Quenched chiral perturbation theory for vector mesons
Quenched chiral perturbation theory for vector mesons
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矢量介子的猝灭手性微扰理论
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
A. Falk
中科院分区：
文献类型：
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作者：
Michael J. Booth;G. Chiladze;A. Falk
我们在矢量介子质量远大于π介子质量的极限下，发展了由轻夸克组成的矢量介子的猝灭手性微扰理论。我们使用这个理论来提取矢量介子质量对光夸克质量的主要非解析依赖性。通过与普通手性微扰理论中计算的类似量进行比较，我们估计了猝灭效应的大小，观察到它们通常可能相当大。该估计与晶格模拟相关，其中 {rho} 质量通常用于设置晶格间距。 {版权} {ital 1997} {ital 美国物理学会}
We develop quenched chiral perturbation theory for vector mesons made of light quarks, in the limit where the vector meson masses are much larger than the pion mass. We use this theory to extract the leading nonanalytic dependence of the vector meson masses on the masses of the light quarks. By comparing with analogous quantities computed in ordinary chiral perturbation theory, we estimate the size of quenching effects, observing that in general they can be quite large. This estimate is relevant to lattice simulations, where the {rho} mass is often used to set the lattice spacing. {copyright} {ital 1997} {ital The American Physical Society}