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1、學校代碼10459學號或申請?zhí)?01512131556密級碩士學位論文31利用P0模型研究5S0介子九重態(tài)的性質作者姓名:薛世晨導師姓名:李德民教授學科門類:理學專業(yè)名稱:粒子物理與原子核物理培養(yǎng)院系:物理工程學院完成時間:2018年5月AthesissubmittedtoZhengzhouUniversityforthedegreeofMasterStudyofthePropertiesofthe51S0MesonNonetWithinthe3P0ModelByShi-chenXueSupervisor:Prof.De-minLiParticlePhysicsa
2、ndNuclearPhysicsSchoolofPhysicsandEngineeringMay2018摘要摘要量子色動力學是描述強相互作用的基本理論,它預言除了通常的介子態(tài)外,還存在膠子球,混雜態(tài),多夸克態(tài)等奇特強子態(tài)。確定這些奇特強子態(tài),需要把這些奇特態(tài)從通常的介子態(tài)中區(qū)分出來,這要求人們很好地理解通常的介子譜。3P31我們詳細介紹了相對論夸克模型和0模型?;赑0模型,我們對5S0贗標介子九重態(tài)做了系統(tǒng)地研究。我們的計算結果表明??2360?,??2320?和??1X2500的質量和衰變寬度等實驗信息支持它們作為5S介子九重態(tài)成員。另01外,我們還預言了5S
3、K介子的質量和寬度,這有助于在實驗中尋找該介子。03P關鍵詞:介子,強衰變,0模型IAbstractAbstractQuantumChromodynamicsisabasictheorydescribingthestronginteractions.Apartfromtheordinarymesonsandbaryons,theexoticstatessuchasglueballs,hybrids,multiquarkstatesalsoexistintheframeworkofQuantumChromodynmaics.Toidentifytheseexotic
4、states,oneneedstodistinguishthemfromthebackgroundofordinarymesonstates,whichrequiresonetounderstandwelltheconventionalmesonspectroscopy.3TherelativisticquarkmodelandthePmodelarereviewedindetail.Wehave013systematicallystudiedthepropertiesof5SmesonnonetbasedonP0model.Our0resultsshowthat
5、themassesandstrongdecaysofthe??2360?,??2320?andX?2500?1supportthemasthemembersofthe5Smesonstates.Inaddition,wepredictthemass01andwidthofthe5Skaon,whichcouldbeusefulforsearchingforthecandidatefor0the51S0kaonexperimentally.KeyWords:meson,strongdecays,3P0modelII目錄目錄摘要....................
6、..........................................................................................IAbstract......................................................................................................II目錄................................................................................
7、...........................III圖清單........................................................................................................V表清單.......................................................................................................VI1引言....................................
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