Speaker
Description
Under the influence of standardly used description of Coulomb-hadronic interference proposed by West and Yennie the protons have been interpreted as transparent objects; elastic events have been interpreted as more central than inelastic ones. It is known that using more general eikonal model measured elastic data may be interpreted also very differently; elastic processes being more peripheral than inelastic ones. The most ample elastic data set measured at ISR energy of 52.8 GeV have been recently reanalyzed with the help of the eikonal model and new results obtained. New alternatives of peripheral behavior will be presented and compared to a central one. The impact of recently established electromagnetic form factors on determination of quantities specifying hadron interaction determined from the fits of experimental elastic data will be discussed. The influence of some assumptions on proton characteristics derived from elastic hadronic scattering amplitude determined on the basis of experimental data will be mentioned, too. It concerns mainly the assumed t-dependence of phase of elastic hadronic amplitude. The results will be then compared to similar analysis of experimental data at much higher LHC energy of 8 TeV recently published by TOTEM experiment.
The talk will cover some of the main results obtained and published very recently in:
[1] J. Prochazka, V. Kundrat, Eikonal model analysis of elastic hadron collisions at high energies,
arXiv:1606.09479 (2016); https://arxiv.org/abs/1606.09479
[2] J. Prochazka, M. Lokajicek and V. Kundrat, Dependence of elastic hadron collisions on impact parameter, Eur. Phys. J. Plus (2016) 131: 147; http://link.springer.com/article/10.1140/epjp/i2016-16147-x
[3] TOTEM Collaboration (…,V. Kundrat, M. V. Lokajicek, J. Prochazka,…), Measurement of elastic pp scattering at sqrt(s) = 8 TeV in the Coulomb-nuclear interference region: determination of the rho parameter and the total cross section, Eur. Phys. J. C76 (2016) 661.
