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

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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.

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Authors and Affiliations

  1. Department of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, 100871, China

    Hua Xing Zhu, Chong Sheng Li, Liang Dai, Jun Gao & Jian Wang

  2. Department of Physics and Astronomy, Michigan State University, East Lansing, MI, 48824, U.S.A.

    C.-P. Yuan

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  1. Hua Xing Zhu
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  2. Chong Sheng Li
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  3. Liang Dai
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  6. C.-P. Yuan
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Correspondence to Chong Sheng Li.

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ArXiv ePrint: 1106.2243

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Zhu, H.X., Li, C.S., Dai, L. et al. One-loop helicity amplitudes for top quark pair production in Randall-Sundrum model. J. High Energ. Phys. 2011, 43 (2011). https://doi.org/10.1007/JHEP09(2011)043

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