Lifetime Difference andCP-Violating Phase in theBs0System

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Lifetime difference and CP-violating phase in the Bs0 system.

From an analysis of the decay Bs0-->J/psi phi, we obtain the width difference between the light and heavy mass eigenstates DeltaGamma identical with (GammaL-GammaH)=0.17+/-0.09(stat)+/-0.02(syst) ps-1 and the CP-violating phase phis=-0.79+/-0.56(stat)(-0.01)(+0.14)(syst). Under the hypothesis of no CP violation (phis identical with 0), we obtain 1/Gamma=tau(Bs0)=1.52+/-0.08(stat)(-0.03)(+0.01)(...

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ژورنال

عنوان ژورنال: Physical Review Letters

سال: 2007

ISSN: 0031-9007,1079-7114

DOI: 10.1103/physrevlett.98.121801