NAGIOS: RODERIC FUNCIONANDO

Production of strange b-baryons decaying into xi-/+-l-/+ pairs at LEP

Repositori DSpace/Manakin

Valencià Castellano

Inici
Investigació
e-prints
22 - Física
Visualitza element

IMPORTANT: Aquest repositori està en una versió antiga des del 3/12/2023. La nova instal.lació está en https://roderic.uv.es/

Production of strange b-baryons decaying into xi-/+-l-/+ pairs at LEP

Mostra el registre parcial de l'element

dc.contributor.author	DELPHI Collaboration
dc.contributor.author	Castillo Giménez, María Victoria
dc.contributor.author	Ferrer Soria, Antonio
dc.contributor.author	Higón Rodríguez, Emilio
dc.contributor.author	Chrin, J. T. M.
dc.contributor.author	Cortina Gil, Eduardo
dc.contributor.author	Fuster Verdú, Juan A.
dc.contributor.author	García García, Carmen
dc.contributor.author	Gómez Cadenas, Juan José
dc.contributor.author	Hernández Rey, Juan José
dc.contributor.author	Hernando Morata, José Ángel
dc.contributor.author	Lacasta Llácer, Carlos
dc.contributor.author	Lozano Bahilo, José Julio
dc.contributor.author	Martínez Vidal, Fernando
dc.contributor.author	Martí García, Salvador
dc.contributor.author	Navas Concha, Sergio
dc.contributor.author	Salt Cairols, José
dc.contributor.author	Valls Ferrer, Juan Antonio
dc.date.accessioned	2014-04-29T12:04:37Z
dc.date.available	2014-04-29T12:04:37Z
dc.date.issued	1995
dc.identifier.citation	DELPHI Collaboration Castillo Giménez, María Victoria Ferrer Soria, Antonio Higón Rodríguez, Emilio 1995 Production of strange b-baryons decaying into xi-/+-l-/+ pairs at LEP Zeitschrift für Physik C-Particles and Fields 68 4 541 553
dc.identifier.uri	http://hdl.handle.net/10550/34770
dc.description.abstract	An excess of events containing, in a jet, a same-sign Xi(-/+) - l(-/+) pair as compared to those with an opposite-sign Xi(-/+) - l(-/+) pair has been observed in an analysis of 1.7 million hadronic Z(o) decays collected by the DELPHI detector at LEP between 1991 and 1993 inclusive. The probability for this signal to come from non B-baryon decays is less than 5 x 10(-4). The measured production fraction corresponds to: P(b --> B - baryon) x BR(B - baryon --> Xi(-) l(-) X) = (5.9 +/- 2.1 +/- 1.0) x 10(-4), per lepton species, averaged for electrons and muons and assuming the two channels have an equal contribution. Semileptonic decays of Lambda(b) baryons can account for less than 10% of these events and the major part of the signal has to originate from Xi(b) semileptonic decays, Using the subsample of these events where the Xi(-/+) trajectory has been measured in the Vertex Detector, the lifetime of B-baryons producing a Xi(-/+) in their semileptonic decay final state is found to be: tau(B - baryon --> Xi(-) l(-) X) = 1.5(-0.4)(+0.7) +/- 0.3 ps.
dc.relation.ispartof	Zeitschrift für Physik C-Particles and Fields, 1995, vol. 68, num. 4, p. 541-553
dc.subject	Física nuclear
dc.subject	Partícules (Física nuclear)
dc.title	Production of strange b-baryons decaying into xi-/+-l-/+ pairs at LEP
dc.type	journal article	es_ES
dc.date.updated	2014-04-29T12:04:37Z
dc.identifier.doi	10.1007/BF01565254
dc.identifier.idgrec	006582
dc.rights.accessRights	open access	es_ES
dc.identifier.url	10.1007/BF01565254