Probing Colored Particles with Photons, Leptons, and Jets

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.

39 pages, 9 figures; v2: more recent searches included

References in corpus (47)

• A Brief Introduction to PYTHIA 8.1
• Parton distributions for the LHC
• MadGraph 5 : Going Beyond
• UFO - The Universal FeynRules Output
• FeynRules - Feynman rules made easy
• Squark and Gluino Production at Hadron Colliders
• NLL resummation of the heavy-quark hadroproduction cross-section
• Search for new particles decaying into dijets in proton-antiproton collisions at sqrt(s) = 1.96 TeV
• Soft radiation in heavy-particle pair production: all-order colour structure and two-loop anomalous dimension
• Electroweak Limits on General New Vector Bosons
• Search for New Physics in Dijet Mass and Angular Distributions in pp Collisions at sqrt(s) = 7 TeV Measured with the ATLAS Detector
• Colored Resonant Signals at the LHC: Largest Rate and Simplest Topology
• Search for New Physics in the Dijet Mass Distribution using 1 fb^-1 of pp Collision Data at sqrt(s) = 7 TeV collected by the ATLAS Detector
• Search for Resonances in the Dilepton Mass Distribution in pp Collisions at sqrt(s) = 7 TeV
• Massive color-octet bosons and pairs of resonances at hadron colliders
• Search for signatures of extra dimensions in the diphoton mass spectrum at the Large Hadron Collider
• Search for narrow resonances in dilepton mass spectra in pp collisions at sqrt(s) = 7 TeV
• Search for microscopic black holes in pp collisions at sqrt(s) = 8 TeV
• Search for Heavy Stable Charged Particles in pp collisions at sqrt(s)=7 TeV
• Color Sextet Scalars at the CERN Large Hadron Collider
• Split Supersymmetry, stable gluino, and gluinonium
• Search for massive colored scalars in four-jet final states in sqrt{s}=7 TeV proton-proton collisions with the ATLAS detector
• Diphoton decays of stoponium at the Large Hadron Collider
• Minimal Matter at the Large Hadron Collider
• Search for Three-Jet Resonances in pp Collisions at sqrt(s) = 7 TeV
• Production and Decay of Scalar Stoponium Bound States
• Annihilation decays of bound states at the LHC
• Search for three-jet resonances in pp collisions at sqrt(s) = 7 TeV
• Bound-state effects on gluino-pair production at hadron colliders
• Search for Large Extra Dimensions in the Diphoton Final State at the Large Hadron Collider
• A new signal for scalar top bound state production
• Gluinonia: Energy Levels, Production and Decay
• Top Quark Signature in Extended Color Theories
• Color Octet Scalar Bound States at the LHC
• QCD corrections to stoponium production at hadron colliders
• Search for narrow resonances using the dijet mass spectrum in pp collisions at sqrt(s) = 8 TeV
• Radiative corrections to stoponium annihilation decays
• Central exclusive production of longlived gluinos at the LHC
• Bound States of Two Gluinos at the Tevatron and LHC
• Searching for Stoponium along with the Higgs boson
• Distinguishing spins at the LHC using bound state signals
• New Measurements with Stopped Particles at the LHC
• Vector Leptoquark Pair Production in $e^{+}{e}^{-}$ Annihilation
• Search for production of resonant states in the photon-jet mass distribution using pp collisions at sqrt(s) = 7 TeV collected by the ATLAS detector
• Fourth Generation Pseudoscalar Quarkonium Production and Observability at Hadron Colliders
• Higher Representations and Multi-Jet Resonances at the LHC
• Hadronization, spin, and lifetimes

Cited by in corpus (33)

• Directions for model building from asymptotic safety
• Very Light Scalar Top Quarks at the LHC
• Search for three-jet resonances in pp collisions at sqrt(s) = 7 TeV
• Loop Induced Single Top Partner Production and Decay at the LHC
• A Reappraisal on Dark Matter Co-annihilating with a Top/Bottom Partner
• A lattice QCD study of generalized gluelumps
• Experimental Status of Supersymmetry after the LHC Run-I
• Exotic Electroweak Signals in Twin Higgs
• Search for gauge-mediated supersymmetry in events with at least one photon and missing transverse momentum in pp collisions at $\sqrt{s}=$ 13 TeV
• Complementarity for Dark Sector Bound States
• Search for supersymmetry with photons in pp collisions at sqrt(s) = 8 TeV
• Can New Colored Particles Illuminate the Higgs?
• Unification with Vector-like fermions and signals at LHC
• Resonances from QCD bound states and the 750 GeV diphoton excess
• Collider Signatures of Coannihilating Dark Matter in Light of the B-Physics Anomalies
• Colorful Twisted Top Partners and Partnerium at the LHC
• Vector-like quarks with non-renormalizable interactions
• Natural Supersymmetry in Warped Space
• Electroweak-Charged Bound States as LHC Probes of Hidden Forces
• Search for supersymmetry in electroweak production with photons and large missing transverse energy in pp collisions at sqrt(s) = 8 TeV
• Bounds and Prospects for Stable Multiply Charged Particles at the LHC
• Diphoton Signals from Colorless Hidden Quarkonia
• Heavy Leptonium as the Origin of the 750 GeV Diphoton Excess
• Explaining the 750 GeV diphoton excess with a colored scalar charged under a new confining gauge interaction
• Models of 750 GeV quarkonium and the LHC excesses
• Exotic colored scalars at the LHC
• Enhanced color gauge invariance and a new di-photon state at the LHC
• Bound States of Pseudo-Dirac Dark Matter
• Di-Higgs Decay of Stoponium at Future Photon-Photon Collider
• The Smallest SU($N$) Hadrons
• Dark Matter Energy Deposition and Production from the Table-Top to the Cosmos
• Model Independent Constraints on Charges of New Particles
• Search for natural supersymmetry in events with top quark pairs and photons in pp collisions at $\sqrt{s}=$ 8 TeV