@article{29b82f8147dd476dabadbd0e0de50ef2,
title = "Measurement of heavy quark forward-backward asymmetries and average B mixing using leptons in multihadronic events",
abstract = "A measurement of the forward-backward asymmetries of e+e-→Z0→bb and e+e-->Z°→c{\=c} using electrons and muons produced in semileptonic decays of bottom and charm hadrons is presented. Two new variables designed to optimize flavour separation are used in a maximum likelihood fit to a sample of events containing one or two identified leptons, allowing the simultaneous extraction of the b and c quark forward-backward asymmetries as well as the average B°-B° mixing. Using all data collected by OPAL up to the end of 1994, the asymmetries are measured to be: AFB b = ( 5.5±2.4 ±0.3 )% AFB b = (-7.5±3.4 ±0.6 )% at (√s) = 89.52 GeV, AFB b = (9.06±0.51±0.23)% AFB b= ( 6.00±0.67±0.52)7c at (√s) = 91.24 GeV, AFB b =(11.7±2.0 ±0.3 )% AFB b =( 14.l±2.8 ±0.9 )% at (√s) = 92.94 GeV. For the average B°-B° mixing a value of: X = 0.1107 ±0.0062 ±0.0055, is obtained, where in each case the first error is statistical and the second systematic.",
author = "{The OPAL Collaboration} and G. Alexander and J. Allison and N. Altekamp and K. Ametewee and Anderson, {K. J.} and S. Anderson and S. Arcelli and S. Asai and D. Axen and G. Azuelos and Ball, {A. H.} and E. Barberio and Barlow, {R. J.} and R. Bartoldus and Batley, {J. R.} and G. Beaudoin and J. Bechtluft and Beck, {G. A.} and C. Beeston and T. Behnke and Bell, {A. N.} and Bell, {K. W.} and G. Bella and S. Bentvelsen and P. Berlich and S. Bethke and O. Biebel and Bloodworth, {I. J.} and Bloomer, {J. E.} and P. Bock and Bosch, {H. M.} and M. Boutemeur and Bouwens, {B. T.} and S. Braibant and P. Bright-Thomas and Brown, {R. M.} and Burckhart, {H. J.} and C. Burgard and R. Burgin and P. Capiluppi and Carnegie, {R. K.} and Carter, {A. A.} and Carter, {J. R.} and Chang, {C. Y.} and C. Charlesworth and Charlton, {D. G.} and D. Chrisman and Chu, {S. L.} and Clarke, {P. E.L.} and S. Komamiya",
year = "1996",
doi = "10.1007/s002880050114",
language = "English",
volume = "70",
pages = "357--369",
journal = "Zeitschrift fur Physik C-Particles and Fields",
issn = "0170-9739",
publisher = "Springer New York",
number = "3",
}