2004/12/31 by Svjetlana Fajfer, S. Fajfer, Jernej F. Kamenik +1
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevd.71.014020
published as Phys.Rev.D71:014020,2005 · 9 pages, 4 figures; minor corrections, added some discussion, version as published
openalex publication_date 2005/01/19 · arxiv created 2005/01/25 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Motivated by recent experimental results we reconsider semileptonic D\ensuremath→P\ensuremathℓ\ensuremathν_\ensuremathℓ decays within a model which combines heavy quark symmetry and properties of the chiral Lagrangian. We include excited charm meson states, some of them recently observed, in our Lagrangian and determine their impact on the charm meson semileptonic form factors. We find that the inclusion of excited charm meson states in the model leads to a rather good agreement with the experimental results on the q2 shape of the F+(q2) form factor. We also calculate branching ratios for all D\ensuremath→P\ensuremathℓ\ensuremathν_\ensuremathℓ decays.