Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-12-26
JCAP 0404 (2004) 005
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages including 4 eps figures
Scientific paper
10.1088/1475-7516/2004/04/005
The lightest neutralino of R-parity conserving supersymmetric models serves as a compelling candidate to account for the presence of cold dark matter in the universe. In the minimal supergravity (mSUGRA) model, a relic density can be found in accord with recent WMAP data for large values of the parameter $\tan\beta$, where neutralino annihilation in the early universe occurs via the broad s-channel resonance of the pseudoscalar Higgs boson $A$. We map out rates for indirect detection of neutralinos via 1. detection of neutrinos arising from neutralino annihilation in the core of the earth or sun and 2. detection of gamma rays, antiprotons and positrons arising from neutralino annihilation in the galactic halo. If indeed $A$-resonance annihilation is the main sink for neutralinos in the early universe, then signals may occur in the gamma ray, antiproton and positron channels, while a signal in the neutrino channel would likely be absent. This is in contrast to the hyperbolic branch/focus point (HB/FP) region where {\it all} indirect detection signals are likely to occur, and also in contrast to the stau co-annihilation region, where {\it none} of the indirect signals are likely to occur.
Baer Howard
Farrill Jorge O'
No associations
LandOfFree
Probing Neutralino Resonance Annihilation via Indirect Detection of Dark Matter does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Probing Neutralino Resonance Annihilation via Indirect Detection of Dark Matter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Probing Neutralino Resonance Annihilation via Indirect Detection of Dark Matter will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-220186