Status of the two-Higgs-doublet model of type II

A bstract We determine the allowed parameter space of the CP -conserving two-Higgs-doublet model (2HDM) of type II with a softly broken Z 2 symmetry. Our analysis includes theoretical constraints from vacuum stability and perturbativity as well as experimental constraints from signal strengths of th...

Full description

Saved in:
Bibliographic Details
Published in:The journal of high energy physics 2013-07, Vol.2013 (7), p.1-20, Article 118
Main Authors: Eberhardt, Otto, Nierste, Ulrich, Wiebusch, Martin
Format: Article
Language:English
Subjects:
Bosons
Classical and Quantum Gravitation
Couplings
Elementary Particles
Flavours
Higgs bosons
High energy physics
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Relativity Theory
Signal strength
Stability
Standard deviation
String Theory
Symmetry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A bstract We determine the allowed parameter space of the CP -conserving two-Higgs-doublet model (2HDM) of type II with a softly broken Z 2 symmetry. Our analysis includes theoretical constraints from vacuum stability and perturbativity as well as experimental constraints from signal strengths of the 126 GeV Higgs boson, the non-observation of additional Higgs resonances and electroweak precision and flavour observables. If the 126 GeV resonance is interpreted as the light CP -even Higgs boson of the 2HDM our analysis shows that scenarios where the couplings of this boson deviate substantially from those of the SM Higgs boson are disfavoured at one standard deviation and completely excluded for small values of tan β . We also discuss bounds on the masses of the heavy 2HDM Higgs bosons and their implications for the possible decay modes of these particles. We find that the region in which both non-standard neutral Higgs bosons are simultaneously lighter than 300 GeV is excluded at two standard deviations.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP07(2013)118