|
Addis Ababa University Libraries Electronic Thesis and Dissertations: AAU-ETD! >
Faculty of Science >
Thesis - Physics >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/123456789/2787
|
| Title: | CROSS-SECTION FOR DOUBLE HEAVY QUARKONIUM PRODUCTION IN HIGH ENERGY ELECTRON-POSITRON COLLISIONS |
| Authors: | TEFERI, MEKONNEN |
| Advisors: | Dr.Shashank Bhatnagar |
| Copyright: | Jun-2010 |
| Date Added: | 8-May-2012 |
| Abstract: | Abstract
In this thesis we rst give a Lagrangian formulation of the gauge theories QED
and QCD. We derive the Feynman rules for QCD . AS an application of the rule, we
rst present the calculation of cross section for the process q+ q ! g+g as a mathematical
preliminary. We then derive the 2-particle Bethe-Salpeter equation. Then we evaluate the
cross section for the production of double heavy quarkonium production in high energy
electron-positron collisions at the center of mass energy ps 10.6 GeV. The cross section
for the process of e+e ! J= + c at the stated energy has been calculated by applying
the two-particle Bethe-Salpeter wave equation. We have used the heavy quark limit
and calculated the cross section for the lowest order diagram. The results are in broad
agreement with the Belle's data available recently.
viii |
| URI: | http://hdl.handle.net/123456789/2787 |
| Appears in: | Thesis - Physics
|
Items in the AAUL Digital Library are protected by copyright, with all rights reserved, unless otherwise indicated.
|
