2HDM neutral scalars under the LHC

Kling, Felix; Su, Shufang; Su, Wei

doi:10.1007/JHEP06(2020)163

Title: 2HDM neutral scalars under the LHC

Journal Article · 26 June 2020 · Journal of High Energy Physics (Online)

DOI: https://doi.org/10.1007/JHEP06(2020)163 · OSTI ID:1646624

Kling, Felix ^[1]; Su, Shufang ^[2];

^[3]

SLAC National Accelerator Lab., Menlo Park, CA (United States)
Univ. of Arizona, Tucson, AZ (United States). Dept. of Physics
Univ. of Adelaide, SA (Australia). ARC Centre of Excellence for Particle Physics at the Terascale. Dept. of Physics

Two Higgs Doublet Models (2HDM) provide a simple framework for new physics models with an extended Higgs sector. The current LHC results, including both direct searches for additional non-Standard Model (SM) Higgs bosons, as well as precision measurements of the SM-like Higgs couplings, already provide strong constraints on the 2HDM parameter spaces. In this paper, we examine those constraints for the neutral scalars in the Type-I and Type-II 2HDM. In addition to the direct search channels with SM final states: H/A → ff¯¯¯, VV, Vh, hh, we study in particular the exotic decay channels of H/A → AZ/HZ once there is a mass hierarchy between the non-SM Higgses. We found that H/A → AZ/H Z channel has unique sensitivity to the alignment limit region which remains unconstrained by conventional searches and Higgs precision measurements. This mode also extends the reach at intermediate tβ for heavy mA that are not covered by the other direct searches.

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Research Organization:: Univ. of Arizona, Tucson, AZ (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Univ. of Adelaide, SA (Australia)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP); Australian Research Council; USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0009913; AC02-76SF00515; DP180102209

OSTI ID:: 1646624

Alternate ID(s):: OSTI ID: 1647233

Journal Information:: Journal of High Energy Physics (Online), Vol. 2020, Issue 6; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 32 works

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