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Measurement of the Lifetime Difference between Bs Mass Eigenstates

CollaborationWith : Campanelli, Mario / Clark, Allan Geoffrey / Donega, Mauro / D'Onofrio, Monica / Lister, Alison / Liu, Yanwen / Wu, Xin / Zsenei, Andras
Published in Physical Review Letters. 2005, vol. 94, no. 10, p. 101803
Abstract We present measurements of the lifetimes and polarization amplitudes for B0s→J/ψϕ and B0d→J/ψK*0 decays. Lifetimes of the heavy and light mass eigenstates in the B0s 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 B0s decays we obtain τL=(1.05+0.16−0.13±0.02)  ps and τH=(2.07+0.58−0.46±0.03)  ps. Expressed in terms of the difference ΔΓs and average Γs, of the decay rates of the two eigenstates, the results are ΔΓs/Γs=(65+25−33±1)% and ΔΓs=(0.47+0.19−0.24±0.01)   ps−1
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CDF COLLABORATION. Measurement of the Lifetime Difference between Bs Mass Eigenstates. In: Physical Review Letters, 2005, vol. 94, n° 10, p. 101803. https://archive-ouverte.unige.ch/unige:38098

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Deposited on : 2014-06-24

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