A precision measurement of the Bc+ meson mass is performed using proton-proton collision data collected with the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to a total integrated luminosity of 9.0 fb^−1. The Bc+ mesons are reconstructed via the decays Bc+ → J/ψ π+, Bc+ → J/ψ π+ π− π+, Bc+ → J/ψ p anti-p π+, Bc+ → J/ψ Ds+, Bc+ → J/ψ D0 K+ and Bc+ → B0s π+. Combining the results of the individual decay channels, the Bc+ mass is measured to be 6274.47 ± 0.27(stat) ± 0.17(syst) MeV/c2. This is the most precise measurement of the Bc+ mass to date. The difference between the Bc+ and B0s meson masses is measured to be 907.75 ± 0.37(stat) ± 0.27(syst) MeV/c^2.

Aaij, R., Abellán Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., et al. (2020). Precision Measurement of the Bc+ Meson Mass. JOURNAL OF HIGH ENERGY PHYSICS, 2020(7), 0-20 [10.1007/JHEP07(2020)123].

Precision Measurement of the Bc+ Meson Mass

Betti, F.;Capriotti, L.;Carbone, A.;Ferrari, F.;Galli, D.;Maccolini, S.;Manuzzi, D.;Patrignani, C.;Perazzini, S.;Pisani, F.;Zucchelli, S.
2020

Abstract

A precision measurement of the Bc+ meson mass is performed using proton-proton collision data collected with the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to a total integrated luminosity of 9.0 fb^−1. The Bc+ mesons are reconstructed via the decays Bc+ → J/ψ π+, Bc+ → J/ψ π+ π− π+, Bc+ → J/ψ p anti-p π+, Bc+ → J/ψ Ds+, Bc+ → J/ψ D0 K+ and Bc+ → B0s π+. Combining the results of the individual decay channels, the Bc+ mass is measured to be 6274.47 ± 0.27(stat) ± 0.17(syst) MeV/c2. This is the most precise measurement of the Bc+ mass to date. The difference between the Bc+ and B0s meson masses is measured to be 907.75 ± 0.37(stat) ± 0.27(syst) MeV/c^2.
2020
Aaij, R., Abellán Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., et al. (2020). Precision Measurement of the Bc+ Meson Mass. JOURNAL OF HIGH ENERGY PHYSICS, 2020(7), 0-20 [10.1007/JHEP07(2020)123].
Aaij, R.; Abellán Beteta, C.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Afsharnia, H.; Aidala, C.A.; Aiola, S.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; A...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/772396
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