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Neutral mesons and disconnected diagrams in Twisted Mass QCD

Michael, Chris and Urbach, Carsten (2007) Neutral mesons and disconnected diagrams in Twisted Mass QCD. In: The XXV International Symposium on Lattice Field Theory, July 30 - August 4 2007, Regensburg, Germany.

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Abstract

We evaluate properties of neutral mesons in Nf=2 dynamical simulations of TMQCD at maximal twist. The pion is explored - establishing the size of the isospin splitting (an order a^2 effect). We investigate the eta' (the Nf=2 flavour singlet pseudoscalar meson) and neutral rho and scalar mesons. We show that disconnected diagrams can be evaluated very efficiently in TMQCD using variance reduction methods.

Item Type:Conference or Workshop Item (Paper)
Additional Information:LTH - 761; arXiv Number: arXiv:0709.4564v1. Additional citation information: PoS(LATTICE 2007)122. Conference ID: LATTICE 2007 Article ID: 122. 7 pages.
Uncontrolled Keywords:TMQCD; isospin splitting; pseudoscalar meson; scalar mesons; flavour singlet
Subjects:Q Science > QC Physics
Departments, Research Centres and Related Units:Academic Faculties, Institutes and Research Centres > Faculty of Science > Department of Mathematical Sciences
Publisher's Statement:Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence. The author(s) and right holder(s) of such contributions grant(s) to all users a free, irrevocable, worldwide, right of access to, and a license to copy, use, distribute, transmit and display the work publicly and to make and distribute derivative works, in any digital medium for any responsible purpose, subject to proper attribution of authorship (community standards, will continue to provide the mechanism for enforcement of proper attribution and responsible use of the published work, as they do now), as well as the right to make small numbers of printed copies for their personal use.
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Refereed:Yes
Status:Published
ID Code:351
Deposited On:15 Aug 2008 14:57
Last Modified:20 May 2011 17:00

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