Quantum corrections to the spin-independent cross section in the inert Higgs doublet model

Abstract

The inert Higgs doublet model is an extension of the standard model with an extra scalar doublet. The extra doublet is $Z_2$ odd while all the other particles are $Z_2$ even, thus the model contains a dark matter candidate. It is known that the spin-independent cross section of the dark matter and the nucleon is highly suppressed for $m_{\text{D}M}\sim m_h/2$ at the tree level. In this talk, we show the loop corrections give the significant effects in this regime.

Comments: 4 pages, Contribution to the proceedings of Toyama International Workshop on Higgs as a Probe of New Physics (HPNP2015), February 2015, Toyama, Japan, references added