在核子-反核子重整化鏈圖傳播下質(zhì)子-反質(zhì)子湮滅產(chǎn)生雙中性介子的反應(yīng)截面的理論計(jì)算研究.pdf

1、重慶大學(xué)碩士學(xué)位論文在核子反核子重整化鏈圖傳播下質(zhì)子反質(zhì)子湮滅產(chǎn)生雙中性介子的反應(yīng)截面的理論計(jì)算研究姓名：王春明申請學(xué)位級別：碩士專業(yè)：理論物理指導(dǎo)教師：張忠燦20060401重慶大學(xué)碩士學(xué)位論文英文摘要IIABSTRACTNucleonnucleoninteractionisthefoundationofnuclearstructurethebasichadronhadroninteraction.Soithasimptantmean

2、ingtoresearchnucleonnucleoninteraction.Atpresentthoughtherearemanytheiesaboutnuclearpowernucleonnucleoninteractionmedifficultiesexistinbothofthesetheiesmodelsmeless.Onlyquarkmodelismesuccessfulfstronginteractionespeciall

3、ytheexperimentfactofthequantumchromodynamicswhichisthebasictheiesofquarkinteractionthestronginteractionbecomeonebasicprobleminphysicsagain.InthenucleonsinteractionfrombringingfwardthepionexchangemodelofYukawathoughwhichh

4、adsolvedmanyproblemsaboutstronginteraction(nuclearpower)couldnotbecomethebasictheybecauseofthelimitofitselfithasmeapplicabilityyet.Inthequantumfieldtheythecommonmethodfresearchingparticlesinteractionistheperturbationthey

5、ofwhichthemostproblemistheFeynmanintegraldivergencesdifficultyfconsideringhighstepcrectionwhichbecomethemajfactfrestrictingitsdevelopment.Basedonquantumfieldtheyperturbationmethodthistextadoptstheneutralpionnucleoncoupli

6、ngmodelofLentz’sinvariabilitytoresearchthecrosssectioncalculationofthereactionprocessfnucleonantinucleonbeingannihilatedtodoublepionssolvethedivergentdifficultyundertheframeofthepropagatchainloopapproximationachievethecr

7、osssectioncalculationfonelooptwoloopevenchainloop(infinitudeloop)crection.Thedivergentdifficultyofthepropagatfunctionintegralarisenfromchainloopcrectioncanberemovedviarenmalizationprojectsocalledwhichattempttoseparatethe

8、finitepartfromthedivergentpropagatfunctionintegralkeepthefinitepartinmeaningofphysics，gainthepropagatfinitevalueviaaseriesofanalyticalmethod(FeynmanintegraltransfmationWickrotationlargemomentumlimitintegralcomplexfunctio

9、nintegraletc.)accomplishthepropagatradializationcrectionunderoneloopchainloopapproximationaccdinglyfinishthedifferentialcrosssectionatlast.Theresultsindicate，thatpropagatchainloopcrectioniscontributivefthecrosssectioncal