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Observation of eta '(c) production in gamma gamma fusion at CLEO
| dc.contributor.author | Besson, David Zeke | |
| dc.date.accessioned | 2007-04-11T21:56:08Z | |
| dc.date.available | 2007-04-11T21:56:08Z | |
| dc.date.issued | 2004-04 | |
| dc.identifier.citation | Asner, DM, Dytman, SA, et al. Observation of eta '(c) production in gamma gamma fusion at CLEO. AMERICAN PHYSICAL SOC. April 2004. 92(14) | |
| dc.identifier.uri | http://hdl.handle.net/1808/1367 | |
| dc.description.abstract | We report on the observation of the eta(c)'(2(1)S(0)), the radial excitation of the eta(c)(1(1)S(0)) ground state of charmonium, in the two-photon fusion reaction gammagamma --> eta(c)' --> (KsK+/-)-K-0 pi(-/+) in 13.6 fb(-1) of CLEO II/ILV data and 13.1 fb(-1) of CLEO III data. We obtain M(eta(c)') = 3642.9 +/- 3.1 (stat) +/- 1.5(syst) MeV and M(eta(c)) = 2981.8 +/- 1.3(stat) +/- 1.5(syst) MeV. The corresponding values of hyperfine splittings between S-1(0) and S-3(1) states are DeltaM(hf)(1S) = 115.1 +/- 2.0 MeV and DeltaM(hf)(2S) = 43.1 +/- 3.4 MeV. Assuming that the eta(c) and eta(c)' have equal branching fractions to K(s)Kpi, we obtain Gamma(gammagamma)(eta(c)') = 1.3 +/- 0.6 keV. | |
| dc.language.iso | en_US | |
| dc.publisher | AMERICAN PHYSICAL SOC | |
| dc.relation.isversionof | http://publish.aps.org/ | |
| dc.title | Observation of eta '(c) production in gamma gamma fusion at CLEO | |
| dc.type | Article | |
| dc.rights.accessrights | openAccess |
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