Neutralino Annihilation into Two Photons

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dc.creatorBern, Z.
dc.creatorGondolo, P.
dc.creatorPerelstein, M.
dc.date1997-06-30
dc.date.accessioned2026-07-07T11:09:38Z
dc.date.available2026-07-07T11:09:38Z
dc.descriptionWe compute the annihilation cross-section of two neutralinos at rest into two photons, which is of importance for the indirect detection of neutralino dark matter in the galactic halo through a quasi-monochromatic gamma-ray line. We include all diagrams to one-loop level in the minimal supersymmetric extension of the standard model. We use the helicity formalism, the background-field gauge, and an efficient loop-integral reduction method. We confirm the result recently obtained by Bergstrom and Ullio in a different gauge, which disagrees with other published calculations.
dc.descriptionLatex, 12 pages
dc.identifierhttps://arxiv.org/abs/hep-ph/9706538
dc.identifierhttp://arxiv.org/abs/hep-ph/9706538
dc.identifierPhys.Lett.B411:86-96,1997
dc.identifierdoi:10.1016/S0370-2693(97)00990-8
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/190535
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.titleNeutralino Annihilation into Two Photons
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