Measurements of the Mass, Total Width, and Two-Photon Partial Width of theηcMeson
نویسندگان
چکیده
منابع مشابه
0 Measurements of the Mass , Total Width and Two - photon Partial Width of the η c Meson
Using 13.4 fb of data collected with the CLEO detector at the Cornell Electron Storage Ring, we have observed 300 events for the two-photon production of ground-state pseudo-scalar charmonium in the decay ηc → K 0 SK π. We have measured the ηc mass to be (2980.4 ± 2.3 (stat) ± 0.6 (sys)) MeV and its full width as (27.0 ± 5.8 (stat) ± 1.4 (sys)) MeV. We have determined the two-photon partial wid...
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Using 13.4 fb of data collected with the CLEO detector at the Cornell Electron Storage Ring, we have observed 300 events for the two-photon production of ground-state pseudo-scalar charmonium in the decay ηc → K SK π. We have measured the ηc mass to be (2980.4 ± 2.3 (stat) ± 0.6 (sys)) MeV and its full width as (27.0 ± 5.8 (stat) ± 1.4 (sys)) MeV. We have determined the two-photon partial width...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2000
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.85.3095