The lifetimes of the B- and (B) over bar(0) mesons are measured using the partially reconstructed semileptonic decays (B) over bar --> Dl(-)<(nu)over bar>X, where D is either a D-0 or D*(+) meson. The data were collected by the CDF detector at the Fermilab Tevatron collider during 1992-1993 and correspond to 19.3 pb(-1) of <(p)over bar p> collisions at root s = 1.8 TeV. We measure the decay length distributions and find the lifetimes to be tau(B-)= 1.56 +/- 0.13 +/- 0.06 ps and tau(($) over bar(0)) = 1.54 +/- 0.08 +/- 0.06 ps, and the ratio of lifetimes to be tau(B-)/tau((B) over bar(0)) = 1.01 +/- 0.11 +/- 0.02, where the first uncertainties are statistical and the second are systematic.

F., A., H., A., A., A., M. G., A., S. R., A., D., A., et al. (1996). Measurement of the B- and (B)over-bar(0) meson lifetimes using semileptonic decays. PHYSICAL REVIEW LETTERS, 76(24), 4462-4467 [10.1103/PhysRevLett.76.4462].

Measurement of the B- and (B)over-bar(0) meson lifetimes using semileptonic decays

PAOLETTI, RICCARDO;
1996-01-01

Abstract

The lifetimes of the B- and (B) over bar(0) mesons are measured using the partially reconstructed semileptonic decays (B) over bar --> Dl(-)<(nu)over bar>X, where D is either a D-0 or D*(+) meson. The data were collected by the CDF detector at the Fermilab Tevatron collider during 1992-1993 and correspond to 19.3 pb(-1) of <(p)over bar p> collisions at root s = 1.8 TeV. We measure the decay length distributions and find the lifetimes to be tau(B-)= 1.56 +/- 0.13 +/- 0.06 ps and tau(($) over bar(0)) = 1.54 +/- 0.08 +/- 0.06 ps, and the ratio of lifetimes to be tau(B-)/tau((B) over bar(0)) = 1.01 +/- 0.11 +/- 0.02, where the first uncertainties are statistical and the second are systematic.
1996
F., A., H., A., A., A., M. G., A., S. R., A., D., A., et al. (1996). Measurement of the B- and (B)over-bar(0) meson lifetimes using semileptonic decays. PHYSICAL REVIEW LETTERS, 76(24), 4462-4467 [10.1103/PhysRevLett.76.4462].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/38954
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