Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-07-06
Mod.Phys.Lett.A23:2011-2022,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
10 pages, 9 figures, figures unchanged, text modified, version to appear in Mod. Phys. Lett. A
Scientific paper
10.1142/S0217732308025954
We investigate direct detection rates for Dark Matter candidates arise in a $SU(2)_L\times U(1)_Y$ with an additional doublet Higgs proposed by Barbieri, Hall and Rychkov. We refer this model as `Heavy Higgs Model'. The Standard Model Higgs mass comes out in this model very heavy adopting the few per cent chance that there is no Higgs boson mass below 200 GeV. The additional Higgs boson develops neither any VEV due to the choice of coefficient of the scalar potential of the model nor it has any coupling with fermions due to the incorporation of a discrete parity symmetry. Thus, the neutral components of the extra doublet are stable and can be considered as probable candidate of Cold Dark Matter. We have made calculations for three different types of Dark Matter experiments, namely, $^{76}$Ge (like GENIUS), DAMA (NaI) and XENON ($^{131}$Xe). Also demonstrated the annual variation of Dark Matter detection in case of all three detectors considered.
Ghosal Ambar
Majumdar Debasish
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