Four Weak Boson Production in Tev Photon--Photon Collisions and Heavy Higgs Signal

TL;DR

This paper investigates the potential to detect a heavy Higgs boson up to 1 TeV mass at a 2 TeV photon linear collider by analyzing four weak boson production processes with specific tagging and veto strategies.

Contribution

First complete tree level calculation of four weak boson production in photon-photon collisions for heavy Higgs detection.

Findings

Invariant mass spectrum of WW and ZZ pairs is sensitive to Higgs masses up to 1 TeV.

Using spectator W tags and vetoes effectively suppresses backgrounds.

Detection is feasible at a 2 TeV linear collider.

Abstract

We study the signals for a heavy Higgs boson in the processes $\gamma\gamma\to WWWW$, $\gamma\gamma\to WWZZ$ at the photon linear collider. The results are based on the first complete tree level calculation for these reactions. Using a forward ``spectator" $W$ tag, central ``spectator" $W$ veto to suppress backgrounds from transverse $W$, $Z$ production we show that the invariant mass spectrum of central $WW$, $ZZ$ pairs is sensitive to Higgs boson with a mass up to 1~TeV at a 2~TeV linear collider.