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arXiv · 2012.05272

Off-shell Higgs Couplings in $H^*\to ZZ\to \ell\ellνν$

Dorival Gonçalves·Tao Han·Sze Ching Iris Leung·Han Qin
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Abstract

We explore the new physics reach for the off-shell Higgs boson measurement in the ${pp \to H^* \rightarrow Z(\ell^{+}\ell^{-})Z(ν\barν)}$ channel at the high-luminosity LHC. The new physics sensitivity is parametrized in terms of the Higgs boson width, effective field theory framework, and a non-local Higgs-top coupling form factor. Adopting Machine-learning techniques, we demonstrate that the combination of a large signal rate and a precise phenomenological probe for the process energy scale, due to the transverse $ZZ$ mass, leads to significant sensitivities beyond the existing results in the literature for the new physics scenarios considered.

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Dorival Gonçalves, Tao Han, Sze Ching Iris Leung, Han Qin. 2020-12-09. Off-shell Higgs Couplings in $H^*\to ZZ\to \ell\ellνν$. https://doi.org/10.1016/j.physletb.2021.136329

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