a_1πContribution to e^+e^-\to 4πAnnihilation and τ\to 4πν_τ Decay

A. I. Milstein

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arXiv · hep-ex/0001050

a_1πContribution to e^+e^-\to 4πAnnihilation and τ\to 4πν_τ Decay

A. I. Milstein

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Abstract

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.

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A. I. Milstein. 2000-01-21. a_1πContribution to e^+e^-\to 4πAnnihilation and τ\to 4πν_τ Decay. https://arxiv.org/abs/hep-ex/0001050

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