Forward Compton Scattering, using Real Analytic Amplitudes

Details Forward Compton Scattering, using Real Analytic Amplitudes Forward Compton Scattering, using Real Analytic Amplitudes

2002-04-04

arxiv.org/abs/hep-ph/0204048v4

Phys.Rev. D65 (2002) 116005

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex2e, 6 pages, 2 postscript figures placed with epsfig.sty. Fixed problem with Fig.1 placement. Version to be published in

Scientific paper

10.1103/PhysRevD.65.116005

We analyze forward Compton scattering, using real analytic amplitudes. By fitting the total \gamma p scattering cross section data in the high energy region 5 GeV < \sqrt s < 20 GeV, using a cross section rising as \ln^2 s, we calculate \rho_{\gamma p}, the ratio of the real to the imaginary portion of the the forward Compton scattering amplitude, and compare this to \rho_{nn}, the ratio of the even portions of the pp and p-bar p forward scattering amplitudes. We find that the two \rho-values are, within errors, the same in the c.m.s. energy region 5 GeV < \sqrt s < 200 GeV, as predicted by a factorization theorem of Block and Kadailov.

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