Kl3 semileptonic form factor from (2+1)-flavor lattice QCD |
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| Authors: | Boyle P A,Jüttner A,Kenway R D,Sachrajda C T,Sasaki S,Soni A,Tweedie R J,Zanotti J M RBC+UKQCD Collaborations |
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| Affiliation: | School of Physics, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom. |
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| 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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