a_1πContribution to e^+e^-\to 4πAnnihilation and τ\to 4πν_τ Decay
Abstract
Description
The results of the study of the process e^+e^- \to 4πby the CMD-2 collaboration at VEPP-2M are presented. Analysis of the differential distributions demonstrates the dominance of the a_1πand ωπintermediate states. Simple model, based on the assumption of a_1(1260)πand ωπdominance as intermediate states, successfully describes also the data of CLEOII and ALEPH obtained recently for the decay τ\to 4πν_τ.
9 pages, Latex, Talk at Int. Workshop "Physics and Detectors for DAFNE"- Fraskati, Nov.16-19, 1999
9 pages, Latex, Talk at Int. Workshop "Physics and Detectors for DAFNE"- Fraskati, Nov.16-19, 1999