在核子重整化鏈圖傳播下核子與中性介子彈性碰撞散射截面的理論計算與研究.pdf

1、重慶大學碩士學位論文在核子重整化鏈圖傳播下核子與中性介子彈性碰撞散射截面的理論計算與研究姓名：高飛申請學位級別：碩士專業(yè)：理論物理指導教師：張忠燦20060501重慶大學碩士學位論文 英文摘要ⅡABSTRACTThe scattering of elastic collision in exchanging four- dimensional momentum and energybetween nuclear (proton, neu

2、tron) and neutral pion was solved by using potential model andadopting quantum mechanics in nucleus physics. Because the energy region in nucleus ishundreds of MeV, the research is restricted and the results are not idea

3、l for the wide energyregion (including low, middle and high energy). In this paper, the scattering of elastic collisionbetween nucleus and neutral meson was investigated in wide interacting energy region by usingquantum

4、field theory.The strictly analytic calculation to differential cross section was finished in the propagator ofthe nucleon tree diagram, loop diagram and chain diagram, and the effective formula of protonand neutral meson

5、 elastic collision differential cross section was obtained under the nucleusrenormalization propagator and Center of Mass frame. Then the differential cross sectionformula was obtained though the miscellaneous and interm

6、inable calculation, and thedifferential cross section of the tree diagram was calculated.To obtain the differential cross section of the nucleon one loop propagator and the chainpropagator, it’ s necessary to accurately

7、calculate nucleon one loop diagram and chain diagramrenormalization propagator; it’ s very complex and difficult. In this paper, renormalization finitequantity is separated from the infinite by using matrix function expa

8、nsion, the 1- dimensionintegral formula of the nucleon one loop renormalization finite quantity is obtained by adoptinggreat momentum limitation integral, at last, the accurate results of the nucleon one looprenormalizat

9、ion finite quantity is obtained with the complex function integral. According to theresults, the nucleon renormalization chain propagator is obtained, and the convergence of thematrix function infinite series is discusse

10、d, at last, the accurate results of the differential crosssection of the nucleon loop and chain propagator are obtained. The radiation correction isdiscussed in detail and the future work is prospected.Keywords： Renormal