I= THE CHOU-YANG MODEL FOR HADRON-NUCLEUS AND NUCLEUS-NUCLEUS ELASTIC REACTIONS AT HIGH ENERGIES
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Title of Thesis
THE CHOU-YANG MODEL FOR HADRON-NUCLEUS AND NUCLEUS-NUCLEUS ELASTIC REACTIONS AT HIGH ENERGIES

Author(s)
Shaukat Ali
Institute/University/Department Details
Centre for High Energy Physics/ University of the Punjab
Session
1992
Subject
Physics
Number of Pages
172
Keywords (Extracted from title, table of contents and abstract of thesis)
chou-yang model, hadron-nucleus, nucleus-nucleus elastic reactions, proton, a-particle, deuteron, alpha-alpha scattering, proton-alpha scattering, deuteron-deuteron scattering, proton-deuteron scattering, form factors

Abstract
This thesis; deals with the various characteristics of nucleus-nucleus and hadron-nucleus elastic scattering at high energies. After surveying the literature on experimental measurements of these reactions, the form factors of proton, a-particle and deuteron which are used as input in the Chou-Yang model have been discussed in detail. It is shown that nucleus-nucleus and hadron-nucleus elastic scattering can be explained by using electromagnetic form factors as input in the pristine Chou-Yang model only up to the diffraction peak region and breaks down in the vicinity of the dip and beyond. The generalized Chou-Yang model which is based upon multiple diffraction theory is used to explain the existing experimental data for these reactions at high energies. It is observed that the data for αα and p α elastic scattering is explained by using generalized Chou-Yang model. However, the model is unable to reproduce the entire structure in dd elastic scattering at high energies. The basic conjecture of Chou and Yang that the hadronic form factor is proportional to the electromagnetic form factor, is then critically examined. We have proposed energy dependent hadronic from factors of deuteron and alpha, different from their electromagnetic form factors. It is shown that dd, pd, α α and pa elastic scattering can be explained over the entire measured region by using energy dependent hadronic form factors of deuteron, proton and alpha in the pristine Chou-Yang model. The agree lent between the predicted values and the experimental data for the elastic scattering at all momentum transfers suggests that the basic conjecture of Chou and Yang that the hadronic form factor is proportional to the electromagnetic form factor is only an approximation of the true picture.

Download Full Thesis
19456.55 KB
S. No. Chapter Title of the Chapters Page Size (KB)
1 0 Contents
686.67 KB
2 1 Introduction 1
698.24 KB
3 2 Survey Of Literature On Experimental Measurements 6
1322.81 KB
  2.1 Elastic Differential Cross Section And Other Characteristics Of Alpha-Alpha Scattering 6
  2.2 Elastic Differential Cross Section And Other Characteristics Of Proton-Alpha Scattering 8
  2.3 Elastic Differential Cross Section And Other Characteristics Of Deuteron-Deuteron Scattering 9
  2.4 Elastic Differential Cross Section And Other Characteristics Of Proton-Deuteron Scattering 10
4 3 Form Factors 14
2170.38 KB
  3.1 Alpha Form Factor 14
  3.2 Deuteron Form Factor 16
  3.3 Proton Form Factor 17
5 4 Predictions Of The Geometrical Model 27
3075.02 KB
  4.1 Pristine Chou-Yang Model 28
  4.2 Generalized Chou-Yang Model 30
  4.3 Review Of Theoretical Explanations 31
  4.4 Our Predictions 33
6 5 Conclusions 45
11482.75 KB
  5.1 References 45
  5.2 Tables Captions 48
  5.3 Figure Captions 53
  5.4 Tables 54
  5.5 Diagrams