Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-06-15
Phys.Rev.D82:075013,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
23 pages, 3 figures, 4 Tables; few comments are added
Scientific paper
10.1103/PhysRevD.82.075013
We consider the prospect of lightest neutralino (${\tilde \chi}_1^0$) as a dark matter candidate in the light of recent interesting observations from the XENON100 and CDMS-II experiments in minimal supergravity framework with large $\tan\beta$ and non-vanishing $A_0$. Within the WMAP satisfied zone, there is a large direct detection reach of lighter ${\tilde \chi}_1^0$ in the lighter Higgs boson mediated resonance annihilation domain of the above scenario. It is seen that the heavier Higgs boson plays a dominating role in the ${\tilde \chi}_1^0-p$ cross-section in the associated zone of parameter space in spite of having a larger mass. Possible LHC signatures are discussed.
Chattopadhyay Utpal
Das Debottam
Ghosh Dilip Kumar
Maity Manas
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