Skip to main content

Non-Leptonic Three-Body B Decays: Theory and Phenomenology


Tests of the Standard Model (SM) of Particle Physics and the search for New Physics (NP) is a central issue in the European program in High-Energy Physics. Weak decays of heavy hadrons have a unique potential for the extraction of SM parameters, the study of CP violation, and the search for NP. Among these, decays of B mesons into three final hadrons are of huge phenomenological interest. They have been studied experimentally at B factories and at the LHC, and will be a cornerstone in the physics program at Belle-II. However, the theoretical basis for such processes has yet not been developed. Through this project, we will establish the theoretical grounds for the description of non-leptonic three-body B decays, from basic principles to phenomenological applications.

The theoretical description of three-body decays requires a generalization of the theory of non-leptonic two-body B decays, which is by now well established. It involves factorization of perturbative and non-perturbative physics --most conveniently achieved in the framework of Soft-Collinear Effective Theory (SCET)--, the calculation of perturbative kernels, and the study of non-perturbative matrix elements. However, this generalization is non-trivial and requires addressing new issues and facing new challenges, making this a highly innovative project.

We are three the participants in this action:
- Javier Virto (Main Researcher), with a wide experience in the theory and phenomenology of B decays, will be the driving force in this project, while receiving an intensive training from two of the developers of the theory of hadronic B decays.
- Iain Stewart (US partner), developer of Soft-Collinear Effective Theory.
- Martin Beneke (EU Host), developer of the QCD Factorization approach and SCET in position space.

Call for proposal

See other projects for this call


Arcisstrasse 21
80333 Muenchen
Activity type
Higher or Secondary Education Establishments
EU contribution
€ 214 828,20

Partners (1)

United States
Massachusetts Avenue 77
02139 Cambridge
Activity type
Higher or Secondary Education Establishments