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EnglishWe present a measurement of the ratio of the Bs⁰ meson lifetime, in the flavor-specific decay to Ds⁺pi⁻, to that of the B⁰ meson. The pp collision data used correspond to an integrated luminosity of 1fb(-1), collected with the LHCb detector, at a center-of-mass energy of 7 TeV. Combining our measured value of 1.010±0.010±0.008 for this ratio with the known B⁰ lifetime, we determine the flavor-specific Bs⁰ lifetime to be tau(Bs⁰ )=1.535±0.015±0.014ps, where the uncertainties are statistical and systematic, respectively. This is the most precise measurement to date, and is consistent with previous measurements and theoretical predictions.
| Titolo: | Measurement of the Bs⁰ meson lifetime in Ds⁺pi⁻ decays |
| Autori: | |
| Data di pubblicazione: | 2014 |
| Rivista: | |
| Abstract: | We present a measurement of the ratio of the Bs⁰ meson lifetime, in the flavor-specific decay to Ds⁺pi⁻, to that of the B⁰ meson. The pp collision data used correspond to an integrated luminosity of 1fb(-1), collected with the LHCb detector, at a center-of-mass energy of 7 TeV. Combining our measured value of 1.010±0.010±0.008 for this ratio with the known B⁰ lifetime, we determine the flavor-specific Bs⁰ lifetime to be tau(Bs⁰ )=1.535±0.015±0.014ps, where the uncertainties are statistical and systematic, respectively. This is the most precise measurement to date, and is consistent with previous measurements and theoretical predictions. |
| Handle: | http://hdl.handle.net/11384/59622 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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