Renormalized Loop Chain Diagram Effects Of Bhabha Scattering Cross Section In W-S Model

We systematically analyse the several specific physical processes of Bhabhascattering loops chain. These several physical processes are Bhabha scattering loopschain process of QED interaction theory, Bhabha scattering loops chain process of weakinteraction theory, and Bhabha scattering hybrid loops chain process of the electroweakstandard model (W-S). And then we further study the problem analysis andrenormalization treatment on Bhabha scattering process. Finally we get therenormalization effects of loop chain diagrams about the Bhabha scattering crosssection.In the specific analysis and calculation, we use the renormalization chainpropagator theory which is one of the quantum field theory of perturbation theory, andmake a concrete analysis and calculation of Bhabha scattering. First of all, we give loopchain propagator in the electromagnetic interaction, and loop chain propagator in theweak interaction, make the renormalization of them and get their representation ofrenormalization. Secondly, we give the electroweak hybrid loop chain diagrampropagator in the W-S theory, by reforming treatment, getting the physicalrepresentation. Finally, we apply them to calculate the cross section of Bhabhascattering process, and get the physical effects by transferring interaction inrenormalization chain diagram propagators.Through the preceding analysis and calculation, we easily obtain the differentialcross sections of three kinds of Bhabha scattering process, and make comparison andanalysis of the differential scattering cross section of the results between our theoryresults and experimental data. We give hybrid loop chain scattering differential crosssection which is with the change of the cos in Bhabha scattering, is in different thecenter-of-mass energy and so do the experiments of Bhabha scattering. The comparisonbetween theoretical and experimental values is depicted in figures. The results showedthat the figures overall trend is entirely consistent with experimental results, andtheoretical evaluations are larger than experimental data in most of the data points, andthen we make thorough analysis and reasonable explanation. At different scatteringangles we further present and discuss the differential scattering cross section with achange in an energy range up to70GeV per beam, and the results argues that weakinteraction contribution of Bhabha scattering loop chain process is negligible in this energy range. Our thesis not only from a research perspective can verify the electroweakstandard model theory in describing the particle reaction, but also can give importantacademic reference value for getting the finally complete theoretical system of theresearch in description of the Bhabha scattering process.