The lifetime of the B-c(-) meson is measured using 272 exclusive B-c(-) -> J/psi (-> mu(+) mu(-))pi(-) decays reconstructed in data from proton-antiproton collisions corresponding to an integrated luminosity of 6.7 fb(-1) recorded by the CDF II detector at the Fermilab Tevatron. The lifetime of the B-c(-) meson is measured to be tau(B-c(-)) = 0.452 +/- 0.048(stat) +/- 0.027(syst) ps. This is the first measurement of the B-c(-) meson lifetime in a fully reconstructed hadronic channel, and it agrees with previous results and has comparable precision. DOI: 10.1103/PhysRevD.87.011101
Titolo: | Measurement of the B-c(-) meson lifetime in the decay B-c(-) -> J/psi pi(-) | |
Autori: | ||
Data di pubblicazione: | 2013 | |
Rivista: | ||
Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevD.87.011101 | |
Handle: | http://hdl.handle.net/11384/39045 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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