The proton form factor as well the electron proton differential cross section are calculated. The first Born approximation is used to calculate the transition matrix element for the quark system forming the proton target as scattered by the electron. Results are compared with the experiment SLAC-E-136 for elastic electron-proton scattering made in the range of momentum transfer from Q 2 = 2.9 t...

Abstract. The explicit procedures are described for reconstruction of the full set of helicity amplitudes in proton-proton and proton-antiproton elastic scattering. The procedures are based on the derivative relations for the helicity amplitudes in s-channel, on the explicit parametrization of the leading spin non flip amplitudes and crossing symmetry relations. Asymptotic theorems are used for...

Eta meson production in the proton-proton scattering is dominated by the low-mass meson exchange. We present a brief study on how the type of the exchanged mesons within coupled-channel and multi-resonance model influences the scattering observables. We show under which circumstances the eta exchange may explain the shape of the observed cross sections, and present a few selected results: total...

The KOALA experiment measures the differential cross section of (anti)proton–proton elastic scattering over a wide range four-momentum transfer squared |t| from 0.0008 to 0.1 (GeV/c)2. These data are essential input for PANDA reach desired absolute precision integrated luminosity determination. is based on fixed target kinematics and uses an internal hydrogen cluster jet target. achieved by mea...