Low energy constants from Kl4 form-factors

被引：43

作者：

Amorós, G

Bijnens, J

Talavera, P

机构：

[1] Univ Helsinki, Dept Phys, FIN-00014 Helsinki, Finland

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

来源：

PHYSICS LETTERS B | 2000年 / 480卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(00)00384-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have calculated the form-factors F and G in K --> pi pi lv decays (K-l4) to two-loop order in Chiral Perturbation Theory (ChPT). Combining this together with earlier two-loop calculations an updated set of values for the L-i(r), the ChPT constants at O(p(4)), is obtained. We discuss the uncertainties in the determination and the changes compared to previous estimates. (C) 2000 Elsevier Science B.V. All rights reserved.

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页码：71 / 76

页数：6

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