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Measurement of the Z0 branching fraction to B quark pairs using the boosted sphericity product

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Measurement of the Z0 branching fraction to B quark pairs using the boosted sphericity product

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dc.contributor.author	DELPHI Collaboration
dc.contributor.author	Allen, Paul
dc.contributor.author	Llosá Reig, Rafael
dc.contributor.author	Benlloch Baviera, José María
dc.contributor.author	Castillo Giménez, María Victoria
dc.contributor.author	Fez Laso, M. D. M. de
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	Higón Rodríguez, Emilio
dc.contributor.author	Lozano Bahilo, José Julio
dc.contributor.author	Lacasta Llácer, Carlos
dc.contributor.author	Martí García, Salvador
dc.contributor.author	Salt Cairols, José
dc.contributor.author	Sánchez Rojo, María Ester
dc.contributor.author	Valls Ferrer, Juan Antonio
dc.contributor.author	Zúñiga Román, Juan
dc.date.accessioned	2016-05-27T09:53:04Z
dc.date.available	2016-05-27T09:53:04Z
dc.date.issued	1992
dc.identifier.citation	DELPHI Collaboration Allen, Paul Llosá Reig, Rafael Benlloch Baviera, José María Castillo Giménez, María Victoria Fez Laso, M. D. M. de Ferrer Soria, Antonio Fuster Verdú, Juan A. García García, Carmen Gómez Cadenas, Juan José Hernández Rey, Juan José Higón Rodríguez, Emilio Lozano Bahilo, José Julio Lacasta Llácer, Carlos Martí García, Salvador Salt Cairols, José Sánchez Rojo, María Ester Valls Ferrer, Juan Antonio Zúñiga Román, Juan 1992 Measurement of the Z0 branching fraction to B quark pairs using the boosted sphericity product Physics Letters B 281 3-4 383 393
dc.identifier.uri	http://hdl.handle.net/10550/53851
dc.description.abstract	From a sample of about 120 000 hadronic Z 0 decays, using a technique based on a separation of the different event categories in the boosted sphericity product, the fraction of b b decays has been measured to be 0.219 ± 0.014 (stat)± 0.019 (syst). Using the DELPHI determination of the hadronic Z 0 width, this corresponds to a partial width τ b b = 378 ± 42 MeV (in good agreement with the standard model prediction of ∼-380 MeV). Combining this measurement with the determinations based on events with high p t leptons gives an estimate for the branching ratio of b into leptons at LEP of (11.2 ± 1.2)%, consistent with previous determinations.
dc.language.iso	eng
dc.relation.ispartof	Physics Letters B, 1992, vol. 281, num. 3-4, p. 383-393
dc.subject	Física nuclear
dc.title	Measurement of the Z0 branching fraction to B quark pairs using the boosted sphericity product
dc.type	journal article	es_ES
dc.date.updated	2016-05-27T09:53:04Z
dc.identifier.doi	10.1016/0370-2693(92)91159-7
dc.identifier.idgrec	070937
dc.rights.accessRights	open access	es_ES