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arxiv: hep-ph/0209056 · v2 · submitted 2002-09-05 · ✦ hep-ph

Four-pion production

classification ✦ hep-ph
keywords four-pionproductionamplitudesannihilationavailablebranchingcomparedcross
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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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