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Title: Higgs flavor phenomenology in a supersymmetric left-right model with parity

Journal Article · · Journal of High Energy Physics (Online)
 [1];  [2];  [3];  [4]
  1. Nagoya Univ. (Japan). Dept. of Physics
  2. Inst. for Basic Science (IBS), Daejeon (Korea, Republic of). Center for Theoretical Physics of the Universe; Keio Univ., Yokohama (Japan)
  3. Kindai Univ., Osaka (Japan). Dept. of Physics
  4. Huazhong Univ. of Science and Technology, Wuhan (China). School of Physics

In this paper, we focus on the supersymmetric model with left-right (LR) symmetry, that is especially proposed in our previous work [1]. In this model, there are four Higgs doublets in order to realize the Standard Model (SM) fermion masses and the Cabibbo-Kobayashi-Maskawa matrix. The heavy Higgs doublets unavoidably have flavor changing couplings to the SM fermions and induce flavor-changing neutral currents at tree level. We study broader parameter space than the previous work with including the renormalization group corrections to the Yukawa couplings between the LR breaking scale, \( \mathcal{O} \)(1013) GeV, and the supersymmetry breaking scales, \( \mathcal{O} \)(100) TeV. The CP violating observable in K–\( \overline{K} \) mixing, ϵK, strongly constrains the model, so that heavy Higgs mass should be heavier than \( \mathcal{O} \)(100) TeV. We study the lepton flavor violating (LFV) processes setting heavy Higgs masses to be 170 TeV. The branching ratios of μ → 3e and the μe conversion can be larger than 10-16 that could be covered by the future experiments. We also study the degree of fine-tuning in the parameter region that predicts testable LFV processes.

Research Organization:
The Ohio State Univ., Columbus, OH (United States)
Sponsoring Organization:
USDOE Office of Science (SC); Japan Society for the Promotion of Science (JSPS)
Grant/Contract Number:
SC0011726; 19J10980; 18K13534; 19H04614; 19H05101; 19K03867
OSTI ID:
1851533
Journal Information:
Journal of High Energy Physics (Online), Vol. 2021, Issue 6; ISSN 1029-8479
Publisher:
Springer NatureCopyright Statement
Country of Publication:
United States
Language:
English

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