Non-perturbative renormalization of three-quark operators

Roger Horsley, Meinulf Gockeler, Thomas Kaltenbrunner, Yoshifumi Nakamura, Dirk Pleiter, Paul Rakow, Andreas Schafer, Gerrit Schierholz, Hinnerk Stuben, Niklaus Warkentin, James Zanotti

Research output: Contribution to journalArticlepeer-review

Abstract

High luminosity accelerators have greatly increased the interest in semi-exclusive and exclusive reactions involving nucleons. The relevant theoretical information is contained in the nucleon wavefunction and can be parametrized by moments of the nucleon distribution amplitudes, which in turn are linked to matrix elements of local three-quark operators. These can be calculated from first principles in lattice QCD. Defining an RI-MOM renormalization scheme, we renormalize three-quark operators corresponding to low moments non-perturbatively and take special care of the operator mixing. After performing a scheme matching and a conversion of the renormalization scale we quote our final results in the MSbar scheme at mu=2 GeV
Original languageEnglish
Pages (from-to)205-242
Number of pages49
JournalNuclear physics b
Volume812
DOIs
Publication statusPublished - 1 May 2009

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