A study of Bc+→K+K-π+ decays is performed for the first time using data corresponding to an integrated luminosity of 3.0 fb-1 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+)=(9.8-3.0+3.4(stat)±0.8(syst))×10-6. 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 bc weak annihilation is found for the region m(K-π+)<1.834 GeV/c2, with a significance of 2.4 standard deviations.

Study of B-c(+) decays to the K+K-pi(+) final state and evidence for the decay B-c(+) -> chi(c0)pi(+)

Bursche A.;Cardini A.;Chen S.;Dettori F.;Lai A.;Manca G.;Oldeman R.;Saitta B.;
2016-01-01

Abstract

A study of Bc+→K+K-π+ decays is performed for the first time using data corresponding to an integrated luminosity of 3.0 fb-1 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+)=(9.8-3.0+3.4(stat)±0.8(syst))×10-6. 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 bc weak annihilation is found for the region m(K-π+)<1.834 GeV/c2, with a significance of 2.4 standard deviations.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11584/238864
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