New limit of pion form factor at very large $Q^2$

Details New limit of pion form factor at very large $Q^2$ New limit of pion form factor at very large $Q^2$

2009-09-25

arxiv.org/abs/0909.4574v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages. To be published in the proceedings of DPF-2009, Detroit, MI, July 2009, eConf C090726

Scientific paper

A new limit of pion form factor at very large $Q^2$ is obtained by using a
pion wave function determined from an effective chiral field theory of mesons.
It shows that when $Q^2>>(1.8GeV)^2$ the pion form factor reaches the
asymptotic limit ${\alpha_s(Q^2)\over Q^2}$.

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