In a data sample of four million hadronic Z decays collected with the ALEPH detector at LEP, four Lambda(b) baryon candidates are exclusively reconstructed in the Lambda(b) --> Lambda(c)(+) pi(-) channel, with the Lambda(c)(+) decaying into pK(-) pi(+), p(K)over bar (0) or Lambda pi(+) pi(+) pi(-). The probability of the observed signal to be due to a background fluctuation is estimated to be 4.2 x 10(-4). The mass of the Lambda(b) is measured to be 5614 +/- 21 (stat.) +/- 4 (syst.) MeV/c(2).

D., B., I., D., D., D., P., G., C., G., J. P., L., et al. (1996). Measurement of the mass of the Lambda(b) baryon. PHYSICS LETTERS. SECTION B, 380(3-4), 442-452 [10.1016/0370-2693(96)00659-4].

Measurement of the mass of the Lambda(b) baryon

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

Abstract

In a data sample of four million hadronic Z decays collected with the ALEPH detector at LEP, four Lambda(b) baryon candidates are exclusively reconstructed in the Lambda(b) --> Lambda(c)(+) pi(-) channel, with the Lambda(c)(+) decaying into pK(-) pi(+), p(K)over bar (0) or Lambda pi(+) pi(+) pi(-). The probability of the observed signal to be due to a background fluctuation is estimated to be 4.2 x 10(-4). The mass of the Lambda(b) is measured to be 5614 +/- 21 (stat.) +/- 4 (syst.) MeV/c(2).
1996
D., B., I., D., D., D., P., G., C., G., J. P., L., et al. (1996). Measurement of the mass of the Lambda(b) baryon. PHYSICS LETTERS. SECTION B, 380(3-4), 442-452 [10.1016/0370-2693(96)00659-4].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/38795
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