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Limits on the masses of supersymmetric particles at root s=189 GeV

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Limits on the masses of supersymmetric particles at root s=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	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	2014-03-28T12:58:44Z
dc.date.available	2014-03-28T12:58:44Z
dc.date.issued	2000
dc.identifier.citation	DELPHI Collaboration Alemany, R. Cabrera, S. 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, A. Salt Cairols, José ,Tortosa Martínez, Pablo, 2000 Limits on the masses of supersymmetric particles at root s=189 GeV Physics Letters B 489 1-2 38 54
dc.identifier.uri	http://hdl.handle.net/10550/33751
dc.description.abstract	Searches for charginos, neutralinos and sleptons at LEP2 centre-of-mass energies from 130 GeV to 189 GeV have been used to set lower limits on the mass of the Lightest Supersymmetric Particle and other supersymmetric particles within the MSSM framework. R-parity conservation has been assumed. The lightest neutralino was found to be heavier than 32.3 GeV/c^2 independent of the m_0 value. The lightest chargino, the second-to-lightest neutralino, the next-to-heaviest neutralino, the heaviest neutralino, the sneutrino and the right-handed selectron were found to be heavier than 62.4 GeV/c^2, 62.4 GeV/c^2, 99.9 GeV/c^2, 116.0 GeV/c^2, 61.0 GeV/c^2, and 87.0 GeV/c^2, respectively. These limits do not depend on m_0 or M_2 and are valid for 1 \leq tan(beta) \leq 40, in the mu region where the lightest neutralino is the LSP. If the sneutrino is heavier than the chargino the lightest neutralino has to be heavier than 32.4 GeV/c^2. The effects of mixings in the third family of sfermions on these limits are discussed. The confidence level of all limits given is 95%.
dc.relation.ispartof	Physics Letters B, 2000, vol. 489, num. 1-2, p. 38-54
dc.subject	Física nuclear
dc.subject	Partícules (Física nuclear)
dc.title	Limits on the masses of supersymmetric particles at root s=189 GeV
dc.type	journal article	es_ES
dc.date.updated	2014-03-28T12:58:44Z
dc.identifier.doi	10.1016/S0370-2693(00)00888-1
dc.identifier.idgrec	006712
dc.rights.accessRights	open access	es_ES
dc.identifier.url	10.1016/S0370-2693(00)00888-1