Article

Journal of High Energy Physics

, 2011:43

One-loop helicity amplitudes for top quark pair production in Randall-Sundrum model

  • Hua Xing ZhuAffiliated withDepartment of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University
  • , Chong Sheng LiAffiliated withDepartment of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University Email author 
  • , Liang DaiAffiliated withDepartment of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University
  • , Jun GaoAffiliated withDepartment of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University
  • , Jian WangAffiliated withDepartment of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University
  • , C.-P. YuanAffiliated withDepartment of Physics and Astronomy, Michigan State University

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Abstract

In this paper, we show how to calculate analytically the one-loop helicity amplitudes for the process \( q\bar{q} \to t\bar{t} \) induced by KK gluon, using the spinor helicity formalism. A minimal set of Feynman rules which are uniquely fixed by gauge invariance and the color representation of the KK gluon are derived and used in the calculation. Our results can be applied to a variety of models containing a massive color octet vector boson.

Keywords

NLO Computations Field Theories in Higher Dimensions