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キーワード:
High Energy Physics - Phenomenology, hep-ph
要旨:
We show that fermionic dark matter (DM) which communicates with the Standard
Model (SM) via the Higgs portal is a viable scenario, even if a SM-like Higgs
is found at around 125 GeV. Using effective field theory we show that for DM
with a mass in the range from about 60 GeV to 2 TeV the Higgs portal needs to
be parity violating in order to be in agreement with direct detection searches.
For parity conserving interactions we identify two distinct options that remain
viable: a resonant Higgs portal, and an indirect Higgs portal. We illustrate
both possibilities using a simple renormalizable toy model.