Multi-Higgs doublet models: the Higgs-fermion couplings and their sum rules

Bento, Miguel P.; Haber, Howard E.; Romão, Jorge C.; Silva, João P.

doi:10.1007/JHEP10(2018)143

Title: Multi-Higgs doublet models: the Higgs-fermion couplings and their sum rules

Abstract

This is the second of a series of papers that explores the physical parameterization, sum rules and unitarity bounds arising from a non-minimal scalar sector of the Standard Model (SM) that consists of N Higgs doublets. In this paper, we focus on the structure and implication of the Yukawa interactions that couple the N scalar doublets to the SM fermions. We employ the charged Higgs basis, which is defined as the basis of scalar fields such that the neutral scalar field vacuum expectation value resides entirely in one of the N scalar doublet fields, and the charged components of the remaining N – 1 scalar doublet fields are the physical (mass-eigenstate) charged Higgs fields. Based on the structure of the Yukawa Lagrangian of the model (and as a consequence of tree-level unitarity), one may deduce numerous sum rules, several of which have not appeared previously in the literature. Furthermore, these sum rules can be used to uncover intimate relations between the structure of the Higgs-fermion couplings and the scalar/gauge couplings. In particular, we show that the approximate alignment limit, in which the W⁺W^– and ZZ couplings to the observed Higgs boson are approximately SM-like, imposes significant constraints on the Higgs-fermionmore » couplings.« less

Authors:

Bento, Miguel P. ^[1]; Haber, Howard E. ^[2]; Romão, Jorge C. ^[1]; Silva, João P. ^[1]

Univ. de Lisboa, Lisboa (Portugal)
Univ. of California, Santa Cruz, CA (United States)

Publication Date:: Tue Oct 23 00:00:00 EDT 2018

Research Org.:: Univ. of California, Santa Cruz, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1483940

Grant/Contract Number:: SC0010107

Resource Type:: Accepted Manuscript

Journal Name:: Journal of High Energy Physics (Online)

Additional Journal Information:: Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2018; Journal Issue: 10; Journal ID: ISSN 1029-8479

Publisher:: Springer Berlin

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Beyond Standard Model; Higgs Physics

Citation Formats


                    Bento, Miguel P., Haber, Howard E., Romão, Jorge C., and Silva, João P. Multi-Higgs doublet models: the Higgs-fermion couplings and their sum rules.  United States: N. p., 2018. 
Web.  doi:10.1007/JHEP10(2018)143.

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                    Bento, Miguel P., Haber, Howard E., Romão, Jorge C., & Silva, João P. Multi-Higgs doublet models: the Higgs-fermion couplings and their sum rules.  United States.  https://doi.org/10.1007/JHEP10(2018)143

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                    Bento, Miguel P., Haber, Howard E., Romão, Jorge C., and Silva, João P. Tue .  
"Multi-Higgs doublet models: the Higgs-fermion couplings and their sum rules".  United States.  https://doi.org/10.1007/JHEP10(2018)143.  https://www.osti.gov/servlets/purl/1483940.

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@article{osti_1483940,

  title        = {Multi-Higgs doublet models: the Higgs-fermion couplings and their sum rules},

  author       = {Bento, Miguel P. and Haber, Howard E. and Romão, Jorge C. and Silva, João P.},

  abstractNote = {This is the second of a series of papers that explores the physical parameterization, sum rules and unitarity bounds arising from a non-minimal scalar sector of the Standard Model (SM) that consists of N Higgs doublets. In this paper, we focus on the structure and implication of the Yukawa interactions that couple the N scalar doublets to the SM fermions. We employ the charged Higgs basis, which is defined as the basis of scalar fields such that the neutral scalar field vacuum expectation value resides entirely in one of the N scalar doublet fields, and the charged components of the remaining N – 1 scalar doublet fields are the physical (mass-eigenstate) charged Higgs fields. Based on the structure of the Yukawa Lagrangian of the model (and as a consequence of tree-level unitarity), one may deduce numerous sum rules, several of which have not appeared previously in the literature. Furthermore, these sum rules can be used to uncover intimate relations between the structure of the Higgs-fermion couplings and the scalar/gauge couplings. In particular, we show that the approximate alignment limit, in which the W+W– and ZZ couplings to the observed Higgs boson are approximately SM-like, imposes significant constraints on the Higgs-fermion couplings.},

