# Elastic pp and $\bar p$p scattering in the modified additive quark model

Abstract : The modified additive quark model proposed recently by authors allowed 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 very high qualitative reproduction of data up to maximal measured momenta transferred at 19.4 GeV $\leq \sqrt{s}\leq$ 630 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.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00009731
Contributor : Sylvie Flores Connect in order to contact the contributor
Submitted on : Friday, January 26, 2001 - 1:58:05 PM
Last modification on : Friday, September 10, 2021 - 1:50:05 PM
Long-term archiving on: : Tuesday, June 22, 2010 - 3:37:34 PM

### Identifiers

• HAL Id : in2p3-00009731, version 1

### Citation

P. Desgrolard, M. Giffon, E. Martynov. Elastic pp and $\bar p$p scattering in the modified additive quark model. European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2000, 18, pp.359-367. ⟨in2p3-00009731⟩

Record views