Kl3 semileptonic form factor from (2+1)-flavor lattice QCD.
Phys Rev Lett
; 100(14): 141601, 2008 Apr 11.
Article
em En
| MEDLINE
| ID: mdl-18518021
ABSTRACT
We present the first results for the K13 form factor from simulations with 2+1 flavors of dynamical domain wall quarks. Combining our result, namely, f+(0)=0.964(5) with the latest experimental results for Kl3 decays leads to |V us|=0.2249(14), reducing the uncertaintity in this important parameter. For the O(p6) term in the chiral expansion we obtain Delta f=-0.013(5).
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Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2008
Tipo de documento:
Article