Model-independent determination of the triple Higgs coupling at e + e − colliders

Barklow, Tim; Fujii, Keisuke; Jung, Sunghoon; Peskin, Michael E.; Tian, Junping

doi:10.1103/PhysRevD.97.053004

Title: Model-independent determination of the triple Higgs coupling at $e^{+} e^{-}$ colliders

Journal Article · Tue Mar 20 00:00:00 EDT 2018 · Physical Review. D.

DOI:https://doi.org/10.1103/PhysRevD.97.053004· OSTI ID:1427333

Barklow, Tim; Fujii, Keisuke; Jung, Sunghoon; Peskin, Michael E.; Tian, Junping

Here, the observation of Higgs pair production at high-energy colliders can give evidence for the presence of a triple Higgs coupling. However, the actual determination of the value of this coupling is more difficult. In the context of general models for new physics, double Higgs production processes can receive contributions from many possible beyond-Standard-Model effects. This dependence must be understood if one is to make a definite statement about the deviation of the Higgs field potential from the Standard Model. In this paper, we study the extraction of the triple Higgs coupling from the process e⁺e^–→Zhh. We show that, by combining the measurement of this process with other measurements available at a 500 GeV e⁺e^– collider, it is possible to quote model-independent limits on the effective field theory parameter c₆ that parametrizes modifications of the Higgs potential. We present precise error estimates based on the anticipated International Linear Collider physics program, studied with full simulation. Our analysis also gives new insight into the model-independent extraction of the Higgs boson coupling constants and total width from e⁺e^– data.

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Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02–76SF00515; 2015R1A4A1042542; 2017R1D1A1B03030820; 16H02173; 16H02176; 15H02083

OSTI ID:: 1427333

Alternate ID(s):: OSTI ID: 1436965

Report Number(s):: SLAC–PUB-17130; PRVDAQ; 053004

Journal Information:: Physical Review. D., Journal Name: Physical Review. D. Vol. 97 Journal Issue: 5; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 30 works

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References (42)

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