Four-pion production in tau decays and e+e- annihilation: an update

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dc.creatorCzyz, Henryk
dc.creatorKuhn, Johann H.
dc.creatorWapienik, Agnieszka
dc.date2008-04-01
dc.date2008-04-23
dc.date.accessioned2026-07-07T11:33:28Z
dc.date.available2026-07-07T11:33:28Z
dc.descriptionAn improved description of four-pion production in electron-positron annihilation and in tau lepton decays is presented. The model amplitude is fitted to recent data from BaBar which cover a wide energy range and which were obtained exploiting the radiative return. Predicting tau decay distributions from e+e- data and comparing these predictions with ALEPH and CLEO results, the validity of isospin symmetry is confirmed within the present experimental errors. A good description of two- and three-pion sub-distributions is obtained. Special emphasis is put on the predictions for omega pi (-> pi+pi-pi0) in e+e- annihilation and in tau decay. The model amplitude is implemented in the Monte Carlo generator PHOKHARA.
dc.descriptiona few typos corrected
dc.identifierhttps://arxiv.org/abs/0804.0359
dc.identifierhttp://arxiv.org/abs/0804.0359
dc.identifierPhys.Rev.D77:114005,2008
dc.identifierdoi:10.1103/PhysRevD.77.114005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/197907
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.titleFour-pion production in tau decays and e+e- annihilation: an update
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