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Mean lifetime of theB s 0 meson

1996 
This paper presents an update of the measurement of the mean lifetime of theB s 0 meson. CombiningD s−l,D s−h,φ−l and inclusiveD s final states from the 3.2 million hadronic Z decays collected by DELPHI between 1991 and 1994, theB s 0 mean lifetime was measured to be:τ(B s 0 )=1.67±0.14 ps.
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