中性標量介子結(jié)構(gòu)與φ介子電磁輻射衰變研究.pdf

1、西南大學碩士學位論文中性標量介子結(jié)構(gòu)與φ介子電磁輻射衰變研究姓名：杜昌喬申請學位級別：碩士專業(yè)：理論物理指導教師：周明震20100501西南大學碩士學位論文Abstract曼曼曼曼曼曼曼曼!曼曼曼皇曼曼曼曼曼曼曼曼曼皇曼曼曼曼曼皇!曼曼曼曼曼曼蔓曼曼皇曼曼罡曼!曼曼!曼曼寰n1曼曼曼鼉曼曼Major：TheoreticalPhysicsDirection：ParticlePhysicsAuthor：ChangQiaoDuSupervis

2、or：Ming—ZhenZhou(AdjunctProfessor)AbstractrQCDsumruleisoneofthemostimportantnonpertubativemethodsandhasbecomeapowerfultoolinhadronsphenomenologyThisarticleintroducedthefoundationandbasicstepofthetheory，inparticallybasict

3、hought，characteristicsanddifferentiationofSVZSUlTIruleandlightconeQCDsumruleAccordingtothecurrenttheexperimentalvaluefromtheelectromagneticradiationof咖mesonfora0(980)D，f0(980)meson，thelargevalueofcouplingconstants‰，impli

4、edthata0(980)couldhavea露compositionSowemakeafollowingassumption：a0=cosflln萬sinflI西，I仃=COSt2g蠆一sinaI西，andfo=sinag蠆一COSJ西，whereI聆萬=(J材歷一ldd)／√2，Ig蠆=(IⅣ歷l癡)／√2Theparameters僅，DarethemixinganglesAndthenweinvestigateradiationd

5、ecays#)Sybyutilizing睜巾mixingscheme，takingintoaccountofallcontributionsofthetwist4photonthreeparticledistributionamplititudesandtheSU(3)flavorsymmetricbreakingeffectAtthesametime，weusethesecouplingconstantstoderivedecaywi

6、dthof#—Syprocesses，andcompareourresultwithexperimentaldatainourmodelFinally，Ourresultarclistedasfollowing：(1)≯jaoYdecay：g慨，=1642O051with∥=593。37。andr(≯專aor)=361125；xlO。GeVisconsistedwiththeexperimentalresultfromPDG；(2)忙鉚

7、and哪decays：When口=47。O3‘，‰，=169032andg細=0060O012areagreementwiththeexperimentalresultfromKLOE，respectivelyButF(#jfor)=4Oq吐l36；xlO～GeVislessthantheresultsfromPDGTherebenoexperimentaldatafor矽j07andOurpredictioniSr(≯一形)=480I