Ideas of four-fermion operators in electromagnetic form factor calculations

Chueng Ryong Ji; Bernard L.G. Bakker; Ho Meoyng Choi; Alfredo T. Suzuki

doi:10.1103/PhysRevD.87.093004

Ideas of four-fermion operators in electromagnetic form factor calculations

Chueng Ryong Ji, Bernard L.G. Bakker, Ho Meoyng Choi, Alfredo T. Suzuki

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2 Scopus citations

Abstract

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.

Original language	English
Article number	093004
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	87
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevD.87.093004
State	Published - 7 May 2013

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10.1103/PhysRevD.87.093004

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AB - 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.

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Ideas of four-fermion operators in electromagnetic form factor calculations

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