The lifetime of the B-S(o) meson is measured using the semileptonic decay B-s(o)-->D(s)(-)l(+) nu X. The data sample consists of about 110 pb(-1) of p (p) over bar collisions at root s = 1.8 TeV collected by the CDF detector at Fermilab. Four different D-s(-) decay modes are reconstructed resulting in approximately 600 D(s)(-)l(+) signal events. The B-s(o) meson lifetime is determined to be tau(B-s(o))=(1.36+/-0.09(-0.05)(+0.06))) ps, where the first and second uncertainties are statistical and systematic, respectively. The B-s(o) mason decay length distribution is examined far a lifetime difference Delta Gamma/Gamma between the two mass eigenstates of the B-s(o) mason. An upper limit of Delta Gamma/Gamma <0.83 is set at the 95% confidence level. [S0556-2821(99)01103-0].

Measurement of the B-S(0) meson lifetime using semileptonic decays

INTROZZI, GIANLUCA;
1999-01-01

Abstract

The lifetime of the B-S(o) meson is measured using the semileptonic decay B-s(o)-->D(s)(-)l(+) nu X. The data sample consists of about 110 pb(-1) of p (p) over bar collisions at root s = 1.8 TeV collected by the CDF detector at Fermilab. Four different D-s(-) decay modes are reconstructed resulting in approximately 600 D(s)(-)l(+) signal events. The B-s(o) meson lifetime is determined to be tau(B-s(o))=(1.36+/-0.09(-0.05)(+0.06))) ps, where the first and second uncertainties are statistical and systematic, respectively. The B-s(o) mason decay length distribution is examined far a lifetime difference Delta Gamma/Gamma between the two mass eigenstates of the B-s(o) mason. An upper limit of Delta Gamma/Gamma <0.83 is set at the 95% confidence level. [S0556-2821(99)01103-0].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11571/577538
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