SEMINAR       Thursday, 30th October 2003 - h. 15:00  Auditorium B. Touschek     A. Palano  (Bari University) Observation of New Narrow Ds states         Abstract The BaBar experiment has discovered a new narrow state, Ds(2317), near 2.32 GeV in the inclusive Ds pi0 invariant mass distribution from e+e- annihilation data at energies near 10.6 GeV. The same experiment has also shown evidence for structure in the 2.46 GeV region in the Ds pi0 gamma mass spectrum. These discoveries have triggered several experiments in a search for new states coupled to the Ds meson which confirmed the existence of Ds(2317) together with Ds(2458) both in inclusive e+ e- annihilation and in B decays. These two new states are difficult to explain in terms of potential models.