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Photo of Johan Bijnens

Johan Bijnens

Professor

Photo of Johan Bijnens

K-l3 decays in chiral perturbation theory

Author

  • Johan Bijnens
  • P Talavera

Summary, in English

The process K-l3 is calculated to two-loop order (p(6)) in chiral perturbation theory (ChPT) in the isospin conserved case. We present expressions suitable for use with previous work in two-loop ChPT where the order p(4) parameters (L-i(r)) were determined from experiment. We point out that all the order p(6) parameters (C-i(r)) that appear in the value of f(+)(0) relevant for the determination of V-us can be determined from K-l3 measurements via the slope and the curvature of the scalar form-factor. As by product we update the value of the CKM matrix element V-us. (C) 2003 Elsevier B.V. All rights reserved.

Department/s

  • Theoretical Particle Physics - Undergoing reorganization

Publishing year

2003

Language

English

Pages

341-362

Publication/Series

Nuclear Physics, Section B

Volume

669

Issue

1-2

Document type

Journal article

Publisher

North-Holland

Topic

  • Subatomic Physics

Status

Published

ISBN/ISSN/Other

  • ISSN: 0550-3213