NLO QCD effects on angular observables in single Higgs production at electron-proton collider

TL;DR

This paper investigates the impact of NLO QCD corrections on angular observables in single Higgs production at electron-proton colliders, enhancing the precision of Higgs coupling measurements beyond leading order predictions.

Contribution

It provides the first analysis of NLO QCD effects on angular observables in Higgs production at eP colliders, improving the accuracy of Higgs coupling constraints.

Findings

NLO QCD corrections significantly affect angular distributions.

Enhanced precision in constraining anomalous $HVV$ couplings.

Improved theoretical predictions for future collider analyses.

Abstract

Properties of the Higgs boson ($H$) at current and future particle colliders are crucial to explore new physics beyond the standard model. In particular, experimental and theoretical outlooks at future colliders drive interest in Higgs to gauge boson couplings. Single Higgs production via vector-boson fusion allows probing Higgs couplings with massive vector bosons ($V = W, Z$). We consider electron-proton (eP) collider to study these couplings due to the low background. In a recent study, we considered the most general anomalous Higgs-vector boson ($HVV$) couplings and explored the potential of eP collider in constraining the parameters of $HVV$ couplings. Our results were based on leading order predictions in perturbation theory. We include further Next to Leading Order (NLO) corrections of Quantum Chromodynamic (QCD) in Standard Model signal to make precise predictions. In this talk, I will present the effect of NLO QCD corrections on the standard model and anomalous $HVV$ couplings.