NAGIOS: RODERIC FUNCIONANDO

Precision Measurement of the Mass and Lifetime of the Xi(-)(b) Baryon

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/

Precision Measurement of the Mass and Lifetime of the Xi(-)(b) Baryon

Mostra el registre parcial de l'element

dc.contributor.author	LHCb Collaboration
dc.contributor.author	Martínez Vidal, Fernando
dc.contributor.author	Oyanguren Campos, Arantza
dc.contributor.author	Ruiz Valls, Pablo
dc.contributor.author	Sánchez Mayordomo, Carlos
dc.date.accessioned	2016-04-19T12:24:59Z
dc.date.available	2016-04-19T12:24:59Z
dc.date.issued	2014
dc.identifier.citation	LHCb Collaboration Martínez Vidal, Fernando Oyanguren Campos, Arantza Ruiz Valls, Pablo Sánchez Mayordomo, Carlos 2014 Precision Measurement of the Mass and Lifetime of the Xi(-)(b) Baryon Physical Review Letters 113 24 242002-1 242002-9
dc.identifier.uri	http://hdl.handle.net/10550/52833
dc.description.abstract	We report on measurements of the mass and lifetime of the Xi(-)(b) baryon using about 1800 Xi(-)(b) decays reconstructed in a proton-proton collision data set corresponding to an integrated luminosity of 3.0 fb(-1) collected by the LHCb experiment. The decays are reconstructed in the Xi(-)(b) -> Xi(0)(c)pi(-), Xi(0)(c) -> pK(-)K(-)pi(+) channel and the mass and lifetime are measured using the Lambda(0)(b) -> Lambda(+)(c)pi(-) mode as a reference. We measure M(Xi(-)(b)) ¿ M(Lambda(0)(b)) = 178.36 +/- 0.46 +/- 0.16 MeV/c(2), (tau Xi(-)(b)/tau Lambda(0)(b)) = 1.089 +/- 0.026 +/- 0.011, where the uncertainties are statistical and systematic, respectively. These results lead to a factor of 2 better precision on the Xi(-)(b) mass and lifetime compared to previous best measurements, and are consistent with theoretical expectations.
dc.language.iso	eng
dc.relation.ispartof	Physical Review Letters, 2014, vol. 113, num. 24, p. 242002-1-242002-9
dc.subject	Física nuclear
dc.title	Precision Measurement of the Mass and Lifetime of the Xi(-)(b) Baryon
dc.type	journal article	es_ES
dc.date.updated	2016-04-19T12:24:59Z
dc.identifier.doi	10.1103/PhysRevLett.113.242002
dc.identifier.idgrec	101841
dc.rights.accessRights	open access	es_ES