2019Ph-D-defense国外博士论文答辩PPT.ppt

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2019Ph-D-defense国外博士论文答辩PPT.ppt

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IdentifiedParticleProductioninp+pandd+AuCollisions

atRHICEnergiesFelixMatathiasDoctoralDefenseAdviser:TomHemmickStateUniversityofNewYorkatStonyBrookDecember8,2004,NewYork1

ComparativeNuclearPhysicsYesterdayitoccurredtomethatthecoreconceptofmythesisisnotsodifferentthanwhatmywifedoesforaliving.MywifeisaPh.D.studentinComparativeLiteratureatStonyBrook.Igaveheracalllastnightandaskedherforashortdefinitionofherfield.SherepeatedlyaskedmywhyIneededitandseemedconfused(andconcerned).ThegoalofComparativeLiteratureis:“…tocompareliteratureindifferentlanguagesandliteraturewithrelationtosomeotherfield…”Inthatvein,IdefinethegoalofComparativeNuclearPhysicstobe:“…comparepropertiesofparticleproductionindifferentnuclearenvironmentsandasafunctionofparticleflavor…”ObviouslythisisanarrowdefinitionthatImadeuptodefinethegoalofmythesis.Itcouldeasilythoughbeextendedtoamoregeneraldefinition.ThemainpointthoughisthatmywifemaybecomeinterestedinwhatIdo.2

ComparativeNuclearPhysicsIIInthisworkwewillbecomparingparticleproductionatCenterofMassEnergy:√s=200GeVDifferentnuclearenvironments:p+pcollisionsd+AucollisionsAu+AucollisionsParticlespecies:pions,Kaons,(anti)protonsThephysicalobservableswillbeDifferentialyieldperinelasticcollisioninthed+AuandAu+AucaseInvariantdifferentialcrosssectionsinthep+pcase3

ThemachineRelativisticHeavyIonColliderBrookhavenNationalLab2counter-circulatingrings3.834kmcircumferenceSuperconductingmagnets(3.5T)192dipolesperring246quadrupolesperringTimebetweencollisions:0.213microsecondsCrossingangle:0Bunchlength:20cmBunchesperring:56Luminositylifetime:3-10hoursParticlesperbunch(units1010):Au+Au