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arXiv · hep-ph/0209056

Four-pion production

G. Ecker·R. Unterdorfer
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Abstract

Starting from the low-energy structure derived from QCD, we extend the amplitudes for four-pion production in e+ e- annihilation and tau decays up to invariant four-pion masses of 1 GeV. Cross sections and branching ratios BR(rho^0 -> 4 pi) are compared with available data.

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G. Ecker, R. Unterdorfer. 2002-09-13. Four-pion production. https://doi.org/10.1016/s0920-5632(03)80352-3

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