The Lambda(b) polarization in hadronic Z decays is measured in semileptonic decays from the average energies of the charged lepton and the neutrino. In a data sample of approximately 3 million hadronic Z decays collected by the ALEPH detector at LEP between 1991 and 1994, 462 +/- 31 Lambda(b) candidates are selected using (Lambda pi(+))-lepton correlations. From this event sample, the Lambda(b) polarization is measured to be P-Lambda(b) = -0.23(-0.20)(+0.24)(stat.)(-0.07)(+0.08)(syst.).

D., B., D., C., I., D., D., D., P., G., C., C., et al. (1996). Measurement of the Lambda(b) polarization in Z decays. PHYSICS LETTERS. SECTION B, 365, 437-447 [10.1016/0370-2693(95)01433-0].

Measurement of the Lambda(b) polarization in Z decays

CIOCCI, MARIA AGNESE;MARROCCHESI, PIER SIMONE;
1996-01-01

Abstract

The Lambda(b) polarization in hadronic Z decays is measured in semileptonic decays from the average energies of the charged lepton and the neutrino. In a data sample of approximately 3 million hadronic Z decays collected by the ALEPH detector at LEP between 1991 and 1994, 462 +/- 31 Lambda(b) candidates are selected using (Lambda pi(+))-lepton correlations. From this event sample, the Lambda(b) polarization is measured to be P-Lambda(b) = -0.23(-0.20)(+0.24)(stat.)(-0.07)(+0.08)(syst.).
1996
D., B., D., C., I., D., D., D., P., G., C., C., et al. (1996). Measurement of the Lambda(b) polarization in Z decays. PHYSICS LETTERS. SECTION B, 365, 437-447 [10.1016/0370-2693(95)01433-0].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/38134
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