Results on B0-B0 mixing in e+e- annihilation at LEP are reported. A new method is used, where the charge of one b quark is tagged by a high-p, high-p⊥ electron or muon, and the charge of the other is extracted from the momentum-weighted average of the charges of jet fragments. Based on the analysis of 180 000 hadronic Z decays produced in the ALEPH detector, {cauchy integral}dχd+0.72{cauchy integral}sχs=0.113±0.018(stat.)± 0.027(syst.) is obtained. Combining this result with the ALEPH dipleton measurement yields χ=0.129±0.022.

Buskulic, D., Decamp, D., Goy, C., Lees, J., Minard, M., Mours, B., et al. (1992). Measurement of B-B mixing at the Z using a jet-charge method. PHYSICS LETTERS. SECTION B, 284(1-2), 177-190 [10.1016/0370-2693(92)91943-4].

Measurement of B-B mixing at the Z using a jet-charge method

CARPINELLI, Massimo;
1992

Abstract

Results on B0-B0 mixing in e+e- annihilation at LEP are reported. A new method is used, where the charge of one b quark is tagged by a high-p, high-p⊥ electron or muon, and the charge of the other is extracted from the momentum-weighted average of the charges of jet fragments. Based on the analysis of 180 000 hadronic Z decays produced in the ALEPH detector, {cauchy integral}dχd+0.72{cauchy integral}sχs=0.113±0.018(stat.)± 0.027(syst.) is obtained. Combining this result with the ALEPH dipleton measurement yields χ=0.129±0.022.
Articolo in rivista - Articolo scientifico
LEP;
English
1992
284
1-2
177
190
none
Buskulic, D., Decamp, D., Goy, C., Lees, J., Minard, M., Mours, B., et al. (1992). Measurement of B-B mixing at the Z using a jet-charge method. PHYSICS LETTERS. SECTION B, 284(1-2), 177-190 [10.1016/0370-2693(92)91943-4].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/390428
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