A Gauge Invariant Electromagnetic Two-Point Function For Heavy Light Quark Systems
arXiv:hep-ph/9409377 · doi:10.1103/PhysRevLett.74.2168
Abstract
A gauge invariant electromagnetic two-point function, crucial to the investigations of the violation of isospin symmetry, is derived for heavy-light quark systems. Thus QED can be consistently introduced into the QCD Sum Rule method, which was not previously possible.
7 page in Latex, and 2 ps. figure can be obtained from the author