Recent BaBar results in charmonium and charm spectroscopy

  • Enrico Robutti
PS05 Hadronic Physics

Abstract

Recent results are presented on the study of the η c and η c (2S) resonance parameters and on the observation of two narrow states in the D s spectrum, using the BaBar data set. The η c and η c (2S) are produced in γ γ interactions: a precision measurement of their mass and total width is reported, together with a study supporting the correct assignment of the η c (2S) quantum numbers. Two states \(D^{*+}_{sJ\ 2317}\), \(D_{sJ\ 2457}^+\) are observed in continuum e+e production, decaying to D+ s π0 and D+ s π0γ respectively: their masses are measured and a study on the resonant structure of the D+ sJ (2457) decay is reported. All results are preliminary1.

PACS: PACS-13.66.Bc – PACS-14.40.Gx – PACS-14.40.Lb

Footnotes
  1. 1.

    Except for the of D*+ sJ (2317) mass determination.

Keywords

Quantum Number Recent Result Precision Measurement Resonance Parameter Total Width 

Copyright information

© Springer-Verlag, Società Italiana di Fisica 2004

Authors and Affiliations

  • Enrico Robutti
    • 1
  1. 1.I.N.F.N., Sezione di Genova, Via Dodecaneso 33, 16146 GenovaItaly

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