Published April 11, 2008 | Version v1
Journal article Metadata-only

Kl3 Semileptonic Form Factor from (2+1)-Flavor Lattice QCD

Creators

  • 1. School of Physics, University of Edinburgh, Edinburgh EH9 3JZ (United Kingdom)
  • 2. Institut fuer Kernphysik, Johannes Gutenberg-Universitaet Mainz, D-55099 Mainz (Germany)
  • 3. School of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ (United Kingdom)
  • 4. Department of Physics, University of Tokyo, Tokyo 113-0033 (Japan)
  • 5. RIKEN-BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973 (United States)
  • 6. Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)

Description

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 Δf=-0.013(5)

Additional details

Identifiers

DOI
10.1103/PhysRevLett.100.141601;
arXiv
arXiv:0710.5136v2;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
100
Journal Issue
14
Journal Page Range
p. 141601-141601.4
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
40006552
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
CHIRALITY; FLAVOR MODEL; FORM FACTORS; QUANTUM CHROMODYNAMICS; QUARKS; SEMILEPTONIC DECAY; SIMULATION
Descriptors DEC
COMPOSITE MODELS; DECAY; DIMENSIONLESS NUMBERS; FERMIONS; FIELD THEORIES; MATHEMATICAL MODELS; PARTICLE DECAY; PARTICLE MODELS; PARTICLE PROPERTIES; QUANTUM FIELD THEORY; QUARK MODEL; WEAK PARTICLE DECAY

Optional Information

Notes
(c) 2008 The American Physical Society
Collaborations
RBC+UKQCD Collaborations