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.
Cite
@article{arxiv.hep-ex/0309028,
title = {Observation of New Narrow D_s states},
author = {Antimo Palano},
journal= {arXiv preprint arXiv:hep-ex/0309028},
year = {2010}
}
Comments
Invited talk at the XXIII Physics in Collisions Conference (PIC03), Zeuthen, Germany, June 2003, 12 pages, LaTeX, 9 figures. PSN SAAT01