Calculation of a High Order QCD Process-gg to ttgg |
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| Authors: | ZHANG Dahua WU Dandi David Wagoner Dennis Judd |
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| Affiliation: | 1. Institute of High Energy Physics, The Chinese Academy of Sciences, Beijing 100039, China;2. prairie View A&M University, Prairie View, TX 77429-0355, USA |
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| Abstract: | We use the permutation group of order 4 to classify the fouith order tree QCD Feynman diagrams, which contribute to the gg to tfgg process. (There are 159 of them.) We also provide new methods to make the color sum, and to check the gauge symmetry of the matrix elements and Feynman parts. |
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| Keywords: | QCD permutation group top quark gluon Higgs |
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