Probing the fermionic Higgs portal at lepton colliders

Fedderke, Michael A.; Lin, Tongyan; Wang, Lian -Tao

doi:10.1007/JHEP04(2016)160

Title: Probing the fermionic Higgs portal at lepton colliders

Journal Article · Tue Apr 26 00:00:00 EDT 2016 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/JHEP04(2016)160· OSTI ID:1326959

Fedderke, Michael A. ^[1]; Lin, Tongyan ^[1]; Wang, Lian -Tao ^[1]

The Univ. of Chicago, Chicago, IL (United States)

Here, we study the sensitivity of future electron-positron colliders to UV completions of the fermionic Higgs portal operator H^†Hχ¯χ. Measurements of precision electroweak S and T parameters and the e⁺e^– → Zh cross-section at the CEPC, FCC-ee, and ILC are considered. The scalar completion of the fermionic Higgs portal is closely related to the scalar Higgs portal, and we summarize existing results. We devote the bulk of our analysis to a singlet-doublet fermion completion. Assuming the doublet is sufficiently heavy, we construct the effective field theory (EFT) at dimension-6 in order to compute contributions to the observables. We also provide full one-loop results for S and T in the general mass parameter space. In both completions, future precision measurements can probe the new states at the (multi-)TeV scale, beyond the direct reach of the LHC.

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Research Organization:: Princeton Univ., NJ (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: SC0003930

OSTI ID:: 1326959

Journal Information:: Journal of High Energy Physics (Online), Vol. 2016, Issue 4; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 25 works

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Impact of fermionic electroweak multiplet dark matter on vacuum stability with one-loop matching Wang, Jin-Wei; Bi, Xiao-Jun; Yin, Peng-Fei Physical Review D, Vol. 99, Issue 5 https://doi.org/10.1103/physrevd.99.055009	journal	March 2019
Charged lepton flavor violating Higgs decays at future $$e^+e^-$$ e + e - colliders Qin, Qin; Li, Qiang; Lü, Cai-Dian The European Physical Journal C, Vol. 78, Issue 10 https://doi.org/10.1140/epjc/s10052-018-6298-7	journal	October 2018
Charged lepton flavor violating Higgs decays at future $e^+e^-$ colliders Qin, Qin; Li, Qiang; Lü, Cai-Dian arXiv https://doi.org/10.48550/arxiv.1711.07243	text	January 2017

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