Looking for leptogluons

TL;DR

This paper reports on a search for leptogluons at the LHC using NLO predictions, highlighting quantum effects, collider signatures, and setting a mass limit of 1.2-1.3 TeV based on CMS data.

Contribution

It provides the first NLO predictions for leptogluon pair production and derives new mass bounds from collider data, improving previous constraints.

Findings

Quantum effects are sizable and dominated by QCD corrections.

Excellent agreement between fixed-order and multi-jet predictions.

Mass bounds of 1.2-1.3 TeV for charged leptogluons derived from CMS data.

Abstract

We present search results based on next-to-leading order predictions for the pair production of color-adjoint leptons at the LHC. Quantum effects are sizable, dominated by pure QCD corrections, and sensitive to threshold effects. We illustrate the stabilization of scale dependences and confirm an excellent agreement between fixed-order and multi-jet predictions for representative distributions. Finally, we examine the trademark collider signatures of leptogluon pairs. Based on the CMS leptoquark search we derive a mass bound of 1.2-1.3 TeV for charged leptogluons, significantly improving the constraints available in the literature.