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A measurement of sin2-theta-W from the charge asymmetry of hadronic events at the Z0 peak

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A measurement of sin2-theta-W from the charge asymmetry of hadronic events at the Z0 peak

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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	Sánchez Rojo, María Ester
dc.contributor.author	Valls Ferrer, Juan Antonio
dc.contributor.author	Zúñiga Román, Juan
dc.contributor.author	Salt Cairols, José
dc.date.accessioned	2016-05-27T09:49:44Z
dc.date.available	2016-05-27T09:49:44Z
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 Sánchez Rojo, María Ester Valls Ferrer, Juan Antonio Zúñiga Román, Juan Salt Cairols, José 1992 A measurement of sin2-theta-W from the charge asymmetry of hadronic events at the Z0 peak Physics Letters B 277 3 371 382
dc.identifier.uri	http://hdl.handle.net/10550/53850
dc.description.abstract	The weak mixing angle has been measured from the charge asymmetry of hadronic events with two different approaches using the DELPHI detector at LEP. Both methods are based on a momentum-weighted charge sum to determine the jet charge in both event hemispheres. In a data sample of 247 300 multihadronic Z 0 decays a charge asymmetry of 〈 Q F 〉 − 〈 Q B 〉 = −0.0076±0.0012(stat.)±0.0005(exp. syst.)±0.0014(frag.) and a raw forward-backward asymmetry of A raw FB = −0.0109±0.0020(stat.)±0.0010(exp. syst.)±0.0017(frag.) have been measured. This result corresponds to a value of sin θ eff =0.2345±0.0030(exp.)±0.0027(frag.), sin 2 θ MS =0.2341±0.0030( exp. )±0.0027( frag. ) and to sin 2 θ W =1− m 2 W / m 2 Z =0.2299± 0.0030(exp.)±0.0027(frag.)±0.0028(theor.). The experimental error is the quadratic sum of the statistical and the experimental systematic error and the theoretical error originates from a value of m t =130±40 GeV/ c 2 and a range of m H from 45 GeV/ c 2 to 1000 GeV/ c 2 .
dc.language.iso	eng
dc.relation.ispartof	Physics Letters B, 1992, vol. 277, num. 3, p. 371-382
dc.subject	Física nuclear
dc.title	A measurement of sin2-theta-W from the charge asymmetry of hadronic events at the Z0 peak
dc.type	journal article	es_ES
dc.date.updated	2016-05-27T09:49:44Z
dc.identifier.doi	10.1016/0370-2693(92)90760-2
dc.identifier.idgrec	070940
dc.rights.accessRights	open access	es_ES