Inclusive π±, K± and (p, p̄) production is investigated using data recorded by the ALEPH detector between 1992 and 1994. The momentum spectra and multiplicities are measured separately in Z → bb̄, Z → cc̄ and Z → uū, dd̄, ss̄ decays. The number of protons found in b-hadron decays is used to estimate the fraction of b-baryons in b events to be (10.2 ± 0.7 ± 2.7)% assuming BR(b-baryon→ pX) = (58 ± 6)%. From an additional study of proton-lepton correlations in b events, the branching ratio BR(b-baryon → plv̄X) = (4.63 ± 0.72 ± 0.98)% is obtained. The ratio BR(b-baryon → plv̄X)/BR(b-baryon → pX) is found to be 0.080 ± 0.012 ± 0.014.

Barate, R., Buskulic, D., Decamp, D., Ghez, P., Goy, C., Lees, J., et al. (1998). A measurement of the semileptonic branching ratio BR(b-baryon → plv̄X) and a study of inclusive π±, K±, (p, p̄) production in Z decays. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 5(2), 205-227 [10.1007/s100520050263].

A measurement of the semileptonic branching ratio BR(b-baryon → plv̄X) and a study of inclusive π±, K±, (p, p̄) production in Z decays

CARPINELLI, Massimo;
1998

Abstract

Inclusive π±, K± and (p, p̄) production is investigated using data recorded by the ALEPH detector between 1992 and 1994. The momentum spectra and multiplicities are measured separately in Z → bb̄, Z → cc̄ and Z → uū, dd̄, ss̄ decays. The number of protons found in b-hadron decays is used to estimate the fraction of b-baryons in b events to be (10.2 ± 0.7 ± 2.7)% assuming BR(b-baryon→ pX) = (58 ± 6)%. From an additional study of proton-lepton correlations in b events, the branching ratio BR(b-baryon → plv̄X) = (4.63 ± 0.72 ± 0.98)% is obtained. The ratio BR(b-baryon → plv̄X)/BR(b-baryon → pX) is found to be 0.080 ± 0.012 ± 0.014.
Articolo in rivista - Articolo scientifico
Physics
English
1998
5
2
205
227
none
Barate, R., Buskulic, D., Decamp, D., Ghez, P., Goy, C., Lees, J., et al. (1998). A measurement of the semileptonic branching ratio BR(b-baryon → plv̄X) and a study of inclusive π±, K±, (p, p̄) production in Z decays. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 5(2), 205-227 [10.1007/s100520050263].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/390133
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