26437.含重味粲夸克的五夸克重子譜研究

1、含重味粲夸克的五夸克重子譜研究專業(yè)名稱：申請人：辛旨導(dǎo)教師：理論物理劉永紅陸曉論文答辯委員會主席：封乓委員：j牡A(chǔ)bstractSincethequantumchromodynamicsisproposedinlastcenturyseventy’S，throughmountsofresearchbyscientists，thetheoryofQCDisrecognizedasthebasictheoryofthestronginter

2、actionWecansolveitaccuratelyinthelowenergyregionbyperturbationmethodButforthehighenergyregion，usingthetheoryofQCDdirectlytodealwiththes仃onginteractionisverydifficultduetothenonperturbativeproperties，thushavingtodependons

3、omephenomenologicaltheoriesEspecially，thequarkmodelisthemostsuccessfulBaryoniscomposedofthreequarksandmesotroniscomposedofpositiveandnegativequarkintraditionalquarkmodelWheninthehighenergyregion，thetheoryofthequarkmodelc

4、anexplainwellButinthelowenergyhighexcitedstates。derivationbe—tweenthetheoreticalvalueandtheexperimentalvalueisalittlelargeThuspeoplethinkthebaryon，additionallycomposedbythethreequarkssystem，maybealsomixthemulti—quarkstat

5、eDORiska，ZongyeZhangFanWangEtcusedifferentmodelstomakelotsofresearchonthemulti—quarkspectrumintetraquarks，pentaquarksandSOonIntherecentyears，thestudyonheavybaryonhasbecomeanewhotspotintheresearchontheoreticalphysicsTetra

6、quarkshavemorethanonestructureofthequarksThepresentworkisbasedonthequarkmodel，usingthenewmethodofthegrouprepresentationthe—orytoconstructthewavefunctionofpentaquarkcontainingthecharmquarkThepresentworkstudythebaryonconta

7、iningfivequarksqqqq石1Astheantiquarkandfourquark—ShavenosymmetrywefirstlyseparateantiquarkoutwheninconstructingthebaryonwavefunctionWealsocalculatetheCGcoefficientoftheSU(4)whenf=7Weusethetheoryofgrouprepresentationtocons

8、tructthetetraquarks’wavefunctionforallthespaces，andthencouplethem，ultimatelyincludingtheantiquarks’，thusobtainingtheantisymmetricwavefunctionswhichareconstrainedbythepauliexclusionprincipleBycalculatingallkindsofoperator