Connection between diphoton and triboson channels in new physics searches

TL;DR

This paper explores the theoretical connection between diphoton and triboson channels in new physics searches, highlighting how symmetries of the Standard Model relate different experimental signatures and proposing potential discovery channels at the LHC.

Contribution

It demonstrates a model linking diphoton and triboson channels through SM symmetries, suggesting new search strategies involving $WW ext{ and }Z ext{ plus MET}$ at the LHC.

Findings

Channels $WW ext{ and }Z ext{ plus MET}$ have potential for discovery.

Existing constraints do not exclude these channels as discovery modes.

The model connects different signatures via SM symmetry principles.

Abstract

Diphoton channel provides a clean signature in searches for new physics. In this paper, we discuss a connection between the diphoton channel ($\gamma\gamma$) and triboson channels ($Z\gamma\gamma$, $ZZ\gamma$, $WW\gamma$) imposed by the $SU(2)_{L}\times U(1)_{Y}$ symmetry of the Standard Model (SM) in certain classes of models. To illustrate this idea we choose a simple model that has all these channels. In this model, the same physics can give rise to $\gamma+$MET instead of $\gamma\gamma$ and 2 bosons plus missing energy instead of 3-boson channels. We analyze existing constraints and previous searches and show that channels $WW\gamma$ and especially $Z\gamma+$MET have a potential to discover new physics at the LHC.