Precision Measurement of R, and Rtof Quasi-Elastic Electron ScatteringIn the Momentum Transfer RangeYan XinhuDepartmentofModernPhysics of USTC2008/04/28*Supported bytheNational Natural ScienceFoundationofChina(10605022)andNatural ScienceFoundationofAnhuiEducationalCommittee(KJ2007B028)
Precision Measurement of RL and RT of Quasi-Elastic Electron Scattering In the Momentum Transfer Range Yan Xinhu Department of Modern Physics of USTC 2008/04/28 国家自然科学基金子 * Supported by the National Natural Science Foundation of China(10605022) and Natural Science Foundation of Anhui Educational Committee(KJ2007B028)
Outline1.lntroduction2.CSRExperiment(E05-110)atJLab3.Summary
Outline 1.Introduction ２.CSR Experiment (E05-110) at JLab ３.Summary
1.lntroductionMotivation:How can we connect the low energytheories and highEnergytheory (QcD)?Hownucleonpropertiesareaffectedbythenuclearmedium?
1.Introduction Motivation: How nucleon properties are affected by the nuclear medium? How can we connect the low energy theories and high Energy theory (QCD) ?
e'e.g.p,nInclusive (e,e) scattering (where only the final electron is ob-served)providesinformationabout. the nuclear Fermi momentum (width of the quasielastiopeak)the high-momentum components of nucleon wave func-tions (tail ofthequasielasticpeak)modifications of the nucleon form factorsinsidea nucleusinformation about infinite nuclear matter by extrapolationA→8
ResponseFunctionsOne photonexchange assumption,inclusiveelectron scatteringd?0QR,(l q l,の)R,(lql,)dQdo2g8qCoulombSumT.deForest,Jr.,Nucl.Phys.A414(1984)347
⚫ Response Functions ⚫ Coulomb Sum 2 2 1 2 2 (||,)[1 tan]2 q q Q =+ − 0 2 1 (,) () E L L G Sq d Rq Z = + 2 2 2 22 22 2 2 ()([()](/)[()])14 12 p n GQGQNZGQ E E E = + + + QM QM One photon exchange assumption , inclusive electron scattering 2 T. de Forest, Jr., Nucl. Phys. A414 (1984) 347