Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/13589
ชื่อเรื่อง: Nonstandard Yukawa couplings and Higgs portal dark matter
ผู้แต่ง: Bishara F.
Brod J.
Uttarayat P.
Zupan J.
วันที่เผยแพร่: 2016
บทคัดย่อ: 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. Finally, we point out that a discovery of Higgs-portal dark matter could lead to interesting bounds on the light-quark Yukawa couplings. © 2016, The Author(s).
URI: https://ir.swu.ac.th/jspui/handle/123456789/13589
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84953375758&doi=10.1007%2fJHEP01%282016%29010&partnerID=40&md5=25516988ec2c5b7a457b842609d7bf17
ISSN: 11266708
Appears in Collections:Scopus 1983-2021

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