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Upper limit for the emission of monoenergetic photons in γ(1S)- and γ(2S)-meson decays

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Zeitschrift für Physik C Particles and Fields

Abstract

We report the results of a search for monoenergetic photons in the decay of both theY(1S)- and theY(2S)-meson. Photons converted in the beam tube or the drift chamber inner wall, and photons detected with the barrel shower counters of the ARGUS detector, respectively, have been used in the analysis. No narrow peak is observed in the energy interval 0.5 GeV≦E y≦4.0 GeV.

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Supported by the Bundesministerium für Forschung und Technologie, FRG

Supported by the Natural Sciences and Engineering Research Council, Canada

Supported by the U.S. National Science Foundation and a University of Kansas Faculty Improvement award

Supported in part by the Internationales Büro KfA, Jülich and DESY, Hamburg, FRG

Supported by the Swedish Research Council

Supported by the U.S. Department of Energy, under contract DE-AS09-80ER10690

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ARGUS Collaboration., Albrecht, H., Binder, U. et al. Upper limit for the emission of monoenergetic photons in γ(1S)- and γ(2S)-meson decays. Z. Phys. C - Particles and Fields 29, 167–173 (1985). https://doi.org/10.1007/BF01550813

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  • DOI: https://doi.org/10.1007/BF01550813

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