A baryonic decay of the B+c meson, B+c → J/ψpp¯π+, is observed for the first time, with a significance of 7.3 standard deviations, in pp collision data collected with the LHCb detector and corresponding to an integrated luminosity of 3.0 fb-1 taken at center-of-mass energies of 7 and 8 TeV. With the B+c → J/ψπ+ decay as the normalization channel, the ratio of branching fractions is measured to be B(B+c → J/ψpp¯π+)/B(B+c → J/ψπ+) = 0.143+0.039-0.034(stat) ± 0.013(syst). The mass of the B+c meson is determined as M(B+c) = 6274.0 ± 1.8(stat) ± 0.4(syst) MeV/c2, using the B+c → J/ψpp¯π+ channel.

First observation of a baryonic B+c decay / Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., 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., Anderson, J., Andreassen, R., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 113:15(2014), pp. N/A-N/A. [10.1103/PhysRevLett.113.152003]

First observation of a baryonic B+c decay

Bizzeti A.;
2014

Abstract

A baryonic decay of the B+c meson, B+c → J/ψpp¯π+, is observed for the first time, with a significance of 7.3 standard deviations, in pp collision data collected with the LHCb detector and corresponding to an integrated luminosity of 3.0 fb-1 taken at center-of-mass energies of 7 and 8 TeV. With the B+c → J/ψπ+ decay as the normalization channel, the ratio of branching fractions is measured to be B(B+c → J/ψpp¯π+)/B(B+c → J/ψπ+) = 0.143+0.039-0.034(stat) ± 0.013(syst). The mass of the B+c meson is determined as M(B+c) = 6274.0 ± 1.8(stat) ± 0.4(syst) MeV/c2, using the B+c → J/ψpp¯π+ channel.
2014
113
15
N/A
N/A
First observation of a baryonic B+c decay / Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., 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., Anderson, J., Andreassen, R., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 113:15(2014), pp. N/A-N/A. [10.1103/PhysRevLett.113.152003]
Aaij, R.; Adeva, B.; Adinolfi, M.; Affolder, A.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Alkhazov, G.; Alvarez Car...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1209507
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