The B(0)-(B)over bar (0) average mixing parameter <(chi)over bar> and b forward-backward asymmetry A(FB)(0)(b) are measured from a sample of about 4200000 Z-->q(q)over bar events recorded with the ALEPH detector at LEP in the years 1990-1995. High transverse momentum electrons and muons produced in b semileptonic decays provide the tag of the quark flavour and of its charge. The average mixing parameter and the pole b asymmetry are measured to be <(chi)over bar>=0.1246+/-0.0051(stat)+/-0.0052(syst), A(FB)(0)(b)=0.1008+/-0.0043(stat)+/-0.0028(syst). The value of sin(2) theta(W)(eff)=0.23198+/-0.00092 is extracted from the asymmetry measurement.

D., B., I., D., D., D., P., G., C., G., J. P., L., et al. (1996). Measurement of the b forward-backward asymmetry and mixing using high p(T) leptons. PHYSICS LETTERS. SECTION B, 384, 414-426 [10.1016/0370-2693(96)00926-4].

Measurement of the b forward-backward asymmetry and mixing using high p(T) leptons

CIOCCI, MARIA AGNESE;MARROCCHESI, PIER SIMONE;
1996-01-01

Abstract

The B(0)-(B)over bar (0) average mixing parameter <(chi)over bar> and b forward-backward asymmetry A(FB)(0)(b) are measured from a sample of about 4200000 Z-->q(q)over bar events recorded with the ALEPH detector at LEP in the years 1990-1995. High transverse momentum electrons and muons produced in b semileptonic decays provide the tag of the quark flavour and of its charge. The average mixing parameter and the pole b asymmetry are measured to be <(chi)over bar>=0.1246+/-0.0051(stat)+/-0.0052(syst), A(FB)(0)(b)=0.1008+/-0.0043(stat)+/-0.0028(syst). The value of sin(2) theta(W)(eff)=0.23198+/-0.00092 is extracted from the asymmetry measurement.
1996
D., B., I., D., D., D., P., G., C., G., J. P., L., et al. (1996). Measurement of the b forward-backward asymmetry and mixing using high p(T) leptons. PHYSICS LETTERS. SECTION B, 384, 414-426 [10.1016/0370-2693(96)00926-4].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/38574
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