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γ rays from neutralino annihilation

Jungman, Gerard and Kamionkowski, Marc (1995) γ rays from neutralino annihilation. Physical Review D, 51 (6). pp. 3121-3124. ISSN 2470-0010. doi:10.1103/PhysRevD.51.3121.

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We calculate the flux of cosmic γ rays expected from the annihilation of neutralinos in the galactic halo. Our calculation of the annihilation cross section to two photons improves the existing calculations by inclusion of exact one-loop diagrams for the amplitudes involving Higgs boson and chargino states as well as those involving fermion and sfermion states. A survey of supersymmetric parameter space shows that numerous models would be observable at the 3σ level with an air Cherenkov telescope with an exposure of 10^4 m^2 yr.

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Kamionkowski, Marc0000-0001-7018-2055
Additional Information:© 1995 The American Physical Society Received 14 November 1994 G.J. thanks J. Buckley for conversations about high-energy γ rays. M.K. acknowledges the hospitalty of the Theory Group at CERN where part of this work was completed. M.K. was supported at the I.A.S. by the W.M. Keck Foundation and at Columbia University by the U.S. Department of Energy under Contract No. DE-FG02-92ER40699. G.J. was supported by the U.S. Department of Energy under Contract No. DE-FG02-85ER40231.
Funding AgencyGrant Number
W. M. Keck FoundationUNSPECIFIED
Department of Energy (DOE)DE-FG02-92ER40699
Department of Energy (DOE)DE-FG02-85ER40231
Issue or Number:6
Record Number:CaltechAUTHORS:JUNprd95b
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ID Code:4682
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Deposited On:03 Sep 2006
Last Modified:08 Nov 2021 20:19

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