Search for stable heavy charged particles in e(+)e(-) collisions at root s=130-136, 161 and 172 GeV
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Search for stable heavy charged particles in e(+)e(-) collisions at root s=130-136, 161 and 172 GeV

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Search for stable heavy charged particles in e(+)e(-) collisions at root s=130-136, 161 and 172 GeV

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DELPHI Collaboration; Alemany Fernández, Reyes; Cabrera Urbán, Susana Perfil; Castillo Giménez, María Victoria Perfil; Cortina Gil, Eduardo; Ferrer Soria, Antonio Perfil; Fuster Verdú, Juan A. Perfil; García García, Carmen Perfil; Hernández Rey, Juan José Perfil; Higón Rodríguez, Emilio Perfil; Lacasta Llácer, Carlos; Martínez Vidal, Fernando Perfil; Navas Concha, Sergio; Salt Cairols, José Perfil
Aquest document és un/a article, creat/da en: 1997

Este documento está disponible también en : http://dx.doi.org/10.1016/S0370-2693(97)00152-4
A search for stable or long-lived heavy charged particles in e+e− interactions at energies of 130¿136, 161 and 172 GeV has been performed using the data taken by the DELPHI experiment at LEP. The search is based on particle identification provided by the Time Projection Chamber and the Ring Imaging Cherenkov detector. Upper limits at 95% confidence level are derived on the cross-section for heavy long-lived pair-produced charge ±e and View the MathML source particles in the range of 0.4¿2.3 pb for masses from 45 to 84 GeV/c2. Within supersymmetric extensions of the Standard Model, long-lived charginos with masses from 45 to 84 (80) GeV/c2 for high (low) sneutrino masses can be excluded at 95% confidence level. Left-handed (right-handed) long-lived or stable smuons and staus with masses between 45 and 68 (65) GeV/c2 can be excluded at 95% confidence level.

    DELPHI Collaboration Alemany, R. Cabrera Urbán, Susana Castillo Giménez, María Victoria Cortina, E. Ferrer Soria, Antonio Fuster Verdú, Juan A. García García, Carmen Hernández Rey, Juan José Higón Rodríguez, Emilio Lacasta Llácer, Carlos Martínez Vidal, Fernando Navas, S. Salt Cairols, José 1997 Search for stable heavy charged particles in e(+)e(-) collisions at root s=130-136, 161 and 172 GeV Physics Letters B 396 315 326
http://dx.doi.org/10.1016/S0370-2693(97)00152-4
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