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Title: Nonstandard Yukawa couplings and Higgs portal dark matter

Journal Article · · Journal of High Energy Physics (Online)
 [1];  [2];  [3];  [4]
  1. Univ. of Cincinnati, Cincinnati, OH (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. Johannes Gutenberg Univ., Mainz (Germany)
  3. Srinakharinwirot Univ., Bangkok (Thailand)
  4. Univ. of Cincinnati, Cincinnati, OH (United States)

We study the implications of non-standard Higgs Yukawa couplings to light quarks on Higgs-portal dark matter phenomenology. Saturating the present experimental bounds on up-quark, down-quark, or strange-quark Yukawa couplings, the predicted direct dark matter detection scattering rate can increase by up to four orders of magnitude. The effect on the dark matter annihilation cross-section, on the other hand, is subleading unless the dark matter is very light — a scenario that is already excluded by measurements of the Higgs invisible decay width. We investigate the expected size of corrections in multi-Higgs-doublet models with natural flavor conservation, the type-II two-Higgs-doublet model, the Giudice-Lebedev model of light quark masses, minimal flavor violation new physics models, Randall-Sundrum, and composite Higgs models. We find that an enhancement in the dark matter scattering rate of an order of magnitude is possible. In conclusion, we point out that a discovery of Higgs-portal dark matter could lead to interesting bounds on the light-quark Yukawa couplings.

Research Organization:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
1212758
Report Number(s):
FERMILAB-PUB-15-134-T; MITP-15-020; arXiv eprint number arXiv:1504.04022
Journal Information:
Journal of High Energy Physics (Online), Vol. 2016, Issue 1; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 29 works
Citation information provided by
Web of Science

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Cited By (6)

125 GeV Higgs decay with lepton flavor violation in the μ ν SSM journal April 2017
Inverse seesaw mechanism and portal dark matter journal August 2019
Global analyses of Higgs portal singlet dark matter models using GAMBIT journal January 2019
Global analyses of Higgs portal singlet dark matter models using GAMBIT text January 2018
Global analyses of Higgs portal singlet dark matter models using GAMBIT text January 2019
Radiative Decays of the Higgs Boson to a Pair of Fermions text January 2017

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