Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-07-21
Nucl.Phys.Proc.Suppl. 74 (1999) 155-158
Physics
High Energy Physics
High Energy Physics - Phenomenology
10 pages, 2 figures. Talk given at the Euroconference QCD98, Montpellier 2-8th July 1998, France; to appear in Proceedings
Scientific paper
10.1016/S0920-5632(99)00153-X
The pion and kaon electromagnetic form factors $F_{M}(Q^2)$ are calculated at the leading order of pQCD using the running coupling constant method. In computations dependence of the meson distribution amplitudes on the hard scale $Q^2$ is taken into account. The Borel transform and resummed expression for $F_{M}(Q^2)$ are found. The effect of the next-to-leading order term in expansion of $\alpha_{S}(\lambda Q^2)$ in terms of $\alpha_{S}(Q^2)$ on the pion form factor $F_{\pi}(Q^2)$ is discussed, comparison is made with the infrared matching scheme's result.
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