Observation of New Narrow D_s states

Abstract

The BABAR experiment has discovered a new narrow state, D^*_{sJ}(2317)^+, near 2.32 GeV in the inclusive D_s^+ pi^0 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 D^*_s(2112)^+ pi^0 mass spectrum. These discoveries have triggered several experiments in a search for new states coupled to the D_s^+ meson which confirmed the existence of D^*_{sJ}(2317)^+ together with D_{sJ}(2458)^+ --> D^*_s(2112)^+ pi^0 both in inclusive e^+ e^- annihilation and in B decays. These two new states are difficult to explain in terms of potential models.

arXiv commentInvited talk at the XXIII Physics in Collisions Conference (PIC03), Zeuthen, Germany, June 2003, 12 pages, LaTeX, 9 figures. PSN SAAT01

Cited by in corpus (1)

• Interpretation of D${}_{sJ}^{\ast }$(2317) and D${}_{sJ}$(2460)