Kl3 semileptonic form factor from (2+1)-flavor lattice QCD

P. A. Boyle; A. Jüttner; R. D. Kenway; C. T. Sachrajda; S. Sasaki; A. Soni; R. J. Tweedie; J. M. Zanotti

doi:10.1103/PhysRevLett.100.141601

Kl3 semileptonic form factor from (2+1)-flavor lattice QCD

P. A. Boyle, A. Jüttner, R. D. Kenway, C. T. Sachrajda, S. Sasaki, A. Soni, R. J. Tweedie, J. M. Zanotti

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98 Citations (Scopus)

Abstract

We present the first results for the Kl3 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 |Vus|=0.2249(14), reducing the uncertaintity in this important parameter. For the O(p6) term in the chiral expansion we obtain Î"f=-0.013(5).

Original language	English
Article number	141601
Journal	Physical review letters
Volume	100
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevLett.100.141601
Publication status	Published - 2008 Apr 9
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.100.141601

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title = "Kl3 semileptonic form factor from (2+1)-flavor lattice QCD",

abstract = "We present the first results for the Kl3 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 |Vus|=0.2249(14), reducing the uncertaintity in this important parameter. For the O(p6) term in the chiral expansion we obtain {\^I}{"}f=-0.013(5).",

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AU - Boyle, P. A.

AU - Jüttner, A.

AU - Kenway, R. D.

AU - Sachrajda, C. T.

AU - Sasaki, S.

AU - Soni, A.

AU - Tweedie, R. J.

AU - Zanotti, J. M.

PY - 2008/4/9

Y1 - 2008/4/9

N2 - We present the first results for the Kl3 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 |Vus|=0.2249(14), reducing the uncertaintity in this important parameter. For the O(p6) term in the chiral expansion we obtain Î"f=-0.013(5).

AB - We present the first results for the Kl3 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 |Vus|=0.2249(14), reducing the uncertaintity in this important parameter. For the O(p6) term in the chiral expansion we obtain Î"f=-0.013(5).

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Kl3 semileptonic form factor from (2+1)-flavor lattice QCD

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