The chiral color symmetry and g -boson mass limit from new tevatron data on tt production

Abstract

A gauge model with chiral color symmetry of quarks is considered and possible effects of the color G -boson octet predicted by this symmetry are investigated. The contributions of the G -boson to the cross section σtt and to the forward-backward asymmetry App of tt production at the Tevatron are calculated and analysed in dependence on two free parameters of the model, the mixing angle θG and G mass mG , in comparision with the new Tevatron data on App . The G -boson contributions to σtt and App are shown to be consistent with the Tevatron data on σtt and App , the allowed region in the -θG consistency is found.

Keywords

• beyond of standart model
• chiral color symmetry
• axigluon
• massive color octet
• g -boson
• top quark physics