Twisted mass fermions: neutral pion masses from disconnected contributions

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dc.creatorFarchioni, F.
dc.creatorJansen, K.
dc.creatorMcNeile, C.
dc.creatorMichael, C.
dc.creatorMontvay, I.
dc.creatorNagai, K.
dc.creatorPapinutto, M.
dc.creatorPickavance, J.
dc.creatorScholz, E.
dc.creatorScorzato, L.
dc.creatorShindler, A.
dc.creatorUkita, N.
dc.creatorUrbach, C.
dc.creatorWenger, U.
dc.creatorWetzorke, I.
dc.date2005-09-13
dc.date.accessioned2026-07-07T11:43:22Z
dc.date.available2026-07-07T11:43:22Z
dc.descriptionTwisted mass fermions allow light quarks to be explored but with the consequence that there are mass splittings, such as between the neutral and charged pion. Using a direct calculation of the connected neutral pion correlator and stochastic methods to evaluate the disconnected correlations, we determine the neutral pion mass. We explore the dependence on lattice spacing and quark mass in quenched QCD. For dynamical QCD, we determine the sign of the splitting which is linked, via chiral PT, to the nature of the phase transition at small quark mass.
dc.description6 pages, poster (hadron spectrum and quark masses) at Lattice 2005,Dublin, July 25-30
dc.identifierhttps://arxiv.org/abs/hep-lat/0509036
dc.identifierhttp://arxiv.org/abs/hep-lat/0509036
dc.identifierPoSLAT2005:033,2006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201212
dc.subjectHigh Energy Physics - Lattice
dc.titleTwisted mass fermions: neutral pion masses from disconnected contributions
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