Ideas of four-fermion operators in electromagnetic form factor calculations
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American Physical Society (APS)
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Four-fermion operators have been used in the past to link the quark-exchange processes in the interaction of hadrons with the effective meson-exchange amplitudes. In this paper, we apply the similar idea of a Fierz rearrangement to the self-energy and electromagnetic processes and focus on the electromagnetic form factors of the nucleon and the electron. We explain the motivation of using four-fermion operators and discuss the advantage of this method in computing electromagnetic processes. © 2013 American Physical Society.
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Physical Review D - Particles, Fields, Gravitation and Cosmology, v. 87, n. 9, 2013.
