Sneutrino-antisneutrino mixing at future colliders

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dc.creatorHonkavaara, Tuomas
dc.creatorHuitu, Katri
dc.creatorRoy, Sourov
dc.date2007-10-11
dc.date2007-10-15
dc.date.accessioned2026-07-07T08:35:54Z
dc.date.available2026-07-07T08:35:54Z
dc.descriptionSneutrino-antisneutrino mixing occurs in a supersymmetric model where neutrinos have nonzero Majorana masses. This can lead to the sneutrino decaying into a final state with a "wrong-sign charged lepton". In an $e^- γ$ collider, the signal of the associated production of an electron-sneutrino and the lighter chargino and their subsequent decays can be $e^- γ\to e^+ {\tilde τ}_1^- {\tilde τ}_1^- + \mpT$ where the ${\tilde τ}_1$s are long-lived and can produce heavily ionizing charged tracks. This signal is free of any Standard Model background, and the supersymmetric backgrounds are small. Such a signal can be experimentally observable under certain conditions which are possible to obtain in an anomaly-mediated supersymmetry breaking scenario. Information on a particular combination of the neutrino masses and mixing angles can also be extracted through the observation of this signal. Sneutrino-antisneutrino mixing at the LHC is currently under study, and asymmetry considerations seem promising there.
dc.descriptionSubmitted for the SUSY07 proceedings, 4 pages, LaTeX, 3 eps figures; v2: one reference added
dc.identifierhttps://arxiv.org/abs/0710.2207
dc.identifierhttp://arxiv.org/abs/0710.2207
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/139896
dc.subjectHigh Energy Physics - Phenomenology
dc.titleSneutrino-antisneutrino mixing at future colliders
dc.typetext

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