Forward-backward asymmetry of top quark in unparticle physics

作者：Chen Chuan Hung; Cvetic G; Kim C S^*

来源：Physics Letters B, 2011, 694(4-5): 393-397.

DOI：10.1016/j.physletb.2010.10.030

• Forward-backward asymmetry
• Top quark

The updated CDF measurement of the forward-backward asymmetry A(FB) in the top quark production p (p) over bar -> t (t) over bar at Tevatron (with root s = 1.96 TeV) shows a deviation of 2 sigma from the value predicted by the Standard QCD Model. We present calculation of this quantity in the scenario, where colored unparticle physics contributes to the s-channel of the process, and obtain the regions in the plane of the unparticle parameters lambda and d(u), which give the values of the A(FB) and of the total t (t) over bar production cross section compatible with the present measurements.

• 出版日期2011-1-3