QCD isospin breaking in meson masses, decay constants and quark mass ratios

被引：191

作者：

Amoros, G

Bijnens, J

Talavera, P

机构：

[1] Lund Univ, Dept Theoret Phys 2, S-22362 Lund, Sweden

[2] Univ Politecn Valencia, Dept Fis Teor, IFIC, CSIC, E-46071 Valencia, Spain

[3] Univ Paris 11, Inst Phys Nucl, Grp Phys Theor, F-91406 Orsay, France

来源：

NUCLEAR PHYSICS B | 2001年 / 602卷 / 1-2期

关键词：

D O I：

10.1016/S0550-3213(01)00121-3

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The procedure to calculate masses and matrix-elements in the presence of mixing of the basis states is explained in detail. We then apply this procedure to the two-loop calculation in Chiral Perturbation Theory of pseudoscalar masses and decay constants including quark mass isospin breaking. These results are used to update our analysis of K-l4 done previously and obtain a value of m(u)/m(d) in addition to values for the low-energy-constants L-i(r). (C) 2001 Published by Elsevier Science B.V.

引用

页码：87 / 108

页数：22

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