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A Precise measurement of the partial decay width ratio R(b)**0 = Gamma(b anti-b) / Gamma(had)

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A Precise measurement of the partial decay width ratio R(b)**0 = Gamma(b anti-b) / Gamma(had)

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dc.contributor.author	DELPHI Collaboration
dc.contributor.author	Ferrer Soria, Antonio
dc.contributor.author	Higón Rodríguez, Emilio
dc.contributor.author	Castillo Giménez, María Victoria
dc.contributor.author	Martínez Vidal, Fernando
dc.date.accessioned	2014-08-06T07:52:56Z
dc.date.available	2014-08-06T07:52:56Z
dc.date.issued	1999
dc.identifier.citation	DELPHI Collaboration Ferrer Soria, Antonio Higón Rodríguez, Emilio Castillo Giménez, María Victoria Martínez Vidal, Fernando 1999 A Precise measurement of the partial decay width ratio R(b)**0 = Gamma(b anti-b) / Gamma(had) European Physical Journal C 10 3 415 442
dc.identifier.uri	http://hdl.handle.net/10550/37362
dc.description.abstract	The partial decay width of the Z to bb¯ quark pairs has been measured by the DELPHI detector at LEP using data taken in the years 1992 to 1995. Decays of b-hadrons were tagged by several methods using tracks with large impact parameters and/or reconstructed secondary vertices, complemented by event shape variables. Combining these methods in a multivariate analysis the value Γ(Z→bb¯)Γ(Z→had)=0.21634±0.00067(stat)±0.00060(syst) was obtained, where the cc¯ production fraction was fixed to its Standard Model value.
dc.language.iso	eng
dc.relation.ispartof	European Physical Journal C, 1999, vol. 10, num. 3, p. 415-442
dc.subject	Partícules (Física nuclear)
dc.subject	Detectors de radiació
dc.title	A Precise measurement of the partial decay width ratio R(b)**0 = Gamma(b anti-b) / Gamma(had)
dc.type	journal article	es_ES
dc.date.updated	2014-08-06T07:52:56Z
dc.identifier.doi	10.1007/s100529900121
dc.identifier.idgrec	006682
dc.rights.accessRights	open access	es_ES