B-meson coupling with relativistic heavy quarks
- Started
- 1st August 2009
- Research Team
- Ben Samways, Dirk Broemmel, Patrick Fritzsch
- Investigators
- Jonathan Flynn
Three-point correlation function as computed on the lattice
The B*Bpi coupling is a fundamental parameter in the heavy meson chiral Lagrangian. This is an effective theory of QCD describing the interaction between heavy-light mesons and pions. The effective coupling furthermore constrains the chiral behavior of the B-meson decay constant, bag-parameter and the B->(pi,l,nu) form factor in the soft pion limit. Thus it is crucial in the process of estimating these physical quantities using lattice QCD methods.
Our lattice calculations treat the heavy quark with the so-called Relativistic Heavy Quark (RHQ) action and the light quarks in the Domain Wall Fermion formalism with its improved chiral properties.
The calculations are performed within the UKQCD and RBC collaborations.
Categories
Physical Systems and Engineering simulation: QCD
Algorithms and computational methods: Finite volume, Lattice Field Theory, Monte Carlo, Multi-scale
Visualisation and data handling software: Gnuplot
Software Engineering Tools: Emacs, Git
Programming languages and libraries: C, C++, Chroma, Fortran, GSL, MPI, OpenMP, Python, UKHadron
Computational platforms: Iridis, Linux
Transdisciplinary tags: HPC, Scientific Computing