The first measurement of the effective lifetime of the anti-B0s meson in the decay anti-B0s → Ds− Ds+ is reported using a proton-proton collision data set, corresponding to an integrated luminosity of 3 fb^−1, collected by the LHCb experiment. The measured value of the anti-B0s → Ds− Ds+ effective lifetime is 1.379 ± 0.026 ± 0.017 ps, where the uncertainties are statistical and systematic, respectively. This lifetime translates into a measurement of the decay width of the light anti-B0s mass eigenstate of Γ_L = 0.725 ± 0.014 ± 0.009 ps^−1. The anti-B0s lifetime is also measured using the flavor-specific anti-B0s → D− Ds+ decay to be 1.52 ± 0.15 ± 0.01 ps.

R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, J. Albrecht, et al. (2014). Measurement of the anti-B0s → Ds− Ds+ and anti-B0s → D− Ds+ Effective Lifetimes. PHYSICAL REVIEW LETTERS, 112(11), 1-9 [10.1103/PhysRevLett.112.111802].

Measurement of the anti-B0s → Ds− Ds+ and anti-B0s → D− Ds+ Effective Lifetimes

CARBONE, ANGELO;GALLI, DOMENICO;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZANGOLI, MARIA;
2014

Abstract

The first measurement of the effective lifetime of the anti-B0s meson in the decay anti-B0s → Ds− Ds+ is reported using a proton-proton collision data set, corresponding to an integrated luminosity of 3 fb^−1, collected by the LHCb experiment. The measured value of the anti-B0s → Ds− Ds+ effective lifetime is 1.379 ± 0.026 ± 0.017 ps, where the uncertainties are statistical and systematic, respectively. This lifetime translates into a measurement of the decay width of the light anti-B0s mass eigenstate of Γ_L = 0.725 ± 0.014 ± 0.009 ps^−1. The anti-B0s lifetime is also measured using the flavor-specific anti-B0s → D− Ds+ decay to be 1.52 ± 0.15 ± 0.01 ps.
2014
R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, J. Albrecht, et al. (2014). Measurement of the anti-B0s → Ds− Ds+ and anti-B0s → D− Ds+ Effective Lifetimes. PHYSICAL REVIEW LETTERS, 112(11), 1-9 [10.1103/PhysRevLett.112.111802].
R. Aaij; B. Adeva; M. Adinolfi; A. Affolder; Z. Ajaltouni; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P. Alvarez Cartelle; A.A. Alves...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/256524
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