Eur Phys J C (2004) 33: s551-s553
https://doi.org/10.1140/epjcd/s2004-03-1787-7

PS05 Hadronic Physics

Recent BaBar results in charmonium and charm spectroscopy

I.N.F.N., Sezione di Genova, Via Dodecaneso 33, 16146 Genova, Italy

Received: 29 October 2003
Accepted: 9 March 2004
Published online: 31 March 2004

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 γγ 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 , are observed in continuum e⁺e^– production, decaying to D⁺_sπ⁰ and D⁺_sπ⁰ γ respectively: their masses are measured and a study on the resonant structure of the D⁺_sJ(2457) decay is reported. All results are preliminary (Except for the of D^*+_sJ(2317) mass determination).

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