A search for CP violating effects in the mixing of neutral B mesons is performed using a sample of 4.1 million hadronic Z decays collected with the ALEPH detector from 1991 to 1995. By studying time-dependent asymmetries in flavour-tagged samples of semileptonic and fully inclusive b-hadron decays, two measurements of the semileptonic asymmetry acp are extracted. No evidence for CP violation is observed, and the combined value a(CP) = -0.013 +/- 0.026 is obtained.

Investigation of inclusive CP asymmetries in B-0 decays / Barate, R., Decamp, D., Ghez, P., Goy, C., Lees, J.p., Merle, E., Minard, M.n., Pietrzyk, B., Bravo, S., Casado, M.p., Chmeissani, M., Crespo, J.m., Fernandez, E., Fernandez Bosman, M., Garrido, L., Grauges, E., Martinez, M., Merino, G., Miquel, R., Mir, L.n., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - STAMPA. - 20:3(2001), pp. 431-443. [10.1007/s100520100644]

Investigation of inclusive CP asymmetries in B-0 decays

CREANZA, Donato Maria;IASELLI, Giuseppe;MAGGI, Giorgio Pietro;
2001

Abstract

A search for CP violating effects in the mixing of neutral B mesons is performed using a sample of 4.1 million hadronic Z decays collected with the ALEPH detector from 1991 to 1995. By studying time-dependent asymmetries in flavour-tagged samples of semileptonic and fully inclusive b-hadron decays, two measurements of the semileptonic asymmetry acp are extracted. No evidence for CP violation is observed, and the combined value a(CP) = -0.013 +/- 0.026 is obtained.
2001
Investigation of inclusive CP asymmetries in B-0 decays / Barate, R., Decamp, D., Ghez, P., Goy, C., Lees, J.p., Merle, E., Minard, M.n., Pietrzyk, B., Bravo, S., Casado, M.p., Chmeissani, M., Crespo, J.m., Fernandez, E., Fernandez Bosman, M., Garrido, L., Grauges, E., Martinez, M., Merino, G., Miquel, R., Mir, L.n., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - STAMPA. - 20:3(2001), pp. 431-443. [10.1007/s100520100644]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/1703
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