An improved measurement of the average lifetime of b hadrons has been performed with the ALEPH detector. From a sample of 260000 hadronic Z0 decays, recorded during the 1991 LEP run with the silicon vertex detector fully operational, a fit to the impact parameter distribution of lepton tracks coming from semileptonic decays yields an average b hadron lifetime of 1.49 +/- 0.03 +/- 0.06 ps.

Updated measurement of the average b hadron lifetime / 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., Mattison, T., Pacheco, A., Pascual, A., Creanza, D., de Palma, M., Farilla, A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 295:1-2(1992), pp. 174-186. [10.1016/0370-2693(92)90108-G]

Updated measurement of the average b hadron lifetime

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

Abstract

An improved measurement of the average lifetime of b hadrons has been performed with the ALEPH detector. From a sample of 260000 hadronic Z0 decays, recorded during the 1991 LEP run with the silicon vertex detector fully operational, a fit to the impact parameter distribution of lepton tracks coming from semileptonic decays yields an average b hadron lifetime of 1.49 +/- 0.03 +/- 0.06 ps.
1992
Updated measurement of the average b hadron lifetime / 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., Mattison, T., Pacheco, A., Pascual, A., Creanza, D., de Palma, M., Farilla, A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 295:1-2(1992), pp. 174-186. [10.1016/0370-2693(92)90108-G]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/938
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