Ideas of four-fermion operators in electromagnetic form factor calculations
1 Department of Physics, North Carolina State University, Raleigh, NC 27695-8202, USA
2 Department of Physics and Astrophysics, Vrije Universiteit, De Boelelaan 1081, NL-1081 HV Amsterdam, The Netherlands
3 Department of Physics, Teachers College, Kyungpook National University, Daegu 702-701, Korea
4 Instituto de Física Teórica-UNESP Universidade Estadual Paulista, Rua Dr. Bento Teobaldo Ferraz, 271 - Bloco II, 01140-070 São Paulo, SP, Brazil
Published online: 9 June 2014
Four-fermion operators have been utilized in the past to link the quark-exchange processes in the interaction of hadrons with the effective meson-exchange amplitudes. In this presentation, we apply the similar idea of Fierz rearrangement to the electromagnetic processes and focus on the electromagnetic form factors of nucleon and electron. We explain the motivation of using four-fermion operators and discuss the advantage of this method in computing electromagnetic processes.
© Owned by the authors, published by EDP Sciences, 2014
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