Kaluza-Klein gluon and b-jet forward-backward asymmetry
arXiv:0902.3322 · doi:10.1016/j.physletb.2010.09.057
Abstract
The forward-backward asymmetry of -quark jets on the -pole measured at LEP/SLD experiments shows us -2.8- deviation from the Standard Model (SM) prediction. We examine a possibility of Kaluza-Klein (KK) gluon to explain the $\afbb$ data in a scenario based on the warped extra dimension model by Randall and Sundrum. In this scenario, the KK gluon strongly couples to -quark by an appropriate choice of the bulk quark mass terms. We find that the $\afbb$ data could be explained if the KK gluon mass is few hundred GeV. Constraints on our scenario from the hadron collider experiments are discussed.
5 pages, 4 figures. Version to appear in Phys.Lett.B