Jansen, K.; McNeile, C.; Michael, C.; Nagai, K.; Papinutto, M.; Pickavance, J.; Shindler, A.; Urbach, C. and Wetzorke, I. (2005) Flavour breaking effects of Wilson twisted mass fermions. Physics Letters B, 624 (3-4). pp. 334-341. ISSN 0370-2693
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Official URL: http://www.elsevier.com/wps/find/journaldescriptio...
We study the flavour breaking effects appearing in the Wilson twisted mass formulation of lattice QCD. In this quenched study, we focus on the mass splitting between the neutral and the charged pion, determining the neutral pion mass with a stochastic noise method to evaluate the disconnected contributions. We find that these disconnected contributions are significant. Using the Osterwalder-Seiler interpretation of the connected piece of the neutral pion correlator, we compute the corresponding neutral pion mass to study with more precision the scaling behaviour of the mass splitting.
|Additional Information:||LTH 657; arXiv Number: arXiv:hep-lat/0507032v1. Available online 19 August 2005. Issue: 29 September 2005.|
|Uncontrolled Keywords:||LATTICE QCD; PHASE-STRUCTURE; QUARKS|
|Subjects:||Q Science > QC Physics|
|Departments, Research Centres and Related Units:||Academic Faculties, Institutes and Research Centres > Faculty of Science > Department of Mathematical Sciences|
|Deposited On:||18 Aug 2008 13:58|
|Last Modified:||20 May 2011 14:50|
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