Resummation of infrared renormalons in the pion electromagnetic form factor calculations
Abstract
Description
The pion electromagnetic form factor F_π(Q^{2}) is calculated at the leading order of pQCD using the running coupling constant (α_{S}(Q^{2}(1-x)(1-y))) approach. The resummed expression for F_π(Q^{2}) is found. It is shown that the effect of the infrared renormalons can be taken into account by scale-setting procedure $α_{S}(Q^{2}) \rightarrow α_{S}(e^{f(Q^{2})}Q^{2})$ in the leading order expression
9 pp., 2 fig
9 pp., 2 fig