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Scholarly Communication

Scalar glueball and meson spectroscopy in unquenched lattice QCD with improved staggered quarks

Gregory, Eric B.; Irving, Alan C.; McNeile, Craig C; Miller, Steven and Sroczynski, Zbyszek (2005) Scalar glueball and meson spectroscopy in unquenched lattice QCD with improved staggered quarks. In: XXIIIrd International Symposium on Lattice Field Theory, 25-30 July 2005, Trinity College, Dublin.

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We present results of an exploratory study of singlet scalar states in unquenched QCD using both glueball and meson operators. Results for non-singlet non-strange scalar mesons are also presented. We use Asqtad improved staggered fermions and gauge configurations generated by the MILC collaboration at lattice spacings of .12 and .09 fm. In this formulation, the glueball mass is not significantly different from the quenched value at finite lattice spacing. Significant taste violations are present in the scalar sector. At light quark masses, decay channels complicate the mass determinations. There is some evidence that the non-strange singlet meson lies below the non-singlet meson.

Item Type:Conference or Workshop Item (Paper)
Additional Information:LTH 673; arXiv Number: arXiv:hep-lat/0510066v1. Additional citation information: PoS LAT2005 (2005) 027. Article ID: 027. 6 pages.
Uncontrolled Keywords:exploratory study; singlet scalar; unquenched QCD; glueball; meson operators; non-singlet; non-strange; Asqtad; staggered fermions; gauge; MILC collaboration; taste violations; scalar sector; light quark masses; decay channels; non-strange singlet meson; non-singlet meson
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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ID Code:399
Deposited On:18 Aug 2008 11:59
Last Modified:20 May 2011 16:02

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