On the role of $a_1(1260)$ meson in the $\tau \to 4\pi {\nu }_{\tau }$ decay

Abstract

We demonstrate that a simple model successfully describing experimental data for the process $\epm\to 4π$ can also qualitatively account for the data of CLEOII and ALEPH obtained recently for the decay $\tau \to 4\pi {\nu }_{\tau }$. The model is based on the assumption of the $a_1(1260)\pi$ and $\omega \pi$ dominance as intermediate states. Our observation is in contrast with the claim by ARGUS that the $\rho$-meson signal in the $\tau \to 4\pi {\nu }_{\tau }$ decay can not be explained by the $a_1\pi$ intermediate state.

18 pages, 10 figures, LaTex

References in corpus (2)

• a_1(1260) dominance in the process e+e- \to 4πat energies 1.05--1.38 GeV
• On the role of $a_1(1260)$ meson in the $\tau \to 4\pi {\nu }_{\tau }$ decay

Cited by in corpus (11)

• The $\epem\toπ^+π^-π^+π^-$, $K^{+}{K}^{-}{\pi }^{+}{\pi }^{-}$, and $K^{+}{K}^{-}{K}^{+}{K}^{-}$ Cross Sections at Center-of-Mass Energies 0.5--4.5 \gev Measured with Initial-State Radiation
• Study of the Process e+ e- --> omega pi0 --> pi0 pi0 gamma in c.m. Energy Range 920--1380 MeV at CMD-2
• Cross section of the reaction $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{\pi }^{+}{\pi }^{-}$ below 1 GeV at CMD-2
• Initial-State Radiation Measurement of the e+e- -> pi+pi-pi+pi- Cross Section
• Total Cross Section of the Process e+e- -> pi+pi-pi+pi- in the C.M.Energy Range 980-1380 MeV
• Electron-positron annihilation into four charged pions and the a_1-rho-pi Lagrangian
• Novosibirsk hadronic currents for tau -> 4pi channels of tau decay library TAUOLA
• On the role of $a_1(1260)$ meson in the $\tau \to 4\pi {\nu }_{\tau }$ decay
• Cross section and polarization observables for the reaction $e^{+}+e^{-}\to a_1(1260)+\pi$
• Status report on TAUOLA, its environment, and its applications
• Charge asymmetry in the process $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{\pi }^0\gamma$