We have measured the time integrated B0-BBAR0 mixing parameter and the forward-backward asymmetry in the process e+e- --> bbBAR using hadronic events containing muons or electrons. The data sample corresponds to 1,044,000 hadronic decays of the Z. From a fit to the momentum and transverse momentum distributions for single lepton and dilepton events, we have determined the B0-BBAR0 mixing parameter to be chi(B) = 0.123 +/- 0.012 (stat.) +/- 0.008 (sys.), and the bbBAR forward-backward asymmetry at the effective center-of-mass energy square-root s = 91.30 GeV to be A(bbBAR) = 0.087 +/- 0.011 (stat.) +/- 0.004 (sys.) This measurement corresponds to a value of the effective electroweak mixing angle of sin2thetaBAR(w) = 0.2335 +/- 0.0021.

Measurement of the B(0)-(b)over-bar(0) Mixing Parameter and the Z-]b(b)over-bar Forward-backward Asymmetry / M. ACCIARRI, A. ADAM, O. ADRIANI, M. AGUILARBENITEZ, S. AHLEN, J. ALCARAZ, A. ALOISIO, G. ALVERSON, M. G. ALVIGGI, G. AMBROSI, Q. AN, H. ANDERHUB, A. L. ANDERSON, V. P. ANDREEV, T. ANGELESCU, L. ANTONOV, D. ANTREASYAN, G. ALKHAZOV, P. ARCE, A. AREFIEV, et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 335:(1994), pp. 542-553. [10.1016/0370-2693(94)90391-3]

Measurement of the B(0)-(b)over-bar(0) Mixing Parameter and the Z-]b(b)over-bar Forward-backward Asymmetry

ADRIANI, OSCAR;D'ALESSANDRO, RAFFAELLO;M. LENTI;
1994

Abstract

We have measured the time integrated B0-BBAR0 mixing parameter and the forward-backward asymmetry in the process e+e- --> bbBAR using hadronic events containing muons or electrons. The data sample corresponds to 1,044,000 hadronic decays of the Z. From a fit to the momentum and transverse momentum distributions for single lepton and dilepton events, we have determined the B0-BBAR0 mixing parameter to be chi(B) = 0.123 +/- 0.012 (stat.) +/- 0.008 (sys.), and the bbBAR forward-backward asymmetry at the effective center-of-mass energy square-root s = 91.30 GeV to be A(bbBAR) = 0.087 +/- 0.011 (stat.) +/- 0.004 (sys.) This measurement corresponds to a value of the effective electroweak mixing angle of sin2thetaBAR(w) = 0.2335 +/- 0.0021.
1994
335
542
553
M. ACCIARRI;A. ADAM;O. ADRIANI;M. AGUILARBENITEZ;S. AHLEN;J. ALCARAZ;A. ALOISIO;G. ALVERSON;M. G. ALVIGGI;G. AMBROSI;Q. AN;H. ANDERHUB;A. ...espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/772805
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