  doi          = {10.1007/JHEP10(2018)143},

  journal      = {Journal of High Energy Physics (Online)},

  number       = 10,

  volume       = 2018,

  place        = {United States},

  year         = {Tue Oct 23 00:00:00 EDT 2018},

  month        = {Tue Oct 23 00:00:00 EDT 2018}

}

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Similar Records

Title: Multi-Higgs doublet models: the Higgs-fermion couplings and their sum rules

Abstract

Citation Formats

Multi-Higgs doublet models: physical parametrization, sum rules and unitarity bounds journal, November 2017

Theoretical constraints on additional Higgs bosons in light of the 126 GeV Higgs journal, May 2014

Large Higgs-electron Yukawa coupling in 2HDM journal, April 2018

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Scrutinizing the alignment limit in two-Higgs-doublet models. II. m H = 125 GeV journal, February 2016

Structure of potentials with N Higgs doublets journal, September 2007

Undoubtable signs of C P -violation in Higgs boson decays at the LHC run 2 journal, September 2015

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A precision constraint on multi-Higgs-doublet models journal, May 2008

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CP -conserving two-Higgs-doublet model: The approach to the decoupling limit journal, April 2003

Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC journal, September 2012

Large pseudoscalar Yukawa couplings in the complex 2HDM journal, June 2015

Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC journal, September 2012

CP violation in charged Higgs production and decays in the Complex Two Higgs Doublet Model journal, April 2011

Diagonal neutral currents journal, April 1977

Soft lepton-flavor violation in a multi-Higgs-doublet seesaw model journal, July 2002

High energy behaviour and gauge symmetry journal, September 1973

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A Theory of Spontaneous T Violation journal, August 1973

Sum rules for Higgs bosons journal, February 1991

Impersonating the Standard Model Higgs boson: alignment without decoupling journal, April 2014

Probing the scalar-pseudoscalar mixing in the 125 GeV Higgs particle with current data journal, July 2012

The C2HDM revisited journal, February 2018

Natural conservation laws for neutral currents journal, April 1977

HDECAY: a program for Higgs boson decays in the Standard Model and its supersymmetric extension journal, January 1998

Effects of multiple Higgs bosons on tree unitarity journal, October 1984

Derivation of gauge invariance from high-energy unitarity bounds on the S matrix journal, August 1974

The equivalence theorem journal, April 1990

A Resource for Signs and Feynman Diagrams of the Standard Model journal, October 2012

Erratum: Basis-independent methods for the two-Higgs-doublet model. II. The significance of tan ﻿ β [Phys. Rev. D 74 , 015018 (2006)] journal, September 2006

Maximally symmetric two Higgs doublet model with natural standard model alignment journal, December 2014

h → Zγ in the complex two Higgs doublet model journal, December 2014

Multi-Higgs doublet models: physical parametrization, sum rules and unitarity bounds
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Theoretical constraints on additional Higgs bosons in light of the 126 GeV Higgs
journal, May 2014

Large Higgs-electron Yukawa coupling in 2HDM
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Jarlskog-like invariants for theories with scalars and fermions
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Complementarity between nonstandard Higgs boson searches and precision Higgs boson measurements in the MSSM
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Scrutinizing the alignment limit in two-Higgs-doublet models. II. $m_{H} = 125 GeV$
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Structure of potentials with $N$ Higgs doublets
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Undoubtable signs of $C P$ -violation in Higgs boson decays at the LHC run 2
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Scrutinizing the alignment limit in two-Higgs-doublet models: $m_{h} = 125 GeV$
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CP -conserving two-Higgs-doublet model: The approach to the decoupling limit
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Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
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Large pseudoscalar Yukawa couplings in the complex 2HDM
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CP violation in charged Higgs production and decays in the Complex Two Higgs Doublet Model
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Derivation of gauge invariance from high-energy unitarity bounds on the $S$ matrix
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