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arXiv · 2007.15654

Di-Higgs Blind Spots in Gravitational Wave Signals

Alexandre Alves·Dorival Gonçalves·Tathagata Ghosh·Huai-Ke Guo·Kuver Sinha
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Abstract

Conditions for strong first-order phase transition and generation of observable gravitational wave (GW) signals are very restrictive to the profile of the Higgs potential. Working in the minimal extension of the SM with a new gauge singlet real scalar, we show that the production of signals relevant for future GW experiments, such as LISA, can favor depleted resonant and non-resonant di-Higgs rates at colliders for phenomenologically relevant regimes of scalar mixing angles and masses for the heavy scalar. We perform a comprehensive study on the emergence of these di-Higgs blind spot configurations in GWs and also show that di-boson channels, $ZZ$ and $WW$, can restore the phenomenological complementarities between GW and collider experiments in these parameter space regimes.

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Alexandre Alves, Dorival Gonçalves, Tathagata Ghosh, Huai-Ke Guo, Kuver Sinha. 2020-07-30. Di-Higgs Blind Spots in Gravitational Wave Signals. https://doi.org/10.1016/j.physletb.2021.136377

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