The anti-B0s → χc2 K+ K− decay mode is observed and its branching fraction relative to the corresponding χc1 decay mode, in a ±15 MeV/c^2 window around the ϕ mass, is found to be B(anti-B0s → χc2 K+ K−)/B(anti-B0s → χc1 K+ K−) = (17.1 ± 3.1 ± 0.4 ± 0.9)%, where the first uncertainty is statistical, the second systematic and the third due to the knowledge of the branching fractions of radiative χc decays. The decay mode anti-B0s → χc1 K+ K− allows the B0s mass to be measured as m(B0s) = 5366.83 ± 0.25 ± 0.27 MeV/c^2, where the first uncertainty is statistical and the second systematic. A combination of this result with other LHCb determinations of the B0s mass is made.

Aaij, R., Adeva, B., Adinolfi, M., Aidala, C., Ajaltouni, Z., Akar, S., et al. (2018). Observation of the Decay anti-B0s → χc2 K+ K− in the ϕ Mass Region. JOURNAL OF HIGH ENERGY PHYSICS, 2018(8), 0-19 [10.1007/JHEP08(2018)191].

Observation of the Decay anti-B0s → χc2 K+ K− in the ϕ Mass Region

Betti, F.;Capriotti, L.;Carbone, A.;Ferrari, F.;Galli, D.;Patrignani, C.;Perazzini, S.;Pisani, F.;Vagnoni, V.;Zucchelli, S.
2018

Abstract

The anti-B0s → χc2 K+ K− decay mode is observed and its branching fraction relative to the corresponding χc1 decay mode, in a ±15 MeV/c^2 window around the ϕ mass, is found to be B(anti-B0s → χc2 K+ K−)/B(anti-B0s → χc1 K+ K−) = (17.1 ± 3.1 ± 0.4 ± 0.9)%, where the first uncertainty is statistical, the second systematic and the third due to the knowledge of the branching fractions of radiative χc decays. The decay mode anti-B0s → χc1 K+ K− allows the B0s mass to be measured as m(B0s) = 5366.83 ± 0.25 ± 0.27 MeV/c^2, where the first uncertainty is statistical and the second systematic. A combination of this result with other LHCb determinations of the B0s mass is made.
2018
Aaij, R., Adeva, B., Adinolfi, M., Aidala, C., Ajaltouni, Z., Akar, S., et al. (2018). Observation of the Decay anti-B0s → χc2 K+ K− in the ϕ Mass Region. JOURNAL OF HIGH ENERGY PHYSICS, 2018(8), 0-19 [10.1007/JHEP08(2018)191].
Aaij, R.; Adeva, B.; Adinolfi, M.; Aidala, C.A.; Ajaltouni, Z.; Akar, S.; Albicocco, P.; Albrecht, J.; Alessio, F.; Alexander, M.; Alfonso Albero, A.;...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/649628
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