Forward-backward asymmetry of top quark in unparticle physics

Chuan Hung Chen, G. Cvetič, C. S. Kim

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55 Citations (Scopus)


The updated CDF measurement of the forward-backward asymmetry AFB in the top quark production pp-→tt- at Tevatron (with s=1.96 TeV) shows a deviation of 2 σ 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 λ and dU, which give the values of the AFB and of the total tt- production cross section compatible with the present measurements.

Original languageEnglish
Pages (from-to)393-397
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number4-5
Publication statusPublished - 2011 Jan 3

Bibliographical note

Funding Information:
C.H.C. was supported in part by the National Science Council of R.O.C. under Grant No. NSC-97-2112-M-006-001-MY3 . G.C. was supported in part by FONDECYT (Chile) Grant No. 1095196 and Rings Project (Chile) ACT119 . The work of C.S.K. was supported in part by the Basic Science Research Program through the NRF of Korea funded by MOEST ( 2009-0088395 ), in part by KOSEF through the Joint Research Program ( F01-2009-000-10031-0 ).

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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