Chiral color symmetry and $G^{\prime }$-boson mass limit from Tevatron data on $t\bar{t}$-production

Abstract

A gauge model with chiral color symmetry of quarks is considered and possible effects of the color $G^{\prime }$-boson octet predicted by this symmetry are investigated. The contributions of the $G^{\prime }$-boson to the cross section ${\sigma }_{t\bar{t}}$ and to the forward-backward asymmetry $A_{\mathrm{FB}}^{p\bar{p}}$ of $t\bar{t}$ production at the Tevatron are calculated and analysed in dependence on two free parameters of the model, the mixing angle ${\theta }_G$ and $G^{\prime }$ mass $m_{G^{\prime }}$. The $G^{\prime }$-boson contributions to ${\sigma }_{t\bar{t}}$ and $A_{\mathrm{FB}}^{p\bar{p}}$ are shown to be consistent with the Tevatron data on ${\sigma }_{t\bar{t}}$ and $A_{\mathrm{FB}}^{p\bar{p}}$, the allowed region in the $m_{G^{\prime }}-{\theta }_G$ plane is discussed and around $m_{G^{\prime }}=1.2TeV,{\theta }_G=14^{\circ }$ the region of $1\sigma$ consistency is found.

arXiv comment7 pages, 1 figure. Submitted to Proceedings of the 16th International Seminar on High Energy Physics "QUARKS-2010", Kolomna, Russia, 6-12 June, 2010. Misprints in formula (8) are corrected. All the other results are valid

References in corpus (19)

• Hard Interactions of Quarks and Gluons: a Primer for LHC Physics
• Updated predictions for the total production cross sections of top and of heavier quark pairs at the Tevatron and at the LHC
• Charge asymmetry of heavy quarks at hadron colliders
• The theoretical top quark cross section at the Tevatron and the LHC
• Top Quarks, Axigluons and Charge Asymmetries at Hadron Colliders
• Top quark forward-backward asymmetry from new t-channel physics
• Axigluon as Possible Explanation for $p\bar{p}\to t\bar{t}$ Forward-Backward Asymmetry
• Threshold Resummation for the Top Quark Charge Asymmetry
• Top Quark Forward-Backward Asymmetry
• Explorations of the Top Quark Forward-Backward Asymmetry at the Tevatron
• Light colored scalars from grand unification and the forward-backward asymmetry in top quark pair production
• Forward-Backward Asymmetry of Top Quark Pair Production
• Standard Model Top Quark Asymmetry at the Fermilab Tevatron
• The forward-backward asymmetry of top quark production at the Tevatron in warped extra dimensional models
• Top quark forward-backward asymmetry at the Tevatron: a comparative study in different new physics models
• Massive color-octet bosons and the charge asymmetries of top quarks at hadron colliders
• Forward-backward asymmetry of top quark in diquark models
• Asymmetric Left-Right Model and the Top Pair Forward-Backward Asymmetry
• Predictions for TOTEM experiment at LHC from integral and derivative dispersion relations

Cited by in corpus (1)

• Top polarization, forward-backward asymmetry and new physics