Minimal Matter at the Large Hadron Collider

TL;DR

This paper classifies potential new particles that could be detected at the LHC, analyzing their signals and proposing search strategies based on their gauge interactions and decay signatures.

Contribution

It provides a comprehensive classification of new U(1) x SU(2) x SU(3) multiplets and outlines their expected signals and search strategies at the LHC.

Findings

Identifies five main classes of signals at the LHC.

Proposes specific search strategies for each class.

Analyzes SM backgrounds for these new particle signals.

Abstract

We classify all possible new U(1) x SU(2) x SU(3) multiplets that can couple to pairs of SM particles. Assuming that production of such new particles is dominated by their gauge interactions we study their signals at LHC, finding the following five main classes: i) lepto-quark 2l 2q signals; ii) di-lepton 4l signals; iii) di-quarks 4j signals, iv) heavy-lepton 2l 2V signals and v) heavy quarks 2j 2V signals, where V denotes heavy SM vectors (with W being associated to exotic fermions). In each case we outilne the most promising final states, the SM backgrounds and propose the needed searches.