# The QCD non-perturbative contribution to the axial form factor in radiative pion decay

@article{Nasrallah1982TheQN,
title={The QCD non-perturbative contribution to the axial form factor in radiative pion decay},
author={Nasrallah F. Nasrallah and Nikolaos A. Papadopoulos and Karl Schilcher},
journal={Physics Letters B},
year={1982},
volume={113},
pages={61-64}
}
• Published 3 June 1982
• Physics
• Physics Letters B
38 Citations
Functional approach to QCD finite-energy sum rules
A new method for the determination of the QCD condensates from low-energy hadronic data is proposed. It generalizes the usual QCD finite-energy sum rules, taking into account explicitely the
The electromagnetic mass difference of pions from asymptotic QCD
• Physics
• 1983
AbstractWe show how the asymptotic behaviour of an analytic amplitude can yield information on the amplitude at small space-like momenta. Applying this to QCD two-point functions, we are able to

## References

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• Physics
• 1982
A new measurement of the elastic scattering of 250-GeV/c negative pions by electrons provides form-factor results from 0.0368 = 0.439 +- 0.030 fm/sup 2/ or /sup 1/2/ = 0.663 +- 0.023 fm. Comparisons
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• Physics
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We have measured the electromagnetic form factor of the charged pion by direct scattering of 100-GeV/c ..pi../sup -/ from stationary electrons in a liquid-hydrogen target at Fermilab. The deviations
Precise Relations between the Spectra of Vector and Axial-Vector Mesons
Two sum rules are derived, relating moments of the spectral functions of the vector and axial-vector currents. If it is assumed that the $\ensuremath{\rho}$ and $A1$ mesons dominate these moments,
Determination of the Axial-Vector Form Factor in the Radiative Decay of the Pion
• Materials Science, Mathematics
• 1974
The branching ratio for the decay $\ensuremath{\pi}\ensuremath{\rightarrow}e\ensuremath{\nu}\ensuremath{\gamma}$ has been measured in a counter experiment in which the ${e}^{+}$ was detected in a