Probing colored particles with photons, leptons, and jets

Yevgeny Kats, Matthew J. Strassler

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

If pairs of new colored particles are produced at the Large Hadron Collider, determining their quantum numbers, and even discovering them, can be non-trivial. We suggest that valuable information can be obtained by measuring the resonant signals of their near-threshold QCD bound states. If the particles are charged, the resulting signatures include photons and leptons and are sufficiently rich for unambiguously determining their various quantum numbers, including the charge, color representation and spin, and obtaining a precise mass measurement. These signals provide well-motivated benchmark models for resonance searches in the dijet, photon+jet, diphoton and dilepton channels. While these measurements require that the lifetime of the new particles be not too short, the resulting limits, unlike those from direct searches for pair production above threshold, do not depend on the particles' decay modes. These limits may be competitive with more direct searches if the particles decay in an obscure way.

Original languageEnglish
Article number97
JournalJournal of High Energy Physics
Volume2012
Issue number11
DOIs
StatePublished - 1 Jan 2012
Externally publishedYes

Keywords

  • Beyond standard model
  • Heavy quark physics
  • QCD

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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