Two-body decays of the lightest stop in minimal supergravity with and without R-parity
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Two-body decays of the lightest stop in minimal supergravity with and without R-parity

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Two-body decays of the lightest stop in minimal supergravity with and without R-parity

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dc.contributor.author Díaz, Marco Aurelio
dc.contributor.author Restrepo, Diego
dc.contributor.author Furtado Valle, José Wagner
dc.date.accessioned 2015-10-22T11:22:57Z
dc.date.available 2015-10-22T11:22:57Z
dc.date.issued 2000
dc.identifier.uri http://hdl.handle.net/10550/47865
dc.description.abstract We study the decays of the lightest top squark in supergravity models with and without R-parity. Using the simplest model with an effective explicit bilinear breaking of R-parity and radiative electroweak symmetry breaking we show that, below the threshold for decays into charginos t~1→cχ+1, the lightest stop decays mainly into third generation fermions, t~1→bτ instead of the R-parity conserving mode t~1→cχ01, even for tiny tau--neutrino mass values. Moreover we show that, even above the threshold for decays into charginos, the decay t~1→bτ may be dominant. We study the role played by the universality of the boundary conditions on the soft supersymmetry breaking terms. This new decay mode t~1→bτ as well as the cascades originated by the conventional t~1→cχ01 decay followed by the R-parity violating neutralino decays can provide new signatures for stop production at LEP and the Tevatron.
dc.language.iso eng
dc.relation.ispartof Nuclear Physics B, 2000, vol. 583, num. 1-2, p. 182-210
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Díaz, Marco Aurelio Restrepo, Diego Furtado Valle, José Wagner 2000 Two-body decays of the lightest stop in minimal supergravity with and without R-parity Nuclear Physics B 583 1-2 182 210
dc.subject Física
dc.title Two-body decays of the lightest stop in minimal supergravity with and without R-parity
dc.type info:eu-repo/semantics/article
dc.date.updated 2015-10-22T11:22:58Z
dc.identifier.doi http://dx.doi.org/10.1016/S0550-3213(00)00344-8
dc.identifier.idgrec 072174

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