The ratio of branching fractions R_K/π ≡ B(Bc+ → J/ψ K+)/B(Bc+ → J/ψ π+) is measured with pp collision data collected by the LHCb experiment at centre-of-mass energies of 7 TeV and 8 TeV, corresponding to an integrated luminosity of 3 fb^−1. It is found to be R_K/π = 0.079 ± 0.007 ± 0.003, where the first uncertainty is statistical and the second is systematic. This measurement is consistent with the previous LHCb result, while the uncertainties are significantly reduced.

Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2016). Measurement of the Ratio of Branching Fractions B(Bc+ → J/ψ K+)/B(Bc+ → J/ψ π+). JOURNAL OF HIGH ENERGY PHYSICS, 2016(9), 0-14 [10.1007/JHEP09(2016)153].

Measurement of the Ratio of Branching Fractions B(Bc+ → J/ψ K+)/B(Bc+ → J/ψ 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

The ratio of branching fractions R_K/π ≡ B(Bc+ → J/ψ K+)/B(Bc+ → J/ψ π+) is measured with pp collision data collected by the LHCb experiment at centre-of-mass energies of 7 TeV and 8 TeV, corresponding to an integrated luminosity of 3 fb^−1. It is found to be R_K/π = 0.079 ± 0.007 ± 0.003, where the first uncertainty is statistical and the second is systematic. This measurement is consistent with the previous LHCb result, while the uncertainties are significantly reduced.
2016
Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2016). Measurement of the Ratio of Branching Fractions B(Bc+ → J/ψ K+)/B(Bc+ → J/ψ π+). JOURNAL OF HIGH ENERGY PHYSICS, 2016(9), 0-14 [10.1007/JHEP09(2016)153].
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/11585/565382
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