Forward-backward asymmetry of top quark in unparticle physics

Details Forward-backward asymmetry of top quark in unparticle physics Forward-backward asymmetry of top quark in unparticle physics

2010-09-21

arxiv.org/abs/1009.4165v3

Phys.Lett.B694:393-397,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 5 figures; various typos corrected, fig.3 has higher resolution, Ref.[16](2nd entry) is new; version to appear in Ph

Scientific paper

10.1016/j.physletb.2010.10.030

The updated CDF measurement of the forward-backward asymmetry (FBA) in the top quark production p{bar p} -> t{bar t} at Tevatron (with the CMS energy 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 dU which give the values of the FBA and of the total t{bar t} production cross section compatible with the present measurements.

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