Hadronic matrix elements for TAUOLA: 3 pi and KKpi channels

Abstract

We emphasize that the motivation for including our hadronic matrix elements in TAUOLA is not only theoretical. We also show that our expressions describe better the tau to 3pi ALEPH data and are able to fit BABAR data on the isovector component of e^+e^- -> KKpi. The theoretical foundations of our framework are the large-N_C limit of QCD, the chiral structure exhibited at low energies and the proper asymptotic behaviour, ruled by QCD, that is demanded to the associated form factors.

Comments: 6 pages, 2 figures. To appear in the Proceedings of TAU 08: 10th International TAU Conference, September 22-25, 2008. BINP Novosibirsk (Russia). To be published by Elsevier in Nuclear Physics B (Proceedings Supplement)