EFFECT OF TIME-ORDERING ON HADRON-NUCLEUS SCATTERING

Abstract

This thesis is concerned with the study of the effect of the time-ordering in multi-scattering processes in particle-nucleus elastic scattering at intermediate and high energy in the framework of multiple scattering theory of Glauber. The nuclei , , , and are taken as a targets. The time-ordering plays important role to obtain a good fit with the experimental data of particle-nucleus elastic scattering differential cross section at the minima. This effect is represented by a phase factor in particle-nucleon elastic scattering amplitude of second, third, and fourth collision and so on. Including the time-ordering in the calculations of the results of the particle-nucleus elastic scattering differential cross section, the agreement with the experimental data is improved at different minima for the mass number of the target nucleus A>2. The obtained results are, also, compared with the results of phase-variation of particle-nucleon elastic scattering amplitude suggested by Franco and Yin. The thesis consists of five chapters, list of references, list of figures, list of tables and English and Arabic summaries. In chapter I, a general view of the subject in published literatures is presented for a wide range of years, 1959-2018, Sec. 1.1 particle-nucleon amplitude phase-variation is presented in Sec. 1.2. A brief formulation of multiple scattering theory of Glauber is given in Sec. 1.3. Finally, in Sec. 1.4 the time-ordering effect is introduced and explained. Chapter II is concerned with the time-ordering effect on the elastic scattering differential cross section of proton-deuteron ( )