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Measurement of the forward-backward asymmetry of e(+)e(-)-]z-]b(b)over-bar using prompt leptons and a lifetime tag

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Measurement of the forward-backward asymmetry of e(+)e(-)-]z-]b(b)over-bar using prompt leptons and a lifetime tag

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dc.contributor.author	DELPHI Collaboration
dc.contributor.author	Ferrer Soria, Antonio
dc.contributor.author	Cases Ruiz, Ramón
dc.contributor.author	Castillo Giménez, María Victoria
dc.contributor.author	Higón Rodríguez, Emilio
dc.contributor.author	Chrin, J. T. M.
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	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	2014-05-06T11:01:37Z
dc.date.available	2014-05-06T11:01:37Z
dc.date.issued	1995
dc.identifier.citation	DELPHI Collaboration (Abreu, P. Ferrer Soria, Antonio Cases Ruiz, Manuel Ramón Castillo Giménez, María Victoria Higón Rodríguez, Emilio 1995 Measurement of the forward-backward asymmetry of e(+)e(-)-]z-]b(b)over-bar using prompt leptons and a lifetime tag Zeitschrift für Physik C-Particles and Fields 65 4 569 585
dc.identifier.uri	http://hdl.handle.net/10550/34921
dc.description.abstract	The forward-backward asymmetry of the processe + e −→Z→b bb¯ has been measured using events collected by the DELPHI experiment during the 1991 and 1992 LEP runs. This data sample corresponded to 884 000 hadronicZ decays at a centre-of-mass energy s√∼MZ . The tagging of b-quark events was performed using two approaches; the first was based on the semileptonic decay channelsb→X+μ andb→X+e, the second used a lifetime tag with jet-charge reconstruction. The results of these two methods were combined to give Abb¯FB=0.107±0.011(stat.+syst.+mixing). With the semileptonic sample, the forward-backward asymmetry of the processe + e −→Z→ cc¯ was also measured to be Acc¯FB=0.083±0.022(stat.)±0.016(syst.). The effective value of the Weinberg mixing angle derived from these measurements was sin2θlepeff=0.2294±0.0021.
dc.relation.ispartof	Zeitschrift für Physik C-Particles and Fields, 1995, vol. 65, num. 4, p. 569-585
dc.subject	Partícules (Física nuclear)
dc.subject	Detectors de radiació
dc.title	Measurement of the forward-backward asymmetry of e(+)e(-)-]z-]b(b)over-bar using prompt leptons and a lifetime tag
dc.type	journal article	es_ES
dc.date.updated	2014-05-06T11:01:37Z
dc.identifier.doi	10.1007/BF01578667
dc.identifier.idgrec	006563
dc.rights.accessRights	open access	es_ES