Top Quark Charge Asymmetry: Searching for Light Axigluons in top pair + jet Production at the LHC

Abstract

We investigate the discovery potential of light color-octet bosons in the mass range of 100 - 400 GeV in exclusive top-pair plus jet production at the LHC. We study the impact of such bosons on the incline, the energy and the rapidity asymmetries. We show that light axigluons with large couplings to quarks can be discovered at the LHC with a luminosity of a few inverse fb. Almost all of the considered axigluon parameter space can be probed using the already available 2011/2012 LHC data. In a small-coupling scenario, axigluons could be discovered using the charge asymmetry with 65 inverse fb at the LHC and a center of mass energy of 14 TeV. We furthermore show that top pair+jet production could reveal the existence of scenarios where axigluons couple with a different strength to up- and down-type quarks.

arXiv comment25 pages, 11 figures, 1 table

References in corpus (27)

• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• Top quark pair production and decay at hadron colliders
• NLO QCD corrections to t tbar + jet production at hadron colliders
• Charge asymmetry in hadroproduction of heavy quarks
• Charge asymmetries of top quarks at hadron colliders revisited
• Hadronic top-quark pair-production with one jet and parton showering
• NLO QCD corrections to top quark pair production in association with one hard jet at hadron colliders
• Electroweak effects in top-quark pair production at Hadron Colliders
• Hadronic top-quark pair production in association with a hard jet at next-to-leading order QCD: Phenomenological studies for the Tevatron and the LHC
• Probing the Tevatron t tbar asymmetry at LHC
• Electroweak corrections to top-quark pair production in quark--antiquark annihilation
• Massive Color-Octet Bosons: Bounds on Effects in Top-Quark Pair Production
• Top quark pair production in association with a jet with NLO parton showering
• Shaping the top asymmetry
• Stealth gluons at hadron colliders
• A New Twist on Top Quark Spin Correlations
• Review of new physics effects in t-tbar production
• Phenomenology of a light gluon resonance in top-physics at Tevatron and LHC
• Measurement of the inclusive leptonic asymmetry in top-quark pairs that decay to two charged leptons at CDF
• Shedding light on the $t\bar{t}$ asymmetry: the photon handle
• Transverse Top Quark Polarization and the ttbar Forward-Backward Asymmetry
• Top-Quark Charge Asymmetry Goes Forward: Two New Observables for Hadron Colliders
• Bottom-Quark Forward-Backward Asymmetry in the Standard Model and Beyond
• From Tevatron's top and lepton-based asymmetries to the LHC
• Mixed QCD and Weak Corrections to $t\bar{t}$ Production by Quark-Antiquark Annihilation
• Light axigluon and single top production at the LHC
• Axigluon Phenomenology using ATLAS dijet data

Cited by in corpus (5)

• Measurement of the energy asymmetry in $t\bar{t}j$ production at 13 TeV with the ATLAS experiment and interpretation in the SMEFT framework
• The top quark charge asymmetry in $t\bar{t}\gamma$ production at the LHC
• Measuring the top energy asymmetry at the LHC: QCD and SMEFT interpretations
• Observing the Top Energy Asymmetry at the LHC
• Single lepton charge asymmetries in $t\bar{t}$ and $t\bar{t}\gamma$ production at the LHC