منابع مشابه
Neutralino annihilation into gluons.
We present a complete calculation of the cross section for neutralino annihilation into the two-gluon final state. This channel can be quite important for the phenomenology of neutralino annihilation due to the well-known helicity suppression of neutralino annihilation into light quarks and leptons. In addition, we calculate the cross section for annihilation of neutralinos into a gluon and qua...
متن کاملNeutralino Annihilation into Two Photons
We 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 backgroundfield gauge, and ...
متن کاملgamma rays from neutralino annihilation.
We calculate the ux of cosmic gamma 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 para...
متن کاملNeutralino Annihilation at the Galactic Center Revisited
The annihilation of neutralino dark matter in the Galactic Center (GC) may result in radio signals that can be used to detect or constrain the dark matter halo density profile or dark matter particle properties. At the Galactic Center, the accretion flow onto the central Black Hole (BH) sustains strong magnetic fields that can induce synchrotron emission by electrons and positrons generated in ...
متن کاملCosmic-ray antiprotons from neutralino annihilation into gluons.
We estimate the ux of cosmic-ray antiprotons expected from the annihilation of neutralinos in the galactic halo. The antiproton signal may ooer an important alternative detection scheme in the case that neutralino annihilation proceeds mainly to the two-gluon nal state.
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2006
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.74.075005