Low energy constants from K-l4 form-factors

Authors
Amoros, G Bijnens, J Talavera, P
Citation
G. Amoros et al., Low energy constants from K-l4 form-factors, PHYS LETT B, 480(1-2), 2000, pp. 71-76
Citations number
23
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
03702693 → ACNP
Volume
480
Issue
1-2
Year of publication
2000
Pages
71 - 76
Database
ISI
SICI code
0370-2693(20000504)480:1-2<71:LECFKF>2.0.ZU;2-Z
Abstract
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 tog ether 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 uncertain ties in the determination and the changes compared to previous estimates. ( C) 2000 Elsevier Science B.V. All rights reserved.