%0 Journal Article
%T Neutralino-neutralino annihilation to $\gamma$Z in MSSM
%+ Laboratoire de Physique Théorique et Astroparticules (LPTA)
%A Diakonidis, Th.
%A Gounaris, G.J.
%A Layssac, J.
%A Porfyriadis, P.I.
%A Renard, F.M.
%Z 14 pages, 7 figures, Version to appear in Physical Review D
%< avec comité de lecture
%@ 1550-7998
%J Physical Review D
%I American Physical Society
%V 73
%P 073003
%8 2006
%D 2006
%Z hep-ph/0602049
%R 10.1103/PhysRevD.73.073003
%K elementary particle interaction models
%K minimal supersymmetric standard model
%K dark matter
%Z 12.15.-y, 14.80.Ly, 95.35.+d
%Z Physics [physics]/High Energy Physics - Phenomenology [hep-ph]Journal articles
%X The 1-loop computation of the processes $\tchi_i \tchi_j \to \gamma Z$ has been performed at an arbitrary c.m. energy for any pair of MSSM neutralinos. As an application suitable for Dark Matter (DM) searches, the neutralino-neutralino annihilation is studied at the limiting case of vanishing relative velocity, describing the present DM distribution in the galactic halo; and at a relative velocity of about 0.5, determining the neutralino relic density contributions. The most useful situation is obviously for $i=j=1$, but the case of non-identical neutralinos may also be useful in some corners of the parameter space. Our results are contained in the FORTRAN code PLATONdmgZ, applying to any set of real MSSM parameters. Numerical results are also presented for a sample of 6 MSSM models, describing the various possible neutralino properties. A comparison with other existing works is also made.
%G English
%L in2p3-00125010
%U https://hal.in2p3.fr/in2p3-00125010
%~ IN2P3
%~ LPTA
%~ CNRS
%~ UNIV-MONTP2
%~ UNIV-MONTPELLIER
%~ UM1-UM2