Leptoquark/Squark Interpretation of HERA Events: Virtual Effects in e+e- Annihilation to Hadrons

Abstract

In reference to the recently observed high Q^2, large x events in deep-inelastic positron-proton scattering at HERA, various leptoquark and supersymmetric scenarios are discussed. We study the impact of virtual leptoquark or R-parity breaking squark exchange as well as generic contact interaction on the production of quark-antiquark pairs in $e^{+}{e}^{-}$ annihilation, in particular at LEP2.

LaTeX file, 20 pages, 7 figures, uses epsfig, typos fixed, a few general references added

Cited by in corpus (52)

• R-parity violating supersymmetry
• Electroweak Measurements in Electron-Positron Collisions at W-Boson-Pair Energies at LEP
• Physics of leptoquarks in precision experiments and at particle colliders
• Pair production of scalar leptoquarks at the LHC
• Flavor-changing Top Quark Decays In R-Parity Violating SUSY
• A supersymmetric solution to the KARMEN time anomaly
• Fermion pair production in e+e- collisions at 189-209 GeV and constraints on physics beyond the Standard Model
• Combined Constraints on First Generation Leptoquarks
• Measurement and Interpretation of Fermion-Pair Production at LEP Energies of 183 and 189 GeV
• R-parity-violating SUSY effects and signals in single top production at the Tevatron
• Resonant Slepton Production in Hadron-Hadron Collisions
• Improved bounds on SUSY accompanied neutrinoless double beta decay
• R-Parity Violating SUSY Signals in Lepton-Pair Production at the Tevatron
• Global Study of Electron-Quark Contact Interactions
• Supersymmetric NLO QCD Corrections to Resonant Slepton Production and Signals at the Tevatron and the LHC
• Single top quark production as a probe of R-parity-violating SUSY at pp and p\bar p colliders
• Search for Compositeness, Leptoquarks and Large Extra Dimensions in eq Contact Interactions at HERA
• Search for contact interactions, large extra dimensions and finite quark radius in ep collisions at HERA
• Atomic parity violation in cesium and implications for new physics
• Constraints from Precision Electroweak Data on Leptoquarks and Bileptons
• High Q2-Anomaly at HERA and Supersymmetry
• Search for new physics in e^\pm q contact interactions at HERA
• Manifestations of R-Parity Violation in Ultrahigh-Energy Neutrino Interactions
• Signal and Backgrounds for Leptoquarks at the LHC
• What if Charged Current Events at Large Q2 are Observed at HERA ?
• QCD Corrections to Resonant Slepton Production in Hadron Colliders
• Stops in R-parity Breaking Model for High-$Q^2$ Events at HERA
• Search for Contact Interactions in e^{\pm}p Collisions at HERA
• Search for Leptoquarks in Electron-Photon Scattering at sqrt(s_ee) up to 209 GeV at LEP
• Don't Stop Thinking About Leptoquarks: Constructing New Models
• Limits on contact interactions and leptoquarks at HERA
• Supersymmetry and Charged Current Events at HERA
• Measuring R-parity-violating couplings in dilepton production at the LHC
• Signal and Backgrounds for the Single Production of Scalar and Vector Leptoquarks at the LHC
• Perturbative Fragmentation of Leptoquark into Heavy Lepto-Quarkonium
• Model-independent limits on four-fermion contact interactions at LC with polarization
• Systematics of single superpartners production at leptonic colliders
• Tagging Sneutrino Resonances at a Linear Collider with Associated Photons
• Report of the 1997 LEP2 Phenomenology Working Group on `Searches' (Oxford)
• Supersymmetric interpretation of high--$Q^2$ HERA events and other related issues
• Effects of lepton number violating interactions on $t\bar{t}$ production at NLC
• NNLO QCD corrections to the resonant sneutrino/slepton production at Hadron Colliders
• Implications of the HERA Events for the R-Parity Breaking SUSY Signals at Tevatron
• Signal and Backgrounds for Leptoquarks at the LHC II: Vector Leptoquarks
• Impact on SUSY-Breaking Models of the $R$-Parity Violating Squark Interpretation of the HERA Anomaly
• Exotic leptoquarks from superstring derived models
• Search for New Physics with Neutrinoless Double Beta Decay
• Prospects of Squark & Slepton searches at a Gamma Gamma Collider
• Single leptoquark production at high-energy e+ e- colliders
• Contact Interactions with Polarized Beams at HERA
• High $Q^2$ Physics at HERA and Searches for New Particles
• Current constraints on squark production scenarios for the excess of high $Q^2$ events at HERA