The unusual multiplet structures associated with the light spin zero mesons have recently attracted a good deal of theoretical attention. Here we discuss some aspects associated with the possibility of getting new experimental information on this topic from semi-leptonic decays of heavy charged mesons into an isosinglet scalar or pseudoscalar plus leptons.
@article{arxiv.1108.3581,
title = {Semi-leptonic $D_s^+$(1968) decays as a scalar meson probe},
author = {Amir H. Fariborz and Renata Jora and Joseph Schechter and M. Naeem Shahid},
journal= {arXiv preprint arXiv:1108.3581},
year = {2015}
}