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|
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|Deposited On:||18 Aug 2008 11:59|
|Last Modified:||20 May 2011 16:02|
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