Limits on 331 vector bosons from LHC proton collision data

TL;DR

This paper establishes new, more stringent experimental limits on 331 vector bileptons using LHC proton collision data, significantly improving previous bounds and including the first limits on singly-charged bileptons.

Contribution

It provides the first experimental limits on singly-charged bileptons within 331 Models and enhances existing bounds on vector bileptons by 60%, using LHC data.

Findings

Most stringent limits on bileptons to date

First limits on singly-charged bileptons in 331 Models

Increased previous experimental bounds by 60%

Abstract

In this paper, limits are set on bileptons masses and couplings in the context of the the 331 Model, as well as generic, non-331 Models predicting bileptons. The following measurable processes are studied: $pp \rightarrow \ell^{+}\ell^{+}\ell^{-}\ell^{-}X$, $pp \rightarrow \ell^{+}\ell^{-} \nu \nu X$ and $pp \rightarrow \ell^{+}\ell^{-} X$. Experimental limits on singly-charged bileptons masses and couplings within 331 Models are also obtained for the first time. With the results, an over 20 year-old experimental limit on vector bileptons is increased by 60\%. The computed limits are now the most stringent ones for these particles.