On the complete next-to-leading order pQCD prediction for the pion form factor
B. Melic, B. Nizic, K. Passek
TL;DR
This paper provides a comprehensive next-to-leading order QCD analysis of the pion electromagnetic form factor at high momentum transfer, demonstrating reliable predictions at Q below 10 GeV.
Contribution
It offers the first complete NLO pQCD calculation of the pion form factor with analysis of renormalization scale sensitivity.
Findings
Perturbative predictions are reliable for Q below 10 GeV.
Sensitivity to the renormalization scale is examined.
Results support the applicability of pQCD at moderate energies.
Abstract
We comment on the results of a complete leading-twist next-to-leading order QCD analysis of the spacelike pion electromagnetic form factor at large-momentum transfer Q. For the asymptotic distribution amplitude, we have examined the sensitivity of the predictions to the choice of the renormalization scale. The results show that reliable perturbative predictions for the pion electromagnetic form factor can already be made at a momentum transfer Q below 10 GeV.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research