The lifetime of the B(s)0 has been measured in a data sample of 889000 hadronic events recorded with the ALEPH detector at LEP. After background subtraction 30.8 +/- 6.9 events are attributed to the semileptonic decay of the B(s)0 to a D(s)- and an opposite-sign lepton. A maximum-likelihood fit to the distribution of the proper times of these events yields a B(s)0 lifetime of tau(B)s = 1.92 (-0.35)+0.45 +/- 0.04 ps.
Measurement of the B(s)0 Lifetime
G. BATIGNANI;CIOCCI, MARIA AGNESE;FERRANTE, ISIDORO;MESSINEO, ALBERTO MARIA;TONELLI, GUIDO EMILIO;G. TRIGGIANI;
1994-01-01
Abstract
The lifetime of the B(s)0 has been measured in a data sample of 889000 hadronic events recorded with the ALEPH detector at LEP. After background subtraction 30.8 +/- 6.9 events are attributed to the semileptonic decay of the B(s)0 to a D(s)- and an opposite-sign lepton. A maximum-likelihood fit to the distribution of the proper times of these events yields a B(s)0 lifetime of tau(B)s = 1.92 (-0.35)+0.45 +/- 0.04 ps.File in questo prodotto:
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