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

RBC UKQCD Collaborations; Peter Boyle; A. Juettner; Richard 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

RBC UKQCD Collaborations, Peter Boyle, A. Juettner, Richard Kenway, C. T. Sachrajda, S. Sasaki, A. Soni, R. J. Tweedie, J. M. Zanotti

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We present the first results for the K-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-l3 decays leads to vertical bar V-us vertical bar=0.2249(14), reducing the uncertaintity in this important parameter. For the O(p(6)) term in the chiral expansion we obtain Delta f=-0.013(5).

Original language	English
Article number	141601
Number of pages	4
Journal	Physical Review Letters
Volume	100
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevLett.100.141601
Publication status	Published - 11 Apr 2008

Keywords

CHIRAL FERMIONS
DECAYS

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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 K-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-l3 decays leads to vertical bar V-us vertical bar=0.2249(14), reducing the uncertaintity in this important parameter. For the O(p(6)) term in the chiral expansion we obtain Delta f=-0.013(5).",

keywords = "CHIRAL FERMIONS, DECAYS",

author = "{RBC UKQCD Collaborations} and Peter Boyle and A. Juettner and Richard Kenway and Sachrajda, {C. T.} and S. Sasaki and A. Soni and Tweedie, {R. J.} and Zanotti, {J. M.}",

note = "4 pages, 3 figures, 4 tables, matches version appearing in Phys.Rev.Lett",

year = "2008",

month = apr,

day = "11",

doi = "10.1103/PhysRevLett.100.141601",

language = "English",

volume = "100",

journal = "Physical Review Letters",

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T1 - Kl3 semileptonic form factor from (2+1)-flavor lattice QCD

AU - RBC UKQCD Collaborations

AU - Boyle, Peter

AU - Juettner, A.

AU - Kenway, Richard

AU - Sachrajda, C. T.

AU - Sasaki, S.

AU - Soni, A.

AU - Tweedie, R. J.

AU - Zanotti, J. M.

N1 - 4 pages, 3 figures, 4 tables, matches version appearing in Phys.Rev.Lett

PY - 2008/4/11

Y1 - 2008/4/11

N2 - We present the first results for the K-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-l3 decays leads to vertical bar V-us vertical bar=0.2249(14), reducing the uncertaintity in this important parameter. For the O(p(6)) term in the chiral expansion we obtain Delta f=-0.013(5).

AB - We present the first results for the K-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-l3 decays leads to vertical bar V-us vertical bar=0.2249(14), reducing the uncertaintity in this important parameter. For the O(p(6)) term in the chiral expansion we obtain Delta f=-0.013(5).

KW - CHIRAL FERMIONS

KW - DECAYS

UR - http://www.scopus.com/inward/record.url?scp=42149149232&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.100.141601

DO - 10.1103/PhysRevLett.100.141601

M3 - Article

VL - 100

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 14

M1 - 141601

ER -

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

Abstract

Keywords

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