QED-QCD mixing effect and isospin violation in S-1(0) NN scattering
Resource
Physics Letters B 388, l-4
Journal
Physics Letters B 388, l-4
Pages
-
Date Issued
1996
Date
1996
Author(s)
Kao, Chung-Wen
Yang, Shin-Nan
DOI
246246/2006111501243646
Abstract
The 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,,,.
Subjects
Charge symmetry breaking
Charge independence breaking
Up-down quark mass difference
QED-QCD interference effects
Publisher
Taipei:National Taiwan University Dept Phys
Type
journal article
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