文章基本信息

标题：Precision spectroscopy in light isovector, isoscalar and hybrid mesons
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作者：A. O Cais
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2006
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We discuss all-to-all propagators in the context of high statistical precision determinations of the isovector and isoscalar meson spectrum. In particular we look at the method of Ref. [2] that incorporates the low-lying eigenmodes and variance-reduced stochastic estimation. We find significant low-lying eigenmode dependence of mass determinations, with the number of required modes varying with the symmetry channel. We observe that the mass of a large number of traditionally noisy symmetry channels can be determined to 5% statistical accuracy or higher in light-light mesons.