Time-dependent B-d(0)-(B) over bar(d)(0) mixing is studied using 1.5 million hadronic Z decays collected by L3. Semileptonic B decays are selected by requiring at least one reconstructed lepton in both thrust hemispheres. Charge correlations between the tagged leptons are studied as a function of proper time. The proper time of the b-hadron decay is measured by reconstructing the production and decay vertices using a silicon microvertex detector: The measured B-d(0) meson oscillation frequency corresponds to a mass difference Delta m(d) between the two B-d(0) mass eigenstates of Delta m(d) = (0.496(-0.051)(+0.053) (stat) +/- 0.043 (syst)) ps(-1).

Measurement of the B-d(0) meson oscillation frequency / M., A., O., A., M., A., S., A., B., A., J., A., G., A., J., A., A., A., G., A., M. G., A., G., A., H., A., V. P., A., T., A., D., A., A., A., T., A., T., A., Bagnaia, P., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 383:(1996), pp. 487-498. [10.1016/0370-2693(96)00768-X]

Measurement of the B-d(0) meson oscillation frequency

BAGNAIA, Paolo;FACCINI, Riccardo;GENTILE, Simonetta;GIAGU, Stefano;ORGANTINI, Giovanni;
1996

Abstract

Time-dependent B-d(0)-(B) over bar(d)(0) mixing is studied using 1.5 million hadronic Z decays collected by L3. Semileptonic B decays are selected by requiring at least one reconstructed lepton in both thrust hemispheres. Charge correlations between the tagged leptons are studied as a function of proper time. The proper time of the b-hadron decay is measured by reconstructing the production and decay vertices using a silicon microvertex detector: The measured B-d(0) meson oscillation frequency corresponds to a mass difference Delta m(d) between the two B-d(0) mass eigenstates of Delta m(d) = (0.496(-0.051)(+0.053) (stat) +/- 0.043 (syst)) ps(-1).
1996
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the B-d(0) meson oscillation frequency / M., A., O., A., M., A., S., A., B., A., J., A., G., A., J., A., A., A., G., A., M. G., A., G., A., H., A., V. P., A., T., A., D., A., A., A., T., A., T., A., Bagnaia, P., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 383:(1996), pp. 487-498. [10.1016/0370-2693(96)00768-X]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/472627
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