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+ → χc0 π+) = (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 anti-b c weak annihilation is found for the region m(K− π+) < 1.834 GeV/c^2, 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+ → χc0 π+. PHYSICAL REVIEW D, 94(9), 1-10 [10.1103/PhysRevD.94.091102].

Study of Bc+ Decays to the K+ K− π+ Final State and Evidence for the Decay Bc+ → χc0 π+

BETTI, FEDERICO;Capriotti, L.;CARBONE, ANGELO;FERRARI, FABIO;GALLI, DOMENICO;MUSSINI, MANUEL;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZANGOLI, MARIA;ZUCCHELLI, STEFANO
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+ → χc0 π+) = (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 anti-b c weak annihilation is found for the region m(K− π+) < 1.834 GeV/c^2, with a significance of 2.4 standard deviations.
2016
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+ → χc0 π+. PHYSICAL REVIEW D, 94(9), 1-10 [10.1103/PhysRevD.94.091102].
Aaij, R.; Adeva, B.; Adinolfi, M.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Alkhazov, G.; Alvarez Cartelle, P.; Alv...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/576103
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