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Article Dans Une Revue Physical Review Letters Année : 2012

Measurement of the Bs effective lifetime in the J/psi fo(980) final state

R. Aaij
  • Fonction : Auteur
J. He
J. Cogan
O. Leroy
J. Serrano

Résumé

The effective lifetime of the Bs meson in the decay mode Bs->J/\psi fo(980) is measured using 1.0/fb of data collected in pp collisions at sqrt(s) = 7 TeV with the LHCb detector. The result is 1.700 +/- 0.040 +/- 0.026 ps where the first uncertainty is statistical and the second systematic. As the final state is CP-odd, and CP violation in this mode is measured to be small, the lifetime measurement can be translated into a measurement of the decay width of the heavy Bs mass eigenstate, \Gamma_H = (0.588 +/- 0.014 +/- 0.009)/ps.
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Dates et versions

in2p3-00714752 , version 1 (07-09-2023)

Identifiants

Citer

R. Aaij, S. Barsuk, O. Callot, J. He, B. Jean-Marie, et al.. Measurement of the Bs effective lifetime in the J/psi fo(980) final state. Physical Review Letters, 2012, 109, pp.152002. ⟨10.1103/PhysRevLett.109.152002⟩. ⟨in2p3-00714752⟩
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