Factorization Theorems for High Energy nn, gamma p and gamma gamma Scattering

Details Factorization Theorems for High Energy nn, gamma p and gamma gamma Scattering Factorization Theorems for High Energy nn, gamma p and gamma gamma Scattering

2003-02-17

arxiv.org/abs/hep-ph/0302148v1

Eur.Phys.J. C30 (2003) 497-501

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex2e, 8 pages, 1 postscript figure placed with epsfig.sty

Scientific paper

10.1140/epjc/s2003-01318-x

The robustness of the factorization theorem for total cross sections, $\sigma_{nn}/\sigma_{\gamma p}=\sigma_{\gamma p}/\sigma_{\gamma\gamma}$, originally proved by Block and Kaidalov\cite{bk} for $nn$ (the even portion of $pp$ and $\pbar p$ scattering), $\gamma p$ and $\gamma\gamma$ scattering, is demonstrated. Factorization theorems for the nuclear slope parameter $B$ and $\rho$, the ratio of the real to the imaginary portion of the forward scattering amplitude, are derived under very general conditions, using analyticity and the optical theorem.

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