Non-perturbative Effect on Thermal Relic Abundance of Dark Matter

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dc.creatorHisano, Junji
dc.creatorMatsumoto, Shigeki
dc.creatorNagai, Minoru
dc.creatorSaito, Osamu
dc.creatorSenami, Masato
dc.date2006-10-19
dc.date.accessioned2026-07-07T10:25:45Z
dc.date.available2026-07-07T10:25:45Z
dc.descriptionWe point out that thermal relic abundance of the dark matter is strongly altered by a non-perturbative effect called the Sommerfeld enhancement, when constituent particles of the dark matter are non-singlet under the SU(2)_L gauge interaction and much heavier than the weak gauge bosons. Typical candidates for such dark matter particles are the heavy wino- and higgsino-like neutralinos. We investigate the non-perturbative effect on the relic abundance of dark matter for the wino-like neutralino as an example. We show that its thermal abundance is reduced by 50% compared to the perturbative result. The wino-like neutralino mass consistent with the observed dark matter abundance turns out to be 2.7 TeV < m < 3.0 TeV.
dc.description10 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0610249
dc.identifierhttp://arxiv.org/abs/hep-ph/0610249
dc.identifierPhys.Lett.B646:34-38,2007
dc.identifierdoi:10.1016/j.physletb.2007.01.012
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/176643
dc.subjectHigh Energy Physics - Phenomenology
dc.titleNon-perturbative Effect on Thermal Relic Abundance of Dark Matter
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