First results on Bilepton production based on LHC collision data and predictions for Run II

TL;DR

This paper investigates the potential for discovering doubly-charged vector bileptons at the LHC, deriving new mass bounds from 7 TeV data and predicting future discovery prospects at 13 TeV.

Contribution

First to derive LHC bounds on bilepton masses using 7 TeV data and to project discovery and limit-setting capabilities at 13 TeV.

Findings

Excluded bilepton masses between 200 GeV and 500 GeV at 95% C.L.

Calculated cross-sections at leading order with Calchep.

Estimated luminosities needed for discovery at 13 TeV.

Abstract

The LHC potential for discovering doubly-charged vector bileptons is investigated considering the measurable process $p p$ $\rightarrow$ $\mu^{\mp}\mu^{\mp}\mu^{\pm}\mu^{\pm} X$. The study is performed assuming different bilepton and leptoquark masses. The process cross-section is calculated at leading-order using the \textsc{Calchep} package. Combining the calculation with the latest ATLAS experiment results at a center-of-mass energy of 7 TeV, bounds on bilepton masses based on LHC data are derived for the first time. The results exclude bileptons masses in the range of 200 GeV to 500 GeV at 95\% C.L., depending on the leptoquark mass. Moreover, minimal LHC integrated luminosities needed for discovering and for setting limits on bilepton masses are obtained for 13 TeV center-of-mass energy. Simulated events are passed through a fast parametric detector simulation using the Delphes package.