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Limits on the production of scalar leptoquarks from Z (0) decays at LEP

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Limits on the production of scalar leptoquarks from Z (0) decays at LEP

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dc.contributor.author	DELPHI Collaboration
dc.contributor.author	Allen, Paul
dc.contributor.author	Castillo Giménez, María Victoria
dc.contributor.author	Chrin, J. T. M.
dc.contributor.author	Cortina Gil, Eduardo
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	Lacasta Llácer, Carlos
dc.contributor.author	Lozano Bahilo, José Julio
dc.contributor.author	Martí García, Salvador
dc.contributor.author	Salt Cairols, José
dc.contributor.author	Valls Ferrer, Juan Antonio
dc.contributor.author	Zúñiga Román, Juan
dc.date.accessioned	2016-05-26T12:32:53Z
dc.date.available	2016-05-26T12:32:53Z
dc.date.issued	1993
dc.identifier.citation	DELPHI Collaboration Allen, Paul Castillo Giménez, María Victoria Chrin, J. T. M. Cortina Gil, Eduardo 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 Lacasta Llácer, Carlos Lozano Bahilo, José Julio Martí García, Salvador Salt Cairols, José Valls Ferrer, Juan Antonio Zúñiga Román, Juan 1993 Limits on the production of scalar leptoquarks from Z (0) decays at LEP Physics Letters B 316 4 620 630
dc.identifier.uri	http://hdl.handle.net/10550/53832
dc.description.abstract	A search has been made for pairs and for single production of scalar leptoquarks of the first and second generations using a data sample of 392000 Z0 decays from the DELPHI detector at LEP 1. No signal was found and limits on the leptoquark mass, production cross section and branching ratio were set. A mass limit at 95% confidence level of 45.5 GeV/c2 was obtained for leptoquark pair production. The search for the production of a single leptoquark probed the mass region above this limit and its results exclude first and second generation leptoquarks D0 with masses below 65 GeV/c2 and 73 GeV/c2 respectively, at 95% confidence level, assuming that the D0lq Yukawa coupling alpha(lambda) is equal to the electromagnetic one. An upper limit is also given on the coupling alpha(lambda) as a function of the leptoquark mass m(D0).
dc.language.iso	eng
dc.relation.ispartof	Physics Letters B, 1993, vol. 316, num. 4, p. 620-630
dc.subject	Física nuclear
dc.title	Limits on the production of scalar leptoquarks from Z (0) decays at LEP
dc.type	journal article	es_ES
dc.date.updated	2016-05-26T12:32:54Z
dc.identifier.doi	10.1016/0370-2693(93)91053-P
dc.identifier.idgrec	070484
dc.rights.accessRights	open access	es_ES