Particles, Astrophysics, and Nuclear Physics Seminar
Observation of New Narrow Ds States
University of Bari, Italy
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 β decays.
Tuesday, December 2, 2003
Gant Science Complex