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Photon events with missing energy at √s = 183 to 189 GeV

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Photon events with missing energy at √s = 183 to 189 GeV

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dc.contributor.author	DELPHI Collaboration
dc.contributor.author	Alemany Fernández, Reyes
dc.contributor.author	Cabrera Urbán, Susana
dc.contributor.author	Castillo Giménez, María Victoria
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	Gil Botella, Inés
dc.contributor.author	Hernández Rey, Juan José
dc.contributor.author	Higón Rodríguez, Emilio
dc.contributor.author	Martínez Vidal, Fernando
dc.contributor.author	Navas Concha, Sergio
dc.contributor.author	Salt Cairols, José
dc.contributor.author	Tortosa Martínez, Pablo
dc.date.accessioned	2014-03-28T13:07:59Z
dc.date.available	2014-03-28T13:07:59Z
dc.date.issued	2000
dc.identifier.citation	DELPHI Collaboration Alemany, R. Cabrera Urbán, Susana Castillo Giménez, María Victoria Cortina, E. Ferrer Soria, Antonio Fuster Verdú, Juan A. García García, Carmen Gil, I. Hernández Rey, Juan José Higón Rodríguez, Emilio Martínez Vidal, Fernando Navas, S. Salt Cairols, José ,Tortosa Martínez, Pablo, 2000 Photon events with missing energy at √s = 183 to 189 GeV European Physical Journal C 17 1 53 65
dc.identifier.uri	http://hdl.handle.net/10550/33756
dc.description.abstract	The production of single photons has been studied in the reaction e+e- -> gamma + invisible particles at centre-of-mass energies of 183 GeV and 189 GeV. A previously published analysis of events with multi-photon final states accompanied by missing energy has been updated with 189 GeV data. The data were collected with the DELPHI detector and correspond to integrated luminosities of about 51 pb^{-1} and 158 pb^{-1} at the two energies. The number of light neutrino families is measured to be 2.84 +/- 0.15(stat) +/- 0.14(syst). The absence of an excess of events beyond that expected from Standard Model processes is used to set limits on new physics as described by supersymmetric and composite models. A limit on the gravitational scale is also determined.
dc.relation.ispartof	European Physical Journal C, 2000, vol. 17, num. 1, p. 53-65
dc.subject	Física nuclear
dc.subject	Partícules (Física nuclear)
dc.title	Photon events with missing energy at √s = 183 to 189 GeV
dc.type	journal article	es_ES
dc.date.updated	2014-03-28T13:07:59Z
dc.identifier.doi	10.1007/s100520000434
dc.identifier.idgrec	006716
dc.rights.accessRights	open access	es_ES
dc.identifier.url	10.1007/s100520000434