Measurements of the mass and width of the eta_c meson and of an eta_c(2S) candidate
| dc.creator | Aubert, B. | |
| dc.creator | Collaboration, BABAR | |
| dc.date | 2003-11-18 | |
| dc.date.accessioned | 2026-07-07T12:02:09Z | |
| dc.date.available | 2026-07-07T12:02:09Z | |
| dc.description | The mass and total width of the eta_c meson have been measured in two-photon interactions at the SLAC asymmetric B-Factory with the BABAR detector. With a sample of approximately 2500 reconstructed eta_c -> Ks K pi decays in 88 fb-1 of data, the measured eta_c mass and width are respectively 2982.5 +- 1.1 (stat) +- 0.9 (syst) MeV/c2 and 34.3 +- 2.3 (stat) +- 0.9 (syst) MeV/c2. Using the same decay mode, a second resonance with 112 +- 24 events is observed with a mass of 3630.8 +- 3.4 (stat) +- 1.0 (syst) MeV/c2 and width of 17.0 +- 8.3 (stat) +- 2.5 (syst) MeV/c2. This observation is consistent with expectations for the eta_c(2S) state. | |
| dc.description | 7 pages, 4 figures, submitted to Physical Review Letters | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0311038 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0311038 | |
| dc.identifier | Phys.Rev.Lett.92:142002,2004 | |
| dc.identifier | doi:10.1103/PhysRevLett.92.142002 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/207340 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurements of the mass and width of the eta_c meson and of an eta_c(2S) candidate | |
| dc.type | text |