Advanced

Heavy charged scalars from cs¯ fusion : a generic search strategy applied to a 3HDM with U(1) × U(1) family symmetry

Camargo-Molina, José Eliel LU ; Mandal, Tanumoy; Pasechnik, Roman LU and Wessén, Jonas LU (2018) In Journal of High Energy Physics 2018(3).
Abstract

We describe a class of three Higgs doublet models (3HDMs) with a softly broken U(1) × U(1) family symmetry that enforces a Cabibbo-like quark mixing while forbidding tree-level flavour changing neutral currents. The hierarchy in the observed quark masses is partly explained by a softer hierarchy in the vacuum expectation values of the three Higgs doublets. As a consequence, the physical scalar spectrum contains a Standard Model (SM) like Higgs boson h125 while exotic scalars couple the strongest to the second quark family, leading to rather unconventional discovery channels that could be probed at the Large Hadron Collider. In particular, we describe a search strategy for the lightest charged Higgs boson H±,... (More)

We describe a class of three Higgs doublet models (3HDMs) with a softly broken U(1) × U(1) family symmetry that enforces a Cabibbo-like quark mixing while forbidding tree-level flavour changing neutral currents. The hierarchy in the observed quark masses is partly explained by a softer hierarchy in the vacuum expectation values of the three Higgs doublets. As a consequence, the physical scalar spectrum contains a Standard Model (SM) like Higgs boson h125 while exotic scalars couple the strongest to the second quark family, leading to rather unconventional discovery channels that could be probed at the Large Hadron Collider. In particular, we describe a search strategy for the lightest charged Higgs boson H±, through the process cs¯ → H+→ W+h125, using a multivariate analysis that leads to an excellent discriminatory power against the SM background. Although the analysis is applied to the proposed class of 3HDMs, we employ a model-independent formulation such that it can be applied to any other model with the same discovery channel.

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Beyond Standard Model, Higgs Physics, Quark Masses and SM Parameters
in
Journal of High Energy Physics
volume
2018
issue
3
publisher
Springer Verlag
external identifiers
  • scopus:85043359982
ISSN
1126-6708
DOI
10.1007/JHEP03(2018)024
language
English
LU publication?
yes
id
deb68484-0055-4cf3-ab59-d7bff30ede8e
date added to LUP
2018-03-20 13:31:57
date last changed
2019-02-20 11:11:23
@article{deb68484-0055-4cf3-ab59-d7bff30ede8e,
  abstract     = {<p>We describe a class of three Higgs doublet models (3HDMs) with a softly broken U(1) × U(1) family symmetry that enforces a Cabibbo-like quark mixing while forbidding tree-level flavour changing neutral currents. The hierarchy in the observed quark masses is partly explained by a softer hierarchy in the vacuum expectation values of the three Higgs doublets. As a consequence, the physical scalar spectrum contains a Standard Model (SM) like Higgs boson h<sub>125</sub> while exotic scalars couple the strongest to the second quark family, leading to rather unconventional discovery channels that could be probed at the Large Hadron Collider. In particular, we describe a search strategy for the lightest charged Higgs boson H<sup>±</sup>, through the process cs¯ → H<sup>+</sup>→ W<sup>+</sup>h<sub>125</sub>, using a multivariate analysis that leads to an excellent discriminatory power against the SM background. Although the analysis is applied to the proposed class of 3HDMs, we employ a model-independent formulation such that it can be applied to any other model with the same discovery channel.</p>},
  articleno    = {24},
  author       = {Camargo-Molina, José Eliel and Mandal, Tanumoy and Pasechnik, Roman and Wessén, Jonas},
  issn         = {1126-6708},
  keyword      = {Beyond Standard Model,Higgs Physics,Quark Masses and SM Parameters},
  language     = {eng},
  month        = {03},
  number       = {3},
  publisher    = {Springer Verlag},
  series       = {Journal of High Energy Physics},
  title        = {Heavy charged scalars from cs¯ fusion : a generic search strategy applied to a 3HDM with U(1) × U(1) family symmetry},
  url          = {http://dx.doi.org/10.1007/JHEP03(2018)024},
  volume       = {2018},
  year         = {2018},
}