Multigluon tree amplitudes with a pair of massive fermions
Jia-Hui Huang, Weijian Wang
TL;DR
This paper develops transformation rules for multigluon tree amplitudes involving massive fermion pairs in QCD, and computes explicit analytic results using BCFW recursion, verified by SUSY Ward identities.
Contribution
It introduces explicit transformation rules for massive fermion-pair amplitudes and applies BCFW recursion to derive analytic n-point multigluon amplitudes.
Findings
Transformation rules verified by SUSY Ward identities
Explicit analytic formulas for multigluon amplitudes with massive fermions
Application of BCFW recursion to complex QCD amplitudes
Abstract
We consider the calculation of n-point multigluon tree amplitudes with a pair of massive fermions in QCD. We give the explicit transformation rules of this kind of massive fermion-pair amplitudes with respect to different reference momenta and check the correctness of them by SUSY Ward identities. Using these rules and onshell BCFW recursion relation, we calculate the analytic results of several n-point multigluon amplitudes.
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