Abstract
We give the normalized leading asymptotic Q2 dependence of the pion form factor in quantum chromodynamics: Fπ(Q2)→Q2→±∞-2fπ2/bQ2ln|Q2|, where fπ is the pion decay constant and b=(11-2/3Nf)/16π2. Up to non-leading-logarithmic corrections, this is equivalent to Fπ(Q2)→Q2→±∞8παs(Q2)fπ2/(-Q2). These results are obtained by solving the light-cone pion Bethe-Salpeter equation in quantum chromodynamics to leading-logarithmic accuracy.
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