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Photo of Johan Bijnens

Johan Bijnens

Professor

Photo of Johan Bijnens

Hard pion chiral perturbation theory for B -> pi and D -> pi formfactors

Author

  • Johan Bijnens
  • Ilaria Jemos

Summary, in English

We use one-loop Heavy Meson Chiral Perturbation Theory (HMChPT) as well as a relativistic formulation to calculate the chiral logarithms m(pi)(2) log (m(pi)(2)/mu(2)) contributing to the formfactors of the semileptonic B -> pi decays at momentum transfer q(2) away from q(max)(2) = (m(B) - m(pi))(2). We give arguments why this chiral behaviour is reliable even in the energy regime with hard or fast pions. These results can be used to extrapolate the formfactors calculated on the lattice to lower light meson masses. (C) 2010 Elsevier B.V. All rights reserved.

Department/s

  • Theoretical Particle Physics

Publishing year

2010

Language

English

Pages

54-66

Publication/Series

Nuclear Physics, Section B

Volume

840

Issue

1-2

Document type

Journal article

Publisher

North-Holland

Topic

  • Subatomic Physics

Keywords

  • B and D meson semileptonic decays
  • Chiral perturbation theory

Status

Published

ISBN/ISSN/Other

  • ISSN: 0550-3213