Speaker
Patrick Fritzsch
(School of Physics & Astronomy, University of Southampton)
Description
The effective coupling constant $g_{VP\pi}$, describing the coupling of heavy mesons to the pseudoscalar Goldstone bosons (pions), is one of the fundamental parameters of the effective chiral lagrangian for heavy mesons. This coupling encodes non-perturbative QCD effects describing the decay of heavy vector particles into pseudoscalars, $V\to P\pi$.
Beside its direct physical relevance in the D system it is also of phenomenological importance to estimate this coupling non-perturbatively in the B system. I report on the (first) ongoing computation of $g_{VP\pi}$ using the non-perturbatively tuned relativistic heavy quark action (RHQ) to treat the c- and b-quark. We use domain wall light fermions and work on dynamical 2+1 DWF configurations as produced by the RBC/UKQCD collaboration.
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Primary author
Patrick Fritzsch
(School of Physics & Astronomy, University of Southampton)
Co-author
Dr
Oliver Witzel
(BNL)
