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.

Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2016). Study of Bc+ decays to the K+K-π+ final state and evidence for the decay Bc+ →χc0π+. PHYSICAL REVIEW D, 94(9) [10.1103/PhysRevD.94.091102].

Study of Bc+ decays to the K+K-π+ final state and evidence for the decay Bc+ →χc0π+

BELLOLI, NICOLETTA;BORGHERESI, ALESSIO;Borsato, M;CALVI, MARTA;CARNITI, PAOLO;CASSINA, LORENZO;FAZZINI, DAVIDE;GOTTI, CLAUDIO;GRILLO, LUCIA;Martinelli, M;MATTEUZZI, CLARA;Petruzzo, M;
2016

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.
Articolo in rivista - Articolo scientifico
Nuclear and High Energy Physics
English
2016
94
9
091102
none
Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2016). Study of Bc+ decays to the K+K-π+ final state and evidence for the decay Bc+ →χc0π+. PHYSICAL REVIEW D, 94(9) [10.1103/PhysRevD.94.091102].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/154173
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