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Feb 15 – 18, 2022
America/Vancouver timezone
WNPPC2022 Booklet has been added. See also information about today's special guest: Dr. Eden Hennessey

Leptonic Tensor Approach to Calculate Scattering Cross Sections for Distinguishable Target Particles

Feb 17, 2022, 10:24 AM


Electroweak and Higgs Physics Scattering and Electrons


Mahumm Ghaffar (Memorial University of Newfoundland)


We perform Next-to-the Leading Order (NLO) and quadratic level (NNLO) covariant approach to get the leptonic tensor for a general QED scattering process with a distinguishable target particle. The Feynman diagram of the scattering process in question is divided into upper (leptonic) and lower (either leptonic or hadronic) parts. The QED quadratic leptonic tensor is of the order of $\alpha^3$ which is usually obtained by multiplying two loop level photon self energy with tree level diagram. However, in this work it is obtained by squaring one loop level photon self energy and vertex correction diagrams. Hence this approach is more suitable if one wants to calculate NNLO corrections without using two loop level diagrams.

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Primary author

Mahumm Ghaffar (Memorial University of Newfoundland)

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