Boosted Higgs Channels

TL;DR

This paper proposes a method to detect new physics in Higgs production by analyzing boosted Higgs events recoiling against high-$p_T$ jets, providing an alternative way to measure the top Yukawa coupling.

Contribution

It introduces a novel analysis technique using boosted Higgs events to disentangle effects of new physics in gluon fusion and measure the top Yukawa coupling.

Findings

Boosted Higgs analysis can break degeneracies in Higgs coupling measurements.

The proposed method offers an alternative to the $t\bar{t}H$ channel for top Yukawa determination.

This approach enhances sensitivity to new colored particles affecting Higgs production.

Abstract

In gluon fusion both a modified top Yukawa and new colored particles can alter the cross section. However in a large set of composite Higgs models and in realistic areas of the MSSM parameter space, these two effects can conspire and hide new physics in a Standard Model-like inclusive cross section. We first show that it is possible to break this degeneracy in the couplings by demanding a boosted Higgs recoiling against a high-$p_T$ jet. Subsequently we propose an analysis based on this idea in the $H\to2\ell+E\!\!/_T$ channels. This measurement allows an alternative determination of the important top Yukawa besides the $t\bar t H$ channel.