Kl3 decays in chiral perturbation theory

被引：136

作者：

Bijnens, J

Talavera, P

机构：

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

[2] Univ Politecn Cataluna, Dept Fis & Engn Nucl, E-08034 Barcelona, Spain

来源：

NUCLEAR PHYSICS B | 2003年 / 669卷 / 1-2期

关键词：

D O I：

10.1016/S0550-3213(03)00581-9

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 process K-l3 is calculated to two-loop order (p(6)) in chiral perturbation theory (ChPT) in the isospin conserved case. We present expressions suitable for use with previous work in two-loop ChPT where the order p(4) parameters (L-i(r)) were determined from experiment. We point out that all the order p(6) parameters (C-i(r)) that appear in the value of f(+)(0) relevant for the determination of \V-us\ can be determined from K-l3 measurements via the slope and the curvature of the scalar form-factor. As by product we update the value of the CKM matrix element \V-us\. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：341 / 362

页数：22

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