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Type: Journal article
Title: Kl₃ semileptonic form factor from (2+1)-flavor lattice QCD
Other Titles: K(l3) semileptonic form factor from (2+1)-flavor lattice QCD
Author: Boyle, P.
Juttner, A.
Kenway, R.
Sachrajda, C.
Sasaki, S.
Soni, A.
Tweedie, R.
Zanotti, J.
Citation: Physical Review Letters, 2008; 100(14):141601:1-141601:4
Publisher: American Physical Soc
Issue Date: 2008
ISSN: 0031-9007
Statement of
P. A. Boyle, A. Jüttner, R. D. Kenway, C. T. Sachrajda, S. Sasaki, A. Soni, R. J. Tweedie, and J. M. Zanotti (RBC+UKQCD Collaborations)
Abstract: We present the first results for the K(sub)l3 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 K(sub)l3 decays leads to |V(sub)us|=0.2249(14), reducing the uncertaintity in this important parameter. For the O(p⁶) term in the chiral expansion we obtain Δf=-0.013(5).
Keywords: RBC+UKQCD Collaborations
Rights: © 2008 The American Physical Society
RMID: 0020120164
DOI: 10.1103/PhysRevLett.100.141601
Appears in Collections:Chemistry and Physics publications

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