Observation of new narrow $\mathrm{D_s}$ states

Palano, Antimo; BaBar Collaboration

Report/Contribution to a conference proceedings

PUBDB-2016-03522

Observation of new narrow $\mathrm{D_s}$ states

Palano, A. (Corresponding author) ; BaBar Collaboration (Collaboration author)DESY*

2003

23rd International Conference on Physics in Collision, PIC 2003, Zeuthen, Germany, 26 Jun 2003 - 28 Jun 2003 192-203 (2003)

Report No.: PIC-2003-SAAT01; hep-ex/0309028

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.

Keyword(s): talk: Zeuthen 2003/06/26 ; electron positron: colliding beams ; electron positron: annihilation ; charmed meson: electroproduction ; charmed meson: quantum number ; charmed meson: mass ; D/s0*(2317): hadronic decay ; D/sJ*(2460): search for ; mass spectrum: (D/s+ pi0) ; mass spectrum: (K+ K- pi+) ; mass spectrum: two-photon ; mass spectrum: (D/s+ pi0 photon) ; BaBar ; experimental results ; SLAC PEP Stor ; D/s0*(2317) --> D/s+ pi0 ; D/sJ*(2460) --> D/s(2110) pi0 ; D/s+ --> K+ K- pi+ ; approx. 10.6 GeV-cms