F. Abe et al., MEASUREMENT OF THE LIFETIME OF THE B-S(0) MESON USING THE EXCLUSIVE DECAY MODE B-S(0)-]J PSI-PHI/, Physical review letters, 77(10), 1996, pp. 1945-1949
The lifetime of the B-s(0) meson is measured using the exclusive decay
mode B-s(0) --> J/psi phi, where J/psi --> mu(+)mu(-) and phi --> K+K
-. The data sample consists of 110 pb(-1) of <p(p)over bar> collisions
at root S = 1.8 TeV, collected by the CDF detector at the Fermilab Te
vatron collider during 1992-1995. We find 58 +/- 12 signal events, and
the B-s(0) meson lifetime is determined to be tau(Bs0) = 1.34(-0.19)(
+0.23)(stat) +/- 0.05(syst) ps. This result is consistent with previou
s measurements of the B-s(0), B+, and B-d(0) meson lifetimes and with
theoretical predictions.