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The Scale of New Physics from the Higgs Couplings to gg

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arxiv 2203.07410 v1 pith:XIQSJTBL submitted 2022-03-09 hep-ph

classification hep-ph
keywords higgscouplingsphysicsgammascalebeyondreachunitarity
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abstract

Measuring the Higgs couplings accurately at colliders is one of the best routes for finding physics Beyond the Standard Model (BSM). If the measured couplings deviate from the SM predictions, then this would give rise to energy-growing processes that violate tree-level unitarity at some energy scale, indicating new physics. In this paper, we extend previous work on unitarity bounds from the Higgs potential and the Higgs couplings to vector bosons, the top quark, $\gamma\gamma$ and $\gamma Z$; to the Higgs coupling to gg. We show that the scale of new physics could be as low as $\sim 10$ TeV, which although beyond the reach of the LHC, is well within the reach of the future 100-TeV collider, and can also be probed indirectly in the High Luminosity LHC (HL-LHC).

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Cited by 1 Pith paper

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  1. Pseudoscalar Higgs Production at Muon Colliders: The Role of One-Loop Effective Vertices

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    Including one-loop gamma-gamma, gamma-Z, and Z-Z effective vertices can enhance the muon-collider production cross section of the 2HDM pseudoscalar Higgs A by factors of roughly 2 to 20 relative to tree level, with up...

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