Contribution to a conference proceedings/Internal Report

FZJ-2015-05002

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Nonperturbative renormalisation for low moments of light-meson distribution amplitudes

Flynn, J. (Corresponding author) ; Arthur, R. ; Boyle, P. ; Brömmel, D.FZJ* ; Jüttner, A. ; Sachrajda, C. ; Rae, T.

2014

Report No.: PoS(LATTICE2014)168

Abstract: We discuss nonperturbative renormalisation of the leading-twist flavour non-singlet operators needed for the calculation of the first and second moments of light-meson distribution ampli- tudes. On the lattice we use a regularisation-independent symmetric (or non-exceptional) mo- mentum scheme, RI/SMOM, which, for the second moment, allows us to include mixing with a total-derivative operator. We calculate the conversion functions needed to connect the RI/SMOM results to MSbar

Keyword(s): renormalization: nonperturbative ; distribution amplitude ; operator: mixing ; parton: distribution function: calculated ; pi: generalized parton distribution ; parton: distribution function: moment

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Contributing Institute(s):

1. Jülich Supercomputing Center (JSC)

Research Program(s):

1. 511 - Computational Science and Mathematical Methods (POF3-511) (POF3-511)

Appears in the scientific report 2015

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