Chiral extrapolations and exotic meson spectrum

被引：16

作者：

Thomas, AW ^{[1
]}

Szczepaniak, AP

机构：

[1] Univ Adelaide, Special Res Ctr Subatom Struct Matter, Adelaide, SA 5005, Australia

[2] Univ Adelaide, Dept Phys & Math Phys, Adelaide, SA 5005, Australia

[3] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA

[4] Indiana Univ, Ctr Nucl Theory, Bloomington, IN 47405 USA

来源：

PHYSICS LETTERS B | 2002年 / 526卷 / 1-2期

基金：

澳大利亚研究理事会;

关键词：

D O I：

10.1016/S0370-2693(01)01481-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We examine the chiral corrections to exotic meson masses calculated in lattice QCD. In the soft pion limit we find that corrections from virtual, closed channels lead to strong non-linear behavior which has been found in other hadronic systems. We find the resulting mass shifts to be as large as 100 MeV and therefore large corrections to the predictions of exotic meson masses based on linear extrapolations to the chiral limit are expected. Furthermore, by considering a class of phenomenologically successful hybrid meson models we show that this behavior is not altered by contributions from open decay channels. (C) 2002 Published by Elsevier Science B.V.

引用

页码：72 / 78

页数：7

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