Four-pion production
高能物理 - 唯象学
2009-11-07 v2
摘要
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.
关键词
引用
@article{arxiv.hep-ph/0209056,
title = {Four-pion production},
author = {G. Ecker and R. Unterdorfer},
journal= {arXiv preprint arXiv:hep-ph/0209056},
year = {2009}
}
备注
4 pages, 3 figures, contribution to Proc. of QCD'02, Montpellier, July 2002, misprints corrected