Oct 18 – 22, 2021
America/New_York timezone

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

Oct 20, 2021, 9:10 AM
Parallel Sessions Higgs-boson properties Parallel: Precision and Properties


Han Qin (University of Pittsburgh)


We explore the new physics reach for the off-shell Higgs boson measurement in the $pp \to H^* \rightarrow Z(\ell^{+}\ell^{-})Z(\nu\bar{\nu})$ 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.

Primary authors

Dorival Gonçalves (Oklahoma State University) Han Qin (University of Pittsburgh) Sze Ching Iris Leung (University of Pittsburgh) Tao Han (University of Pittsburgh)

Presentation materials