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Title: High scale flavor alignment in two-Higgs doublet models and its phenomenology

The most general two-Higgs doublet model (2HDM) includes potentially large sources of flavor changing neutral currents (FCNCs) that must be suppressed in order to achieve a phenomenologically viable model. The flavor alignment ansatz postulates that all Yukawa coupling matrices are diagonal when expressed in the basis of mass-eigenstate fermion fields, in which case tree-level Higgs-mediated FCNCs are eliminated. In this work, we explore models with the flavor alignment condition imposed at a very high energy scale, which results in the generation of Higgs-mediated FCNCs via renormalization group running from the high energy scale to the electroweak scale. Using the current experimental bounds on flavor changing observables, constraints are derived on the aligned 2HDM parameter space. In the favored parameter region, we analyze the implications for Higgs boson phenomenology.
Authors:
 [1] ;  [2] ;  [2]
  1. Univ. of Cincinnati, OH (United States). Dept. of Physics
  2. Univ. of California, Santa Cruz, CA (United States). Santa Cruz Inst. for Particle Physics
Publication Date:
Grant/Contract Number:
SC0010107; PHY11-25915; PHY-1066293
Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2017; Journal Issue: 6; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Research Org:
Univ. of California, Santa Cruz, CA (United States); Univ. of Cincinnati, OH (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); National Science Foundation (NSF)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Beyond Standard Model; heavy quark physics; Higgs physics
OSTI Identifier:
1424020

Gori, Stefania, Haber, Howard E., and Santos, Edward. High scale flavor alignment in two-Higgs doublet models and its phenomenology. United States: N. p., Web. doi:10.1007/JHEP06(2017)110.
Gori, Stefania, Haber, Howard E., & Santos, Edward. High scale flavor alignment in two-Higgs doublet models and its phenomenology. United States. doi:10.1007/JHEP06(2017)110.
Gori, Stefania, Haber, Howard E., and Santos, Edward. 2017. "High scale flavor alignment in two-Higgs doublet models and its phenomenology". United States. doi:10.1007/JHEP06(2017)110. https://www.osti.gov/servlets/purl/1424020.
@article{osti_1424020,
title = {High scale flavor alignment in two-Higgs doublet models and its phenomenology},
author = {Gori, Stefania and Haber, Howard E. and Santos, Edward},
abstractNote = {The most general two-Higgs doublet model (2HDM) includes potentially large sources of flavor changing neutral currents (FCNCs) that must be suppressed in order to achieve a phenomenologically viable model. The flavor alignment ansatz postulates that all Yukawa coupling matrices are diagonal when expressed in the basis of mass-eigenstate fermion fields, in which case tree-level Higgs-mediated FCNCs are eliminated. In this work, we explore models with the flavor alignment condition imposed at a very high energy scale, which results in the generation of Higgs-mediated FCNCs via renormalization group running from the high energy scale to the electroweak scale. Using the current experimental bounds on flavor changing observables, constraints are derived on the aligned 2HDM parameter space. In the favored parameter region, we analyze the implications for Higgs boson phenomenology.},
doi = {10.1007/JHEP06(2017)110},
journal = {Journal of High Energy Physics (Online)},
number = 6,
volume = 2017,
place = {United States},
year = {2017},
month = {6}
}