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ID:17601831
大小:1.25 MB
页数:60页
时间:2018-09-03
《利用3P0模型研究51S0介子九重态的性质》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、学校代码10459学号或申请号201512131556密级硕士学位论文31利用P0模型研究5S0介子九重态的性质作者姓名:薛世晨导师姓名:李德民教授学科门类:理学专业名称:粒子物理与原子核物理培养院系:物理工程学院完成时间:2018年5月AthesissubmittedtoZhengzhouUniversityforthedegreeofMasterStudyofthePropertiesofthe51S0MesonNonetWithinthe3P0ModelByShi-chenXueSupervisor:Prof.De-minLiParticlePhysicsa
2、ndNuclearPhysicsSchoolofPhysicsandEngineeringMay2018摘要摘要量子色动力学是描述强相互作用的基本理论,它预言除了通常的介子态外,还存在胶子球,混杂态,多夸克态等奇特强子态。确定这些奇特强子态,需要把这些奇特态从通常的介子态中区分出来,这要求人们很好地理解通常的介子谱。3P31我们详细介绍了相对论夸克模型和0模型。基于P0模型,我们对5S0赝标介子九重态做了系统地研究。我们的计算结果表明2360,2320和1X2500的质量和衰变宽度等实验信息支持它们作为5S介子九重态成员。另01外,我们还预言了5S
3、K介子的质量和宽度,这有助于在实验中寻找该介子。03P关键词:介子,强衰变,0模型IAbstractAbstractQuantumChromodynamicsisabasictheorydescribingthestronginteractions.Apartfromtheordinarymesonsandbaryons,theexoticstatessuchasglueballs,hybrids,multiquarkstatesalsoexistintheframeworkofQuantumChromodynmaics.Toidentifytheseexotic
4、states,oneneedstodistinguishthemfromthebackgroundofordinarymesonstates,whichrequiresonetounderstandwelltheconventionalmesonspectroscopy.3TherelativisticquarkmodelandthePmodelarereviewedindetail.Wehave013systematicallystudiedthepropertiesof5SmesonnonetbasedonP0model.Our0resultsshowthat
5、themassesandstrongdecaysofthe2360,2320andX25001supportthemasthemembersofthe5Smesonstates.Inaddition,wepredictthemass01andwidthofthe5Skaon,whichcouldbeusefulforsearchingforthecandidatefor0the51S0kaonexperimentally.KeyWords:meson,strongdecays,3P0modelII目录目录摘要....................
6、..........................................................................................IAbstract......................................................................................................II目录................................................................................
7、...........................III图清单........................................................................................................V表清单.......................................................................................................VI1引言....................................
8、.....
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