Pseudoscalar Vertex, Goldstone Boson and Quark Masses on the Lattice

Details Pseudoscalar Vertex, Goldstone Boson and Quark Masses on the Lattice Pseudoscalar Vertex, Goldstone Boson and Quark Masses on the Lattice

1998-10-27

arxiv.org/abs/hep-lat/9810058v2

Phys.Lett. B454 (1999) 105-114

Physics

High Energy Physics

High Energy Physics - Lattice

13 pages, 6 eps figures, LaTeX. Minor modifications to the text, and corrections to Fig. 6

Scientific paper

10.1016/S0370-2693(99)00339-1

We analyse the Structure Function collaboration data on the quark pseudoscalar vertex and extract the Goldstone boson pole contribution, in 1/p2. The strength of the pole is found to be quite large at presently accessible scales. We draw the important consequences of this finding for the various definitions of quark masses, and point out potential problems with the operator product expansion.

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