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K(l3) form factor with N(f) = 2+1 dynamical domain wall fermions

K(l3) form factor with N(f) = 2+1 dynamical domain wall fermions
K(l3) form factor with N(f) = 2+1 dynamical domain wall fermions
We present the latest results from the UKQCD/RBC collaborations for the Kl3 form factor from simulations with 2+1 avours 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 ts. After interpolating to zero momentum transfer, we obtain f+(0) = 0:964(5) (or Df = -0.013(5)) which, when combined with the latest experimental results for Kl3 decays, leads to |Vus| = 0.2249(14).
380
Scuola Internaziole Superiore di Studi Avanzati
Boyle, P.A.
deafc6c3-3d18-4199-84f5-6f20cd03e311
Kenway, R.D.
1c60cf01-7151-491f-9ab4-18cebc6da3ea
Tweedie, R.J.
c6bfd9bb-6c20-4ce7-aac1-48f6c3cf2f08
Zanotti, J.M.
3683c637-7418-47b0-bb9d-2b704d28bd2d
Bali, Gunnar
Braun, Vladimir
Gattringer, Christof
Göckeler, Meinulf
Schäfer, Andreas
Weisz, Peter
Wettig, Tilo
Boyle, P.A.
deafc6c3-3d18-4199-84f5-6f20cd03e311
Kenway, R.D.
1c60cf01-7151-491f-9ab4-18cebc6da3ea
Tweedie, R.J.
c6bfd9bb-6c20-4ce7-aac1-48f6c3cf2f08
Zanotti, J.M.
3683c637-7418-47b0-bb9d-2b704d28bd2d
Bali, Gunnar
Braun, Vladimir
Gattringer, Christof
Göckeler, Meinulf
Schäfer, Andreas
Weisz, Peter
Wettig, Tilo

Boyle, P.A., Kenway, R.D., Tweedie, R.J. and Zanotti, J.M. (2007) K(l3) form factor with N(f) = 2+1 dynamical domain wall fermions. Bali, Gunnar, Braun, Vladimir, Gattringer, Christof, Göckeler, Meinulf, Schäfer, Andreas, Weisz, Peter and Wettig, Tilo (eds.) In Proceedings of Lattice 2007, The XXV International Symposium on Lattice Field Theory. Scuola Internaziole Superiore di Studi Avanzati. 7 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

We present the latest results from the UKQCD/RBC collaborations for the Kl3 form factor from simulations with 2+1 avours 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 ts. After interpolating to zero momentum transfer, we obtain f+(0) = 0:964(5) (or Df = -0.013(5)) which, when combined with the latest experimental results for Kl3 decays, leads to |Vus| = 0.2249(14).

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More information

Published date: 2007
Venue - Dates: Lattice 2007, the XXV International Symposium on Lattice Field Theory, Regensburg, Germany, 2007-07-30 - 2007-08-04

Identifiers

Local EPrints ID: 57118
URI: http://eprints.soton.ac.uk/id/eprint/57118
PURE UUID: 31bc2afe-5447-44da-9f94-5cc800334f0e

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Date deposited: 20 Aug 2008
Last modified: 06 Mar 2024 17:44

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Contributors

Author: P.A. Boyle
Author: R.D. Kenway
Author: R.J. Tweedie
Author: J.M. Zanotti
Editor: Gunnar Bali
Editor: Vladimir Braun
Editor: Christof Gattringer
Editor: Meinulf Göckeler
Editor: Andreas Schäfer
Editor: Peter Weisz
Editor: Tilo Wettig

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