Understanding Jet Scaling and Jet Vetos in Higgs Searches

TL;DR

This work can understand the properties of jets in weak boson fusion Higgs production from the distribution of the exclusive number of jets, which shows either a distinct staircase scaling or a Poisson scaling depending on kinematic cuts.

Abstract

Jet counting and jet vetos are crucial analysis tools for many LHC searches. We can understand their properties from the distribution of the exclusive number of jets. LHC processes tend to show either a distinct staircase scaling or a Poisson scaling, depending on kinematic cuts. We illustrate our approach in a detailed study of jets in weak boson fusion Higgs production.

Figures (4)

• Figure 1: Simulated $R_{(n+1)/n}$ distributions for $Z$+jets and $H$+jets production via the effective $g$-$g$-$H$ coupling. We only apply the basic cuts $p_{Tj}>20 (30)$ GeV and $|y_j|<4.5$ for the solid (dotted) entries. The quoted $n$ values are in addition to the two leading jets.
• Figure 2: $R_{(n+1)/n}$ distributions for electroweak $Z$+jets production and WBF Higgs production. Again, we only apply $p_{Tj}>20$ GeV and $|y_j|<4.5$ and count $n$ in addition to the two leading jets.
• Figure 3: $R_{(n+1)/n}$ distributions for electroweak $Z$+jets production, and Higgs production in weak boson fusion. Unlike in Fig. \ref{['fig:staircase2']} we now count only additional jets in the veto region defined by Eq.\ref{['eq:veto']}.
• Figure 4: $R_{(n+1)/n}$ distributions for $Z$+jets production and Higgs production via the effective gluon-gluon-Higgs coupling. Unlike in Fig. \ref{['fig:staircase1']} we now count only additional jets in the veto region defined by Eq.\ref{['eq:veto']}. The curves are fits to Eq.\ref{['eq:poisson']}.