhysRevD.94.091102

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

© 2016 CERN, for the LHCb Collaboration

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Vol. 94, Iss. 9 — 1 November 2016

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