Tagging Jets in Invisible Higgs Searches

TL;DR

This paper explores advanced jet tagging techniques in invisible Higgs decay searches, emphasizing the role of subjet information and comparing different production modes to improve signal extraction.

Contribution

It introduces novel methods using subjet information for tagging jets and analyzes their effectiveness in invisible Higgs decay searches, including comparisons of production modes.

Findings

Subjet information enhances Higgs signal extraction.

Control of single top production is crucial for analysis accuracy.

Comparison shows differing efficiencies between production modes.

Abstract

Searches for invisible Higgs decays in weak boson fusion are a well-known laboratory for jets and QCD studies. We present a series of results on tagging jets and central jet activity. First, precision analyses of the central jet activity require full control of single top production in some analyses. Second, the rate dependence on the size of the tagging jets is not limited to weak boson fusion. For the first time, we show how subjet information on the tagging jets and on the additional jet activity can be used to extract the Higgs signal. The additional observables relieve some of the pressure on other, critical observables. Finally, we compare the performance of weak boson fusion and associated Higgs production.