Results on B0-BBAR0 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(perpendicular-to) 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 180000 hadronic Z decays produced in the ALEPH detector, f(d-chi-d) + 0.72f(s-chi-s) = 0.113 +/- 0.018 (stat.) +/- 0.027 (syst.) is obtained. Combining this result with the ALEPH dilepton measurement yields chi = 0.129 +/- 0.022.

Measurement of B- overlineB mixing at the Z using a jet-charge method / Buskulic, D., Decamp, D., Goy, C., Lees, J.-P., Minard, M.-N., Mours, B., Alemany, R., Ariztizabal, F., Comas, P., Crespo, J.M., Delfino, M., Fernandez, E., Gaitan, V., Garrido, Ll., Mir, Ll.M., Pacheco, A., Pascual, A., Creanza, D., de Palma, M., Farilla, A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 284:1-2(1992), pp. 177-190. [10.1016/0370-2693(92)91943-4]

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

Creanza, D.;Iaselli, G.;Maggi, G.;
1992

Abstract

Results on B0-BBAR0 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(perpendicular-to) 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 180000 hadronic Z decays produced in the ALEPH detector, f(d-chi-d) + 0.72f(s-chi-s) = 0.113 +/- 0.018 (stat.) +/- 0.027 (syst.) is obtained. Combining this result with the ALEPH dilepton measurement yields chi = 0.129 +/- 0.022.
1992
Measurement of B- overlineB mixing at the Z using a jet-charge method / Buskulic, D., Decamp, D., Goy, C., Lees, J.-P., Minard, M.-N., Mours, B., Alemany, R., Ariztizabal, F., Comas, P., Crespo, J.M., Delfino, M., Fernandez, E., Gaitan, V., Garrido, Ll., Mir, Ll.M., Pacheco, A., Pascual, A., Creanza, D., de Palma, M., Farilla, A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 284:1-2(1992), pp. 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/11589/1461
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