Johan Bijnens
Professor, Deputy Head of Division
Hard pion chiral perturbation theory for B -> pi and D -> pi formfactors
Author
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 - Has been reorganised
Publishing year
2010
Language
English
Pages
54-66
Publication/Series
Nuclear Physics, Section B
Volume
840
Issue
1-2
Links
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