The Second Moment of the Pion Light Cone Wave Function

Details The Second Moment of the Pion Light Cone Wave Function The Second Moment of the Pion Light Cone Wave Function

2002-11-21

arxiv.org/abs/hep-lat/0211037v1

Nucl.Phys.Proc.Suppl.119:416-418,2003

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, proceedings of the Lattice 2002 conference

Scientific paper

10.1016/S0920-5632(03)01572-X

We present a preliminary result for second moment of the light cone wave function of the pion. This parameter is the subject of a discrepancy between theoretical predictions (coming from lattice and sum rules) and a recent experimental result (that remarkably agrees with purely perturbative predictions). In this work we exploit lattice hypercubic symmetries to remove power divergences and, moreover, implement a full 1-loop matching for all the contributing operators.

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