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Mass and Γ3π0/Γγγ decay branching ratio of the η-meson from the p(γ, η)p reaction

Krusche, B. and Ahrens, J. and Anthony, I. and Anton, G. and Beck, R. and Fuchs, M. and Gabler, A. R. and Harter, F. and Hall, S. J. and Hlavac, S. and Kaiser, K. H. and Kellie, J. D. and Metag, V. and Miller, G. J. and Owens, R. O. and Peise, J. and Robiglandau, M. and Schubert, A. and Simon, R. S. and Stroher, H. and Tries, V.. (1995) Mass and Γ3π0/Γγγ decay branching ratio of the η-meson from the p(γ, η)p reaction. Zeitschrift für Physik. A, Hadrons and nuclei, Vol. 351, H. 3. pp. 237-240.

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Official URL: http://edoc.unibas.ch/dok/A5261994

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Abstract

Neat threshold photoproduction of eta-mesons from the proton has been measured at, the MAMI accelerator with the TAPS spectrometer. The mass of the eta-meson was deduced from the threshold energy for eta-photoproduction. The result of m(eta)=(547.12 +/- 0.06 +/- 0.25) MeV supports the low value of the eta-mass reported from a dp -< He-3(eta) measurement at SATURNE in 1992. The eta-decay branching ratio Gamma(3 pi degrees)/Gamma(gamma gamma) was measured to be (0.832 +/-0.005 +/-0.012).
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Hadronenphysik (Krusche)
UniBasel Contributors:Krusche, Bernd
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Springer
ISSN:0340-2193
Note:Variant title: Mass and Γ(3-pi-0)/Γ (gamma-gamma) decay branching ratio of the eta-meson from the p(gamma, eta)p reaction -- Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Mar 2012 14:26
Deposited On:22 Mar 2012 13:53

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