New constraints and discovery potential for Higgs to Higgs cascade decays through vectorlike leptons

Dermíšek, Radovan; Lunghi, Enrico; Shin, Seodong

doi:10.1007/JHEP10(2016)081

Title: New constraints and discovery potential for Higgs to Higgs cascade decays through vectorlike leptons

Journal Article · Mon Oct 17 00:00:00 EDT 2016 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/JHEP10(2016)081· OSTI ID:1425878

Dermíšek, Radovan ^[1]; Lunghi, Enrico ^[2]; Shin, Seodong ^[3]

Indiana Univ., Bloomington, IN (United States); Seoul National Univ. (Korea, Republic of)
Indiana Univ., Bloomington, IN (United States)
Indiana Univ., Bloomington, IN (United States); Yonsei Univ., Seoul (Korea, Republic of )

One of the cleanest signatures of a heavy Higgs boson in models with vectorlike leptons is H→e^±₄ℓ^∓→hℓ⁺ℓ^- which, in two Higgs doublet model type-II, can even be the dominant decay mode of heavy Higgses. Among the decay modes of the standard model like Higgs boson, h, we consider bb¯¯ and γγ as representative channels with sizable and negligible background, respectively. We obtained new model independent limits on production cross section for this process from recasting existing experimental searches and interpret them within the two Higgs doublet model. In addition, we show that these limits can be improved by about two orders of magnitude with appropriate selection cuts immediately with existing data sets. We also discuss expected sensitivities with integrated luminosity up to 3 ab^-1 and present a brief overview of other channels.

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Research Organization:: Harvard Univ., Cambridge, MA (United States); Indiana Univ., Bloomington, IN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: SC0007870; SC0010120

OSTI ID:: 1425878

Journal Information:: Journal of High Energy Physics (Online), Vol. 2016, Issue 10; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 15 works

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References (18)

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