Elastic pp and $\bar pp$ scattering in the Modified Additive Quark Model

Details Elastic pp and $\bar pp$ scattering in the Modified Additive Quark Model Elastic pp and $\bar pp$ scattering in the Modified Additive Quark Model

2000-04-16

arxiv.org/abs/hep-ph/0004150v2

Eur.Phys.J.C18:359-367,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, LaTeX2e, 4 eps figures. Revised version accepted for publication in European Physical Journal C

Scientific paper

10.1007/s100520000537

The modified additive quark model, proposed recently, allows to improve agreement of the standard additive quark model with the data on the $pp, \bar pp, \pi^{\pm} p, \gamma p$ and $\gamma \gamma$ total cross-sections, as well as on the ratios of real to imaginary part of $pp$ and $\bar pp$ amplitudes at $t=0$. Here, we extend this model to non forward elastic scattering of protons and antiprotons. A high quality reproduction of angular distributions at 19.4 GeV $\leq \sqrt{s}\leq $ 1800 Gev is obtained. A zero at small $|t|$ in the real part of even amplitude in accordance with a recently proved high energy general theorem is found.

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