Moments of nucleon distribution amplitudes from irreducible three-quark operators

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dc.creatorGöckeler, M.
dc.creatorHorsley, R.
dc.creatorKaltenbrunner, T.
dc.creatorNakamura, Y.
dc.creatorPleiter, D.
dc.creatorRakow, P. E. L.
dc.creatorSchäfer, A.
dc.creatorSchierholz, G.
dc.creatorStüben, H.
dc.creatorWarkentin, N.
dc.creatorZanotti, J. M.
dc.date2007-10-12
dc.date.accessioned2026-07-07T13:02:52Z
dc.date.available2026-07-07T13:02:52Z
dc.descriptionSemi-exclusive and exclusive processes are becoming more and more important in high energy physics since they are excellently suited to study the internal hadronic structure. To analyze such processes the knowledge of the hadron distribution amplitudes, which are universal for different reactions, is essential. Only rather indirect information on these nonperturbative functions can be obtained from measurements. In this work we report on a lattice QCD computation of moments of nucleon distribution amplitudes using suitable three-quark operators. However, these operators have to be renormalized and the mixing is even more complicated than in the continuum. Using the symmetry group of the hypercubic lattice we therefore derive and implement irreducibly transforming three-quark operators, which allow us to control the mixing pattern and will finally lead to quantitative predictions in the MSbar scheme. We present preliminary results for leading-twist and next-to-leading twist nucleon distribution amplitudes based on the QCDSF/UKQCD simulations with 2 flavors of dynamical clover fermions.
dc.description14 pages, 4 figures. Presented at 25th International Symposium on Lattice Field Theory, Regensburg, Germany, 30 Jul - 4 Aug 2007
dc.identifierhttps://arxiv.org/abs/0710.2489
dc.identifierhttp://arxiv.org/abs/0710.2489
dc.identifierPoSLAT2007:147,2007
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/226597
dc.subjectHigh Energy Physics - Lattice
dc.titleMoments of nucleon distribution amplitudes from irreducible three-quark operators
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