3-point functions from twisted mass lattice QCD at small quark masses

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dc.creatorCapitani, S.
dc.creatorJansen, K.
dc.creatorPapinutto, M.
dc.creatorShindler, A.
dc.creatorWetzorke, I.
dc.creatorUrbach, C.
dc.date2005-10-04
dc.date.accessioned2026-07-07T06:23:01Z
dc.date.available2026-07-07T06:23:01Z
dc.descriptionWe show at the example of the matrix element between pion states of a twist-2, non-singlet operator that Wilson twisted mass fermions allow to compute this phenomenologically relevant quantitiy at small pseudo scalar masses of O(270 MeV). In the quenched approximation, we investigate the scaling behaviour of this observable that is derived from a 3-point function by applying two definitions of the critical mass and find a scaling compatible with the expected O(a^2) behaviour in both cases. A combined continuum extrapolations allows to obtain reliable results at small pion masses, which previously could not be explored by lattice QCD simulations.
dc.description6 pages, 2 figures, talk presented at Lattice 2005
dc.identifierhttps://arxiv.org/abs/hep-lat/0510023
dc.identifierhttp://arxiv.org/abs/hep-lat/0510023
dc.identifierPoS LAT2005 (2005) 341
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/96095
dc.subjectHigh Energy Physics - Lattice
dc.title3-point functions from twisted mass lattice QCD at small quark masses
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