The B-0-(B) over bar (0) oscillation frequency has been measured with a sample of 23x10(6) B (B) over bar pairs collected with the BABAR detector at the PEP-II asymmetric B Factory at SLAC. In this sample, we select events in which both B mesons decay semileptonically and use the charge of the leptons to identify the flavor of each B meson. A simultaneous fit to the decay time difference distributions for opposite- and same-sign dilepton events gives Deltam(d)=0.493+/-0.012(stat )+/-0.009(syst) ps(-1) .

Measurement of the B-0-(B)over-bar(0) oscillation frequency with inclusive dilepton events / B., A., D., B., J. M., G., A., H., Y., K., J. P., L., P., R., V., T., A., P., A., P., G. P., C., J. C., C., N. D., Q.i., G., R., P., W., Y. S., Z., G., E., B., S., G. S., A., A. W., B., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 88:(2002), p. 221803. [10.1103/physrevlett.88.221803]

Measurement of the B-0-(B)over-bar(0) oscillation frequency with inclusive dilepton events

RAHATLOU, SHAHRAM;CAVOTO, Gianluca;DEL RE, Daniele;FACCINI, Riccardo;FERRONI, Fernando;C. Voena;
2002

Abstract

The B-0-(B) over bar (0) oscillation frequency has been measured with a sample of 23x10(6) B (B) over bar pairs collected with the BABAR detector at the PEP-II asymmetric B Factory at SLAC. In this sample, we select events in which both B mesons decay semileptonically and use the charge of the leptons to identify the flavor of each B meson. A simultaneous fit to the decay time difference distributions for opposite- and same-sign dilepton events gives Deltam(d)=0.493+/-0.012(stat )+/-0.009(syst) ps(-1) .
2002
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the B-0-(B)over-bar(0) oscillation frequency with inclusive dilepton events / B., A., D., B., J. M., G., A., H., Y., K., J. P., L., P., R., V., T., A., P., A., P., G. P., C., J. C., C., N. D., Q.i., G., R., P., W., Y. S., Z., G., E., B., S., G. S., A., A. W., B., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 88:(2002), p. 221803. [10.1103/physrevlett.88.221803]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/458142
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