Axial Vector Amplitudes, Second Order Fermions, and Standard Model Photon -- Neutrino Processes

Details Axial Vector Amplitudes, Second Order Fermions, and Standard Model Photon -- Neutrino Processes Axial Vector Amplitudes, Second Order Fermions, and Standard Model Photon -- Neutrino Processes

1999-05-27

arxiv.org/abs/hep-ph/9905525v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 5 figures, standard latex, talk given at Corfu Summer Institute on Elementary Particle Physics, 1998

Scientific paper

We present an extension of the string-inspired technique suitable to the calculation of amplitudes and effective Lagrangians involving both vector and axial vector gauge fields. The technique is easily adaptable to problems involving constant external fields. We demonstrate the advantages of the formalism by a calculation of the one-loop vector-axialvector amplitude in a general constant electromagnetic field. The relevance of this calculation for photon-neutrino processes is commented upon. We also clarify the properties of the formalism with respect to the chiral symmetry, and its connection to second order fermions.

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