K(l3) form factor with N(f) = 2+1 dynamical domain wall fermions: A progress report
Boyle, P.A., Flynn, J.M., Juttner, A., Kenway, R.D., Sachrajda, C.T., Sasaki, S., Soni, A., Tweedie, R.J. and Zanotti, J.M. (2007) K(l3) form factor with N(f) = 2+1 dynamical domain wall fermions: A progress report. Journal of Physics: Conference Series, 110, 102012 -[6pp]. (doi:10.1088/1742-6596/110/10/102012).
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We present the latest results from the UKQCD/RBC collaborations for the Kl3 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 Kl3 decays, leads to |Vus| = 0.2249(14).
|Subjects:||Q Science > QB Astronomy
Q Science > QD Chemistry
Q Science > QC Physics
|Divisions:||University Structure - Pre August 2011 > School of Physics and Astronomy
|Date Deposited:||19 Aug 2008|
|Last Modified:||02 Mar 2012 12:31|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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