| Issue |
EPL
Volume 123, Number 1, July 2018
|
|
|---|---|---|
| Article Number | 11001 | |
| Number of page(s) | 6 | |
| Section | The Physics of Elementary Particles and Fields | |
| DOI | https://doi.org/10.1209/0295-5075/123/11001 | |
| Published online | 06 August 2018 | |
Approximate alignment in two-Higgs-doublet model with extra Yukawa couplings
Department of Physics, National Taiwan University - Taipei 10617, Taiwan
Received: 22 January 2018
Accepted: 16 July 2018
With discovery of the 125 GeV boson h0, the existence of a second doublet is very plausible. We show that the “alignment” phenomenon, that h0 is found to resemble closely the Standard Model Higgs boson, may correspond to Higgs quartic couplings 
that are 
in strength. If the exotic bosons of the second doublet possess extra top Yukawa couplings, which are the least constrained by data, such a two-Higgs-doublet model could drive electroweak baryogenesis, as well as further “protect” the apparent alignment. The exotic Higgs bosons can be sub-TeV in mass while remaining well hidden so far, with broad parameter space for search at the Large Hadron Collider.
PACS: 12.60.Fr – Extensions of electroweak Higgs sector / 14.65.Ha – Top quarks / 14.80.Ec – Other neutral Higgs bosons
© EPLA, 2018
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