Almost inert Higgs bosons at the LHC
Abstract
Nonminimal Higgs sectors are strongly constrained by the agreement of the measured couplings of the 125 GeV Higgs with Standard Model predictions. This agreement can be explained by an approximate $$\mathbb{Z}_{2}$$ symmetry under which the additional Higgs bosons are odd. This allows the additional Higgs bosons to be approximately inert, meaning that they have suppressed VEVs and suppressed mixing with the Standard Model Higgs. In this case, single production of the new Higgs bosons is suppressed, but electroweak pair production is unsuppressed. We study the phenomenology of a minimal 2 Higgs doublet model that realizes this scenario. In a wide range of parameters, the phenomenology of the model is essentially fixed by the masses of the exotic Higgs bosons, and can therefore be explored systematically. We study a number of different plausible signals in this model, and show that several LHC searches can constrain or discover additional Higgs bosons in this parameter space. We find that the reach is significantly extended at the high luminosity LHC.
 Authors:

 Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States). Theoretical Physics Dept.
 Univ. of California, Davis, CA (United States). Center for Quantum Mathematics and Physics (QMAP)
 Univ. Técnica Federico Santa Marıa, Valparaíso (Chile). Dept. of Physics and CCTVal
 Publication Date:
 Research Org.:
 Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
 Sponsoring Org.:
 USDOE Office of Science (SC), High Energy Physics (HEP) (SC25)
 OSTI Identifier:
 1569243
 Report Number(s):
 arXiv:1812.08179; FERMILABPUB19514T
Journal ID: ISSN 10298479; oai:inspirehep.net:1710376
 Grant/Contract Number:
 AC0207CH11359
 Resource Type:
 Journal Article: Accepted Manuscript
 Journal Name:
 Journal of High Energy Physics (Online)
 Additional Journal Information:
 Journal Volume: 2019; Journal Issue: 9; Journal ID: ISSN 10298479
 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
Gao, Christina, Luty, Markus A., and Neill, Nicolás A. Almost inert Higgs bosons at the LHC. United States: N. p., 2019.
Web. doi:10.1007/JHEP09(2019)043.
Gao, Christina, Luty, Markus A., & Neill, Nicolás A. Almost inert Higgs bosons at the LHC. United States. doi:10.1007/JHEP09(2019)043.
Gao, Christina, Luty, Markus A., and Neill, Nicolás A. Fri .
"Almost inert Higgs bosons at the LHC". United States. doi:10.1007/JHEP09(2019)043. https://www.osti.gov/servlets/purl/1569243.
@article{osti_1569243,
title = {Almost inert Higgs bosons at the LHC},
author = {Gao, Christina and Luty, Markus A. and Neill, Nicolás A.},
abstractNote = {Nonminimal Higgs sectors are strongly constrained by the agreement of the measured couplings of the 125 GeV Higgs with Standard Model predictions. This agreement can be explained by an approximate $\mathbb{Z}_{2}$ symmetry under which the additional Higgs bosons are odd. This allows the additional Higgs bosons to be approximately inert, meaning that they have suppressed VEVs and suppressed mixing with the Standard Model Higgs. In this case, single production of the new Higgs bosons is suppressed, but electroweak pair production is unsuppressed. We study the phenomenology of a minimal 2 Higgs doublet model that realizes this scenario. In a wide range of parameters, the phenomenology of the model is essentially fixed by the masses of the exotic Higgs bosons, and can therefore be explored systematically. We study a number of different plausible signals in this model, and show that several LHC searches can constrain or discover additional Higgs bosons in this parameter space. We find that the reach is significantly extended at the high luminosity LHC.},
doi = {10.1007/JHEP09(2019)043},
journal = {Journal of High Energy Physics (Online)},
issn = {10298479},
number = 9,
volume = 2019,
place = {United States},
year = {2019},
month = {9}
}
Figures / Tables:
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Figures / Tables found in this record: