We present measurements of the lifetimes and polarization amplitudes for Bs(0)-> J/psi phi and Bd(0)-> J/psi K*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 Bs(0) decays we obtain tau(L)=(1.05(-0.13)(+0.16)+/- 0.02) ps and tau(H)=(2.07(-0.46)(+0.58)+/- 0.03) ps. Expressed in terms of the difference Delta Gamma(s) and average Gamma(s), of the decay rates of the two eigenstates, the results are Delta Gamma(s)/Gamma(s)=(65(-33)(+25)+/- 1)% and Delta Gamma(s)=(0.47(-0.24)(+0.19)+/- 0.01) ps(-1).

D., A., J., A., T., A., T., A., M. G., A., D., A., et al. (2005). Measurement of the lifetime difference between Bs mass eigenstates. PHYSICAL REVIEW LETTERS, 94(10), 101803-1-101803-7 [10.1103/PhysRevLett.94.101803].

Measurement of the lifetime difference between Bs mass eigenstates

CIOCCI, MARIA AGNESE;
2005-01-01

Abstract

We present measurements of the lifetimes and polarization amplitudes for Bs(0)-> J/psi phi and Bd(0)-> J/psi K*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 Bs(0) decays we obtain tau(L)=(1.05(-0.13)(+0.16)+/- 0.02) ps and tau(H)=(2.07(-0.46)(+0.58)+/- 0.03) ps. Expressed in terms of the difference Delta Gamma(s) and average Gamma(s), of the decay rates of the two eigenstates, the results are Delta Gamma(s)/Gamma(s)=(65(-33)(+25)+/- 1)% and Delta Gamma(s)=(0.47(-0.24)(+0.19)+/- 0.01) ps(-1).
2005
D., A., J., A., T., A., T., A., M. G., A., D., A., et al. (2005). Measurement of the lifetime difference between Bs mass eigenstates. PHYSICAL REVIEW LETTERS, 94(10), 101803-1-101803-7 [10.1103/PhysRevLett.94.101803].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/37506
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