A study of B0s → ηcφ and B0s → ηcπ+π− decays is performed using pp collision data corresponding to an integrated luminosity of 3.0 fb−1, collected with the LHCb detector in Run 1 of the LHC. The observation of the decay B0s → ηcφ is reported, where theηc meson is reconstructed in the pp¯, K+K−π+π−, π+π−π+π− and K+K−K+K− decay modes and the φ(1020) in the K+K− decay mode. The decay B0s → J/ψ φ is used as a normalisation channel. Evidence is also reported for the decay B0s → ηcπ+π−, where theηc meson is reconstructed in the pp¯ decay mode, using the decay B0s → J/ψ π+π− as a normalisation channel. The measured branching fractions are B(B0s → ηcφ) = (5.01 ± 0.53 ± 0.27 ± 0.63) × 10−4,B(B0s → ηcπ+π−) = (1.76 ± 0.59 ± 0.12 ± 0.29) × 10−4, where in each case the first uncertainty is statistical, the second systematic and the third uncertainty is due to the limited knowledge of the external branching fractions.

Observation of the decay B<inf>s</inf>0→ η<inf>c</inf>ϕ and evidence for B<inf>s</inf>0→ η<inf>c</inf>π+π− / Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Andreassi, G., Andreotti, M., Andrews, J.E., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - 2017:7(2017). [10.1007/JHEP07(2017)021]

Observation of the decay Bs0→ ηcϕ and evidence for Bs0→ ηcπ+π−

Capriotti, L.;Casse, G.;Sarti, A.;Sciubba, A.;
2017

Abstract

A study of B0s → ηcφ and B0s → ηcπ+π− decays is performed using pp collision data corresponding to an integrated luminosity of 3.0 fb−1, collected with the LHCb detector in Run 1 of the LHC. The observation of the decay B0s → ηcφ is reported, where theηc meson is reconstructed in the pp¯, K+K−π+π−, π+π−π+π− and K+K−K+K− decay modes and the φ(1020) in the K+K− decay mode. The decay B0s → J/ψ φ is used as a normalisation channel. Evidence is also reported for the decay B0s → ηcπ+π−, where theηc meson is reconstructed in the pp¯ decay mode, using the decay B0s → J/ψ π+π− as a normalisation channel. The measured branching fractions are B(B0s → ηcφ) = (5.01 ± 0.53 ± 0.27 ± 0.63) × 10−4,B(B0s → ηcπ+π−) = (1.76 ± 0.59 ± 0.12 ± 0.29) × 10−4, where in each case the first uncertainty is statistical, the second systematic and the third uncertainty is due to the limited knowledge of the external branching fractions.
2017
B physics, Branching fraction, Flavor physics, Hadron-Hadron scattering (experiments)
01 Pubblicazione su rivista::01a Articolo in rivista
Observation of the decay B<inf>s</inf>0→ η<inf>c</inf>ϕ and evidence for B<inf>s</inf>0→ η<inf>c</inf>π+π− / Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Andreassi, G., Andreotti, M., Andrews, J.E., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - 2017:7(2017). [10.1007/JHEP07(2017)021]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1074517
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