We present a measurement of the ratio of the anti-B0s meson lifetime, in the flavor-specific decay to Ds+ π−, to that of the anti-B0 meson. The pp collision data used correspond to an integrated luminosity of 1 fb^−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 anti-B0 lifetime, we determine the flavor-specific anti-B0s lifetime to be τ(anti-B0s) = 1.535 ± 0.015 ± 0.014 ps, 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.

R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, et al. (2014). Measurement of the anti-B0s Meson Lifetime in Ds+ π− Decays. PHYSICAL REVIEW LETTERS, 113(17), 1-9 [10.1103/PhysRevLett.113.172001].

Measurement of the anti-B0s Meson Lifetime in Ds+ π− Decays

CARBONE, ANGELO;GALLI, DOMENICO;MOGGI, NICCOLO';MUSSINI, MANUEL;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZANGOLI, MARIA;
2014

Abstract

We present a measurement of the ratio of the anti-B0s meson lifetime, in the flavor-specific decay to Ds+ π−, to that of the anti-B0 meson. The pp collision data used correspond to an integrated luminosity of 1 fb^−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 anti-B0 lifetime, we determine the flavor-specific anti-B0s lifetime to be τ(anti-B0s) = 1.535 ± 0.015 ± 0.014 ps, 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.
2014
R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, et al. (2014). Measurement of the anti-B0s Meson Lifetime in Ds+ π− Decays. PHYSICAL REVIEW LETTERS, 113(17), 1-9 [10.1103/PhysRevLett.113.172001].
R. Aaij; B. Adeva; M. Adinolfi; A. Affolder; Z. Ajaltouni; S. Akar; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P. Alvarez Cartelle; A...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/365517
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