26435.組分夸克模型下研究含單粲夸克的重子譜

1、組分夸克模型下研究含單粲夸克的重子譜專業(yè)名稱：理論物理申請人：董志達(dá)指導(dǎo)教師：陸曉教授論文答辯委員會士I壹拳緣rtL主席：迎奪、委員：埠絳壘廣西師范大學(xué)碩士研究生論文TheResearchonsinglecharmquarkbaryonspectraintheconstituentquarkmodelGraduate：ZhiDaDongMajor：TheoreticalPhysicsGrade：2011Abstract：Adviser：

2、ProfXiaoLuDirection：ParticleandNuclearPhysicsQuantumchromodynamics(QCD)isthefundamentaltheoryofthestronginteractionQCDtheorycontainsthethreebasicpropertiesnamelythechiralsymmetrycolorconfine’mentandasymptoticfreedomIt’Sw

3、orthpointingoutthattheasymptoticfreedomchar—acteristicsCallbeaccuratelysolvedwithperturbationtheoryduringtheprocessofdealingwiththestronginteractioninthehighenergyregionButinthelowenergyregion，itneedstoadoptthenomperturb

4、ativetheoryItisdifIlculttodirectlysolvethenon—perturbativeeffectwiththetheoryofQCDTherefore，instudyingthelowenergyhadronicproperties，oneneedtousethephenomen0109icalmodelinQCDspiritAmongthem，theSU(3)chi—ralquarkmodelpropo

5、sedbyZhangZongyecanbetterexplaintheproblemsinthefieldoflightquarksuchasthebaryongroundstateenergy，deuteronbindingenergy，thescatteringbetweenhadronsandhadronsetcWithmoreandmoretheheavybaryonsarefound)it’Soneofthehottopics

6、tostudytheheavybaryonspectrainthefieldofhighenergyphysicsInpresentwork：westudythegroundstateenergyandthelowlevelexcitedstateenergyoftheheavybaryoncontainingasingleheavyquarkintheconstituentquarkmodelInpresentwork，weuseth

7、enewmethodofgrouptheory—theeigenfunctionmethod，tocalculatethestandardbasisandtheCGcoe伍cientsinpermutationgroupwhichareneededtoconstructtheheavybaryons’wavefunctionofthethreequarkstatesThenwecalculatethegroundstateenergya

8、ndtheexcitedstateenergyofN≤2inSU(3)chiralquarkmodelIntheconstituentquarkmodel，wehavealsocalculatedthegroundstateenergycontainingasingleheavyquarkbaryonandtheexcitedstateenergyofN≤2Andthenbased0nthegroundstateenergyofthee

9、xperimentallyeknowncontaininglightbaryon，onecanfittheparametersassociatedwiththelightbaryonsandthenobtainthethegroundstateenergyandtheexcitedstateenergyofthelightbaryonTheresultshowsthatthetheoreticalvaluesareingoodagree

10、mentwiththeexperimentalvaluesInthiscondition，thenaccordingtothegroundstateenergyoftheexperimentallyknowncontainingheavybaryonA“蘭c、蘭：、Ec、Qc，oneCanfittheparametersassociatedwiththeheavybaryons，thusobtainthethegroundstateen