par Acosta, Darin E.;De Lentdecker, Gilles 
; [et al.]
Référence Physical review letters, 94, 10, page (1-7), 101803
Publication Publié, 2005
; [et al.]Référence Physical review letters, 94, 10, page (1-7), 101803
Publication Publié, 2005
Article révisé par les pairs
| Résumé : | We present measurements of the lifetimes and polarization amplitudes for Bs 0 → J/ψφ and Bd 0 → J/ψK*0 decays. Lifetimes of the heavy and light mass eigenstates in the Bs 0 system are separately measured for the first time by determining the relative contributions of amplitudes with definite CP as a function of the decay time. Using 203 ± 15 B s 0 decays we obtain τL = (1.05 -0.13 +0.16 ± 0.02) ps and τH = (2.07-0.46 +0.58 ± 0.03) ps. Expressed in terms of the difference ΔΓs and average Γs, of the decay rates of the two eigenstates, the results areΔΓ s/Γs = (65-33 +25 ± 1)% and ΔΓs = (0.47-0.24 +0.19 ± 0.01) ps-1. © 2005 The American Physical Society. |
