Open AccessKl3form factor withNf= 2 +1 dynamical domain wall fermions
Author(s) -
P A Boyle,
Jonathan M. Flynn,
Andreas Jüttner,
R.D. Kenway,
Christopher Sachrajda,
Seiko Sasaki,
A. Soni,
R. J. Tweedie,
J. M. Zanotti
Publication year - 2008
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/110/0/102012
Subject(s) - extrapolation , fermion , physics , quark , particle physics , form factor (electronics) , pion , momentum (technical analysis) , zero (linguistics) , domain wall (magnetism) , limit (mathematics) , domain (mathematical analysis) , nuclear physics , statistics , quantum mechanics , mathematical analysis , mathematics , magnetic field , magnetization , linguistics , philosophy , finance , economics
We present the latest results from the UKQCD/RBC collaborations for the K(sub)l3 form factor from simulations with 2 + 1 flavours of dynamical domain wall quarks. Simulations are performed on lattices with two different volumes and four values of the light quark mass, allowing for an extrapolation to the chiral limit. The analysis includes a thorough investigation into the sources of systematic error in our fits. After interpolating to zero momentum transfer, we obtain f₊(0) = 0.964(5) (or Δf = -0.013(5)) which, when combined with the latest experimental results for K(sub)l3 decays, leads to |V(sub)us| = 0.2249(14).P A Boyle, J M Flynn, A Jüttner, R D Kenway, C T Sachrajda, S Sasaki, A Soni, R J Tweedie and J M Zanott