The Polarized and Unpolarized Photon Content of the Nucleon

Details The Polarized and Unpolarized Photon Content of the Nucleon The Polarized and Unpolarized Photon Content of the Nucleon

2002-06-14

arxiv.org/abs/hep-ph/0206126v1

Phys.Lett.B540:75-80,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 16 pages, 6 figures

Scientific paper

10.1016/S0370-2693(02)02125-1

The equivalent photon content of polarized and unpolarized nucleons (protons, neutrons), utilized in Weizs\"acker--Williams approximations, are presented. For this purpose a new expression for the elastic photon component of a polarized nucleon is derived. The inelastic photon components are obtained from the corresponding momentum evolution equations subject to the boundary conditions of their vanishing at some low momentum scale. The resulting photon asymmetries, important for estimating cross section asymmetries in photon induced subprocesses are also presented for some typical relevant momentum scales.

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