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Title: Almost inert Higgs bosons at the LHC

Journal Article · · Journal of High Energy Physics (Online)
ORCiD logo [1];  [2];  [3]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States). Theoretical Physics Dept.
  2. Univ. of California, Davis, CA (United States). Center for Quantum Mathematics and Physics (QMAP)
  3. Univ. Técnica Federico Santa Marıa, Valparaíso (Chile). Dept. of Physics and CCTVal
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Non-minimal 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.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
1569243
Report Number(s):
arXiv:1812.08179; FERMILAB-PUB-19-514-T; oai:inspirehep.net:1710376; TRN: US2001281
Journal Information:
Journal of High Energy Physics (Online), Vol. 2019, Issue 9; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

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Figures / Tables (16)

Figure 1(p. 4)figure Figure 1
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Table 1(p. 12)table Table 1
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Table 3(p. 17)table Table 3
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Table 5(p. 19)table Table 5
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Table 8(p. 23)table Table 8

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Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Beyond Standard Model
Higgs physics