The difference in total widths between the B+ c and B+ mesons is measured using a data sample corresponding to an integrated luminosity of 3.0 fb−1 collected by the LHCb experiment in 7 and 8 TeV centre-of-mass energy proton–proton collisions at the LHC. Through the study of the time evolution of B+ c → J/ψπ+ and B+ → J/ψK+ decays, the width difference is measured to be ≡ B+ c − B+ = 4.46 ± 0.14 ± 0.07 mm−1 c, where the first uncertainty is statistical and the second systematic. The known lifetime of the B+ meson is used to convert this to a precise measurement of the B+ c lifetime, τB+ c = 513.4 ± 11.0 ± 5.7 fs, where the first uncertainty is statistical and the second is systematic.

Measurement of the lifetime of the Bc+ meson using the Bc+→J/ψπ+ decay mode / 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: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 742:(2015), pp. 29-37. [10.1016/j.physletb.2015.01.010]

Measurement of the lifetime of the Bc+ meson using the Bc+→J/ψπ+ decay mode

Capriotti, L.;Casse, G.;Di Domenico, A.;SARTI, ALESSIO;SCIUBBA, Adalberto;
2015

Abstract

The difference in total widths between the B+ c and B+ mesons is measured using a data sample corresponding to an integrated luminosity of 3.0 fb−1 collected by the LHCb experiment in 7 and 8 TeV centre-of-mass energy proton–proton collisions at the LHC. Through the study of the time evolution of B+ c → J/ψπ+ and B+ → J/ψK+ decays, the width difference is measured to be ≡ B+ c − B+ = 4.46 ± 0.14 ± 0.07 mm−1 c, where the first uncertainty is statistical and the second systematic. The known lifetime of the B+ meson is used to convert this to a precise measurement of the B+ c lifetime, τB+ c = 513.4 ± 11.0 ± 5.7 fs, where the first uncertainty is statistical and the second is systematic.
2015
Nuclear and High Energy Physics
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the lifetime of the Bc+ meson using the Bc+→J/ψπ+ decay mode / 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: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 742:(2015), pp. 29-37. [10.1016/j.physletb.2015.01.010]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/836062
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