g ω ρ π reexamined Academic Article uri icon


  • During the last several years, there has been a significant increase in the interest in low energy QCD and in under- standing low energy hadron dynamics. This happened both due to the theoretical progress and to the availability of new experimental data. However, the problem of understanding the low energy properties of hadrons is still far from being solved, due to the need to understand the nonperturbative QCD effects that govern hadron dynamics. QCD sum rules, first suggested by Shifman, Vainshtein, and Zakharov 1 see also Ref. 2 for an extensive review, historically have been one of the most effective tools used to study low energy properties of hadrons. The method was successfully applied to numerous low energy problems, such as the determination of the mass spectrum of the low-lying resonances, of the form factors etc. The goal of the present paper is to use QCD sum rules in order to calculate the → transition constant. Let us re- call that …

publication date

  • January 1, 1997