부산대학교 도서관

We study the hadronic vacuum polarization in the resonance energy region, using the framework given by the Resonance Effective Theory of QCD. We consider the incorporation of vector-pseudoscalar meson loops that give, inclusively, three and four pseudoscalar meson cuts. After resummation we achieve a QCD-based inclusive parameterization of the correlator, hence of the hadronic cross-section in the energy region populated by resonances.
Comment: 6 pages, 5 figures. To appear in the Proceedings of the Workshop on Hadronic Cross-Section at Low Energy (SIGHAD03), 8th-10th October 2003, Pisa (Italy)