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Measurement of the ZZ cross-section in e(+)e(-) interactions at 183-189 GeV

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Measurement of the ZZ cross-section in e(+)e(-) interactions at 183-189 GeV

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dc.contributor.author	DELPHI Collaboration
dc.contributor.author	Cabrera Urbán, Susana
dc.contributor.author	Castillo Giménez, María Victoria
dc.contributor.author	Cortina Gil, Eduardo
dc.contributor.author	Costa Mezquita, María José
dc.contributor.author	Ferrer Soria, Antonio
dc.contributor.author	Fuster Verdú, Juan A.
dc.contributor.author	García García, Carmen
dc.contributor.author	Gil Botella, Inés
dc.contributor.author	Hernández Rey, Juan José
dc.contributor.author	Higón Rodríguez, Emilio
dc.contributor.author	Oyanguren Campos, Arantza
dc.contributor.author	Salt Cairols, José
dc.contributor.author	Tortosa Martínez, Pablo
dc.date.accessioned	2014-03-29T11:32:38Z
dc.date.available	2014-03-29T11:32:38Z
dc.date.issued	2001
dc.identifier.citation	DELPHI Collaboration Cabrera Urbán, Susana Castillo Giménez, María Victoria Cortina, E. Costa, M. Ferrer Soria, Antonio Fuster Verdú, Juan A. García García, Carmen Gil, I. Hernández Rey, Juan José Higón Rodríguez, Emilio Oyanguren Campos, Arantza Salt Cairols, José ,Tortosa Martínez, Pablo, 2001 Measurement of the ZZ cross-section in e(+)e(-) interactions at 183-189 GeV Physics Letters B 497 3-4 199 213
dc.identifier.uri	http://hdl.handle.net/10550/33788
dc.description.abstract	Measurements of on-shell ZZ production are described, using data collected by DELPHI in 1997 and 1998, at centre-of-mass energies sqrt(s) = 182.6 GeV and 188.6 GeV respectively. Results obtained in each of the final states q qbar q qbar, mu+mu- q qbar, e+e- q qbar, nu nubar q qbar, l+l-l+l-, and nu nubar l+l- are presented. The measured cross-sections for on-shell ZZ production via the tree-level doubly-resonant graphs (NC02) are: sigma_{NC02}(182.6 GeV) = 0.38 +- 0.18 (stat) +- 0.04 (syst) pb, sigma_{NC02}(188.6 GeV) = 0.60 +- 0.13 (stat) +- 0.07 (syst) pb. They are consistent with the Standard Model expectations of 0.25 pb and 0.65 pb at each energy.
dc.relation.ispartof	Physics Letters B, 2001, vol. 497, num. 3-4, p. 199-213
dc.subject	Física nuclear
dc.subject	Partícules (Física nuclear)
dc.title	Measurement of the ZZ cross-section in e(+)e(-) interactions at 183-189 GeV
dc.type	journal article	es_ES
dc.date.updated	2014-03-29T11:32:38Z
dc.identifier.doi	10.1016/S0370-2693(00)01346-0
dc.identifier.idgrec	006726
dc.rights.accessRights	open access	es_ES
dc.identifier.url	10.1016/S0370-2693(00)01346-0