National Taiwan University Dept PhysKao, Chung-WenChung-WenKaoYang, Shin-NanShin-NanYang2006-11-142018-06-282006-11-142018-06-281996http://ntur.lib.ntu.edu.tw//handle/246246/2006111501243646The charge dependence of the nucleon-nucleon scattering length due to the quark effects are examined in a quark cluster model. In addition to the effects induced by the up-down quark mass difference & quark-exchange Coulomb interaction, we consider the interference effects of QCD & QED suggested by Maltman, Stephenson, & Goldman. We find that the total contribution of the quark effects to app - an,, is large & in the direction indicated by the experiments. The effect is, however, small for a,, - a,,,.application/pdf432355 bytesapplication/pdfzh-TWCharge symmetry breakingCharge independence breakingUp-down quark mass differenceQED-QCD interference effectsjournal article10.1016/0370-2693(96)01165-3http://ntur.lib.ntu.edu.tw/bitstream/246246/2006111501243646/1/10032.pdf