Gregory, Eric B.; Irving, Alan C.; McNeile, Craig; Miller, Steven and Sroczynski, Zbigniew (2005) Pseudoscalar singlet physics with staggered fermions. In: XXIIIrd International Symposium on Lattice Field Theory, 25-30 July 2005, Trinity College, Dublin, Ireland.
Available under License Creative Commons Attribution Non-commercial Share Alike.
We report on progress in measuring disconnected correlators associated with pseudoscalar flavor-singlet mesons. This will eventually allow us to compute the masses of the eta and eta' mesons. Flavor-singlet physics also presents an interesting test of the staggered fermion formulation, as disconnected correlators are sensitive to whether the same action governs both sea quarks and valence quarks. It can also help test the validity of the ``fourth-root trick'' used in unquenched lattice calculations where the number of flavors $N_f<4$.
|Item Type:||Conference or Workshop Item (Paper)|
|Additional Information:||LTH 674; arXiv Number: arXiv:hep-lat/0509193v1. Additional citation information: PoS LAT2005 (2005) 083. Article ID: 026. 6 pages.|
|Uncontrolled Keywords:||pseudoscalar flavor-singlet mesons; eta; eta'; mesons; Flavor-singlet physics; valence quarks; fourth-root trick; unquenched lattice calculations;|
|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.|
|Deposited On:||18 Aug 2008 11:36|
|Last Modified:||20 May 2011 16:03|
Repository Staff Only: item control page