Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

New limits on tan β for 2HDMs with Z2 symmetry

Das, Dipankar LU (2015) In International Journal of Modern Physics A 30(26).
Abstract

In two-Higgs-doublet models with exact Z2 symmetry, putting mh ≃ 125 GeV at the alignment limit, the following limits on the heavy scalar masses are obtained from the conditions of unitarity and stability of the scalar potential: mH, mA, mH+ < 1 TeV and 1/8 < tan β < 8. The constraints from b → sγ and neutral meson mass differences, when superimposed on the unitarity constraints, put a tighter lower limit on tan β depending on mH+. It has also been shown that larger values of tan β can be allowed by introducing soft breaking term in the potential at the expense of a correlation between mH and the soft breaking parameter.

Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Two Higgs doublet model
in
International Journal of Modern Physics A
volume
30
issue
26
article number
1550158
publisher
World Scientific Publishing
external identifiers
  • scopus:84942056816
ISSN
0217-751X
DOI
10.1142/S0217751X15501584
language
English
LU publication?
no
id
06e9436e-632a-4d7b-bc20-c5b05b45e1c4
date added to LUP
2019-05-22 15:31:23
date last changed
2022-01-31 20:43:20
@article{06e9436e-632a-4d7b-bc20-c5b05b45e1c4,
  abstract     = {{<p>In two-Higgs-doublet models with exact Z2 symmetry, putting m<sub>h</sub> ≃ 125 GeV at the alignment limit, the following limits on the heavy scalar masses are obtained from the conditions of unitarity and stability of the scalar potential: m<sub>H</sub>, m<sub>A</sub>, m<sub>H+</sub> &lt; 1 TeV and 1/8 &lt; tan β &lt; 8. The constraints from b → sγ and neutral meson mass differences, when superimposed on the unitarity constraints, put a tighter lower limit on tan β depending on m<sub>H+</sub>. It has also been shown that larger values of tan β can be allowed by introducing soft breaking term in the potential at the expense of a correlation between m<sub>H</sub> and the soft breaking parameter.</p>}},
  author       = {{Das, Dipankar}},
  issn         = {{0217-751X}},
  keywords     = {{Two Higgs doublet model}},
  language     = {{eng}},
  month        = {{09}},
  number       = {{26}},
  publisher    = {{World Scientific Publishing}},
  series       = {{International Journal of Modern Physics A}},
  title        = {{New limits on tan β for 2HDMs with Z<sub>2</sub> symmetry}},
  url          = {{http://dx.doi.org/10.1142/S0217751X15501584}},
  doi          = {{10.1142/S0217751X15501584}},
  volume       = {{30}},
  year         = {{2015}},
}