Cosmic rays from Leptonic Dark Matter

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dc.creatorChen, Chuan-Ren
dc.creatorTakahashi, Fuminobu
dc.date2008-10-22
dc.date2008-12-18
dc.date.accessioned2026-07-07T12:48:26Z
dc.date.available2026-07-07T12:48:26Z
dc.descriptionIf dark matter possesses a lepton number, it is natural to expect the dark-matter annihilation and/or decay mainly produces the standard model leptons, while negligible amount of the antiproton is produced. To illustrate such a simple idea, we consider a scenario that a right-handed sneutrino dark matter decays into the standard model particles through tiny R-parity violating interactions. Interestingly enough, charged leptons as well as neutrinos are directly produced, and they can lead to a sharp peak in the predicted positron fraction. Moreover, the decay of the right-handed sneutrino also generates diffuse continuum gamma rays which may account for the excess observed by EGRET, while the primary antiproton flux can be suppressed. Those predictions on the cosmic-ray fluxes of the positrons, gamma rays and antiprotons will be tested by the PAMELA and FGST observatories.
dc.description21 pages, 4 figures, 2 tables, updated plots including PAMELA data
dc.identifierhttps://arxiv.org/abs/0810.4110
dc.identifierhttp://arxiv.org/abs/0810.4110
dc.identifierJCAP02(2009)004
dc.identifierdoi:10.1088/1475-7516/2009/02/004
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/222049
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.titleCosmic rays from Leptonic Dark Matter
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