|
|||||
|
|
Dielectron widths of the Gamma(1S,2S,3S) resonances |
|
| Authors: | Rosner J L Adam N E Alexander J P Berkelman K Cassel D G Duboscq J E Ecklund K M Ehrlich R Fields L Galik R S Gibbons L Gray R Gray S W Hartill D L Heltsley B K Hertz D Jones C D Kandaswamy J Kreinick D L Kuznetsov V E Mahlke-Krüger H Meyer T O Onyisi P U E Patterson J R Peterson D Phillips E A Pivarski J Riley D Ryd A Sadoff A J Schwarthoff H Shi X Stroiney S Sun W M Wilksen T Weinberger M Athar S B Avery P Breva-Newell L Patel R Potlia V Stoeck H Yelton J Rubin P Cawlfield C Eisenstein B I Karliner I Kim D Lowrey N Naik P Sedlack C Selen M White E J Wiss J Shepherd M R Besson D Pedlar T K |
| Affiliation: | Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA. |
| Abstract: | We determine the dielectron widths of the Gamma(1S), Gamma(2S), and Gamma(3S) resonances with better than 2% precision by integrating the cross section of e+e- -->Gamma over the e+e- center-of-mass energy. Using e+e- energy scans of the Gamma resonances at the Cornell Electron Storage Ring and measuring Gamma production with the CLEO detector, we find dielectron widths of 1.252+/-0.004(sigma(stat))+/-0.019(sigma(syst)) keV, 0.581+/-0.004+/-0.009 keV, and 0.413+/-0.004+/-0.006 keV for the Gamma(1S), Gamma(2S), and Gamma(3S), respectively. |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ | |