Renormalon Model of Twist-4 Corrections to the Pion Distribution Amplitude

Details Renormalon Model of Twist-4 Corrections to the Pion Distribution Amplitude Renormalon Model of Twist-4 Corrections to the Pion Distribution Amplitude

1999-09-16

arxiv.org/abs/hep-ph/9909396v2

Phys.Lett. B475 (2000) 141-146

Physics

High Energy Physics

High Energy Physics - Phenomenology

Uses feynmp. Revised version published in PLB

Scientific paper

10.1016/S0370-2693(00)00052-6

In this paper we describe a renormalon-inspired model of twist--4 power corrections to the light-cone pion distribution amplitude, and compare it to the results obtained using the conformal wave expansion. We find that the overall functional form predicted in this renormalon model is similar to the one predicted in the standard approach to higher twist contributions involving an expansion in conformal operators. However, small discrepancies at the end-points allow for a discussion on the convergence properties of the conformal expansion.

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