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Lifetime of charged and neutral B hadrons using event topology

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Lifetime of charged and neutral B hadrons using event topology

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dc.contributor.author	DELPHI Collaboration
dc.contributor.author	Castillo Giménez, María Victoria
dc.contributor.author	Cortina Gil, Eduardo
dc.contributor.author	Ferrer Soria, Antonio
dc.contributor.author	Fuster Verdú, Juan A.
dc.contributor.author	García García, Carmen
dc.contributor.author	Hernández Rey, Juan José
dc.contributor.author	Higón Rodríguez, Emilio
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.date.accessioned	2014-04-30T07:27:30Z
dc.date.available	2014-04-30T07:27:30Z
dc.date.issued	1995
dc.identifier.citation	DELPHI Collaboration Castillo Giménez, María Victoria Cortina, E. Ferrer Soria, Antonio Fuster Verdú, Juan A. García García, Carmen Hernández Rey, Juan José Higón Rodríguez, Emilio Martínez Vidal, Fernando Martí García, Salvador Navas, S. Salt Cairols, José 1995 Lifetime of charged and neutral B hadrons using event topology Zeitschrift für Physik C-Particles and Fields 68 363 374
dc.identifier.uri	http://hdl.handle.net/10550/34781
dc.description.abstract	The lifetimes of charged and neutral B hadrons have been measured using data collected by the DELPHI experiment at LEP between 1991 and 1993. B hadrons are tagged as jets with a secondary vertex and the charge of the B candidate is taken to be the sum of the charges of the particles in the secondary vertex. Approximately 1,434,000 multihadronic Z0 decays yielded 1817 B hadron candidates. The B purity was estimated to be around 99.1±0.3%, and 83% (70%) of the events measured as neutral (charged) came from neutral (charged) B's. The mean lifetimes of charged and neutral B hadrons were found to be 1.72±0.08 (stat.) ±0.06 (syst.) ps and 1.58±0.11 (stat.)±0.09 (syst.) ps respectively. The ratio of their lifertimes, tcharged/tneutral, was 1.09-0.10+0.11 (stat.)±0.08 (syst.). By making assumptions about the Bs0 and ?b0 states, the B+ and B0 meson lifetimes were determined to be tB+ = 1.72 ± 0.08 (stat.) ±0.06 (syst.) ps and tB+ = 1.63 ± 0.14 (stat.)±0.13 (syst.) ps and the ratio of their lifetimes was.
dc.relation.ispartof	Zeitschrift für Physik C-Particles and Fields, 1995, vol. 68, p. 363-374
dc.subject	Física nuclear
dc.subject	Partícules (Física nuclear)
dc.title	Lifetime of charged and neutral B hadrons using event topology
dc.type	journal article	es_ES
dc.date.updated	2014-04-30T07:27:30Z
dc.identifier.doi	10.1007/BF01620712
dc.identifier.idgrec	006578
dc.rights.accessRights	open access	es_ES
dc.identifier.url	10.1007/BF01620712