511 keV $γ$-ray emission from the galactic bulge by MeV millicharged dark matter

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dc.creatorHuh, Ji-Haeng
dc.creatorKim, Jihn E.
dc.creatorPark, Jong-Chul
dc.creatorPark, Seong Chan
dc.date2008-09-11
dc.date.accessioned2026-07-07T12:36:10Z
dc.date.available2026-07-07T12:36:10Z
dc.descriptionWe propose a possible explanation for the recently observed anomalous 511 keV line with a new "millicharged" fermion. This new fermion is light [${\cal O}({\rm MeV})$]. Nevertheless, it has never been observed by any collider experiments by virtue of its tiny electromagnetic charge $εe$. In particular, we constrain parameters of this millicharged particle if the 511 keV cosmic $γ$-ray emission from the galactic bulge is due to positron production from this new particle.
dc.description3 pages, 1 figure, A talk given by J.C.Park at the 16th International Conference on Supersymmetry and the Unification of Fundamental Interactions (SUSY08), Seoul, Korea, June 16-21, 2008
dc.identifierhttps://arxiv.org/abs/0809.1953
dc.identifierhttp://arxiv.org/abs/0809.1953
dc.identifierAIP Conf.Proc.1078:554-556,2009
dc.identifierdoi:10.1063/1.3052025
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/218005
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.title511 keV $γ$-ray emission from the galactic bulge by MeV millicharged dark matter
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