Stable Higgs bosons as cold dark matter

摘要

In a class of the gauge-Higgs unification models the 4D neutral Higgs boson, which is a part of the extra-dimensional component of the gauge fields, becomes absolutely stable as a consequence of the gaugeinvariance and dynamically generated new parity, serving as a promising candidate for cold dark matter(CDM). We show that the observed relic abundance of cold dark matter is obtained in the SO(5) x U(1)model in the warped space with the Higgs mass around 70 GeV. The Higgs-nucleon scattering crosssection is found to be close to the current CDMS II and XENON10 bounds in the direct detection of darkmatter.