Top Quark Pairs at High Invariant Mass - A Model-Independent Discriminator of New Physics at the LHC

Abstract

We study top quark pair production to probe new physics at the LHC. We propose reconstruction methods for $t\bar{t}$ semileptonic events and use them to reconstruct the $t\bar{t}$ invariant mass. The angular distribution of top quarks in their c.m. frame can determine the spin and production subprocess for each new physics resonance. Forward-backward asymmetry and CP-odd variables can be constructed to further delineate the nature of new physics. We parametrize the new resonances with a few generic parameters and show high invariant mass top pair production may provide an early indicator for new physics beyond the Standard Model.

5 pages, 4 figures; version to appear in PRL

References in corpus (1)

• The Minimal Quiver Standard Model

Cited by in corpus (36)

• Strategies to Identify Boosted Tops
• LHC Signals for Warped Electroweak Neutral Gauge Bosons
• Top pair invariant mass distribution: a window on new physics
• Efficient Identification of Boosted Semileptonic Top Quarks at the LHC
• Colored Resonant Signals at the LHC: Largest Rate and Simplest Topology
• Top Jets at the LHC
• Color-octet scalars at the LHC
• LHC Signals for Warped Electroweak Charged Gauge Bosons
• Color Sextet Scalars at the CERN Large Hadron Collider
• Tevatron Asymmetry of Tops in a W',Z' Model
• The "Top Priority" at the LHC
• Top-antitop and Top-top Resonances in the Dilepton Channel at the CERN LHC
• Boosted Semileptonic Tops in Stop Decays
• High p_T Top Quarks at the Large Hadron Collider
• Searching for t-bar t Resonances at the Large Hadron Collider
• Chiral Couplings of W' and Top Quark Polarization at the LHC
• Grand Unification and Light Color-Octet Scalars at the LHC
• Measurement of the charge asymmetry in dileptonic decays of top quark pairs in $pp$ collisions at $\sqrt{s}=7$ TeV using the ATLAS detector
• Next-to-leading order QCD corrections to a heavy resonance production and decay into top quark pair at the LHC
• Identification of Extra Neutral Gauge Bosons at the LHC Using b- and t-Quarks
• Unravelling an Extra Neutral Gauge Boson at the LHC using Third Generation Fermions
• Identifying Multi-Top Events from Gluino Decay at the LHC
• Di-Higgs Peaks and Top Valleys: Interference Effects in Higgs Sector Extensions
• Supersymmetry without a light Higgs boson at the LHC
• Interference Effects in $t\bar{t}$ Production at the LHC as a Window on New Physics
• LHC and dark matter signals of Z' bosons
• Effective field theory and scalar extensions of the top quark sector
• Precise tests of the axion coupling to tops
• Resonant top pair searches at the LHC: a window to electroweak phase transition
• Top Quark Production from Black Holes at the CERN LHC
• Signals of supersymmetry with inaccessible first two families at the Large Hadron Collider
• SUSY backgrounds to Standard Model calibration processes at the LHC
• ALP-ine quests at the LHC: hunting axion-like particles via peaks and dips in $t\bar{t}$ production
• Polarization of top quark in vector-like quark decay
• String Theory at LHC Using Top Quarks From String Balls
• On interference effects in top-philic decay chains