Scientific article
OA Policy
English

Effective lagrangian for heavy and light mesons. Semileptonic decays

Published inPhysics letters. B, vol. 299, no. 1-2, p. 139-150
Publication date1993
Abstract

We introduce an effective lagrangian including negative and positive parity heavy mesons containing a heavy quark, light pseudoscalars, and light vector resonances, with their allowed interactions, using heavy quark spin-flavour symmetry, chiral symmetry, and the hidden symmetry approach for light vector resonances. On the basis of such a lagrangian, by considering the allowed weak currents and by including the contributions from the nearest unitarity poles we calculate the form factors for semileptonic decays of B and D mesons into light pseudoscalars and light vector resonances. The available data, together with some additional assumptions, allow for a set of predictions in the different semileptonic channels, which can be compared with those following from different approaches. A discussion of non-dominant terms in our approach, which attempts at including a rather complete dynamics, will however have to wait till more abundant data become available.

Citation (ISO format)
CASALBUONI, Roberto et al. Effective lagrangian for heavy and light mesons. Semileptonic decays. In: Physics letters. B, 1993, vol. 299, n° 1-2, p. 139–150. doi: 10.1016/0370-2693(93)90895-O
Main files (1)
Article (Published version)
accessLevelPublic
Identifiers
Journal ISSN0370-2693
510views
188downloads

Technical informations

Creation30/01/2017 10:10:00
First validation30/01/2017 10:10:00
Update time15/03/2023 01:20:11
Status update15/03/2023 01:20:11
Last indexation31/10/2024 06:01:48
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack