QED-QCD Interference Effect on the Charge Dependent N-N Interaction
The charge symmetry breaking and charge independence breaking N–N1S0 scattering length differences, ΔaCSB and ΔaCIB, are calculated by a resonating group method with a quark cluster model. By adding the QED–QCD interference effect to the quark mass difference and the electromagnetic interaction, the ΔaCSB and ΔaCIB values can be reproduced with model parameters constrained by the hadron isomultiplet mass splitting.