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

ThéorieThe 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