Constraining heavy colored resonances from top-antitop quark events

Abstract

Recent measurements of the top quark charge asymmetry at Tevatron disfavor the existence of flavor universal axigluons and colorons at 2 sigmas. In this letter we explore the possibility to reconcile the data with these models and use the charge asymmetry and the invariant mass distribution of top-antitop quark pair events to constrain the mass and couplings of massive color-octet gauge bosons decaying to top quarks.

4 pages, 4 figures. References added, final version to appear in Phys.Rev.D

References in corpus (7)

• First measurement of the forward-backward charge asymmetry in top quark pair production
• The Bulk RS KK-gluon at the LHC
• Top Quarks, Axigluons and Charge Asymmetries at Hadron Colliders
• Threshold Resummation for the Top Quark Charge Asymmetry
• Massive color-octet bosons and the charge asymmetries of top quarks at hadron colliders
• Search for the Production of Narrow tb Resonances in 1.9 fb-1 of ppbar Collisions at sqrt(s) = 1.96 TeV
• Extra Gauge Invariance from an Extra Dimension

Cited by in corpus (10)

• Probing the Tevatron t tbar asymmetry at LHC
• Top Quark Forward-Backward Asymmetry and Same-Sign Top Quark Pairs
• Axigluons cannot explain the observed top quark forward-backward asymmetry
• Forward-backward asymmetry of top quark in unparticle physics
• Top quark forward-backward asymmetry at Tevatron and its implications at the LHC
• Gluon excitations in t tbar production at hadron colliders
• On mass limit for chiral color symmetry $G^{\prime }$-boson from Tevatron data on $t\bar{t}$ production
• Evidence for a Mass Dependent Forward-Backward Asymmetry in Top Quark Pair Production
• Constraining Spin-One Color-Octet Resonances Using CDF and ATLAS Data
• Bottom Pair Production and Search for Heavy Resonances