Search for Spontaneous Conversion of Muonium to Antimuonium
| Autor: | S. H. Kettell, M. Eckhause, J. R. Kane, Björn Matthias, R. E. Mischke, K. P. Arnold, C. M. Hoffman, H. R. Schaefer, F. Chmely, G. zu Putlitz, H. Orth, J. Markey, Vernon W. Hughes, R. A. Williams, P. P. Guss, K. A. Woodle, Gary E. Hogan, B. Ni, M. D. Cooper, L. E. Piilonen, Y. Kuang, J. Reidy |
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| Rok vydání: | 1987 |
| Předmět: |
Physics
Coupling constant Nuclear and High Energy Physics Antiparticle Muon Muonium General Physics and Astronomy Charge (physics) Elementary particle Electron Weak interaction Secondary electrons Particle identification Nuclear physics Antimatter Atom Higgs boson High Energy Physics::Experiment Atomic physics Intensity (heat transfer) Lepton |
| Zdroj: | Physical Review Letters. 59:2716-2719 |
| ISSN: | 0031-9007 |
| DOI: | 10.1103/physrevlett.59.2716 |
| Popis: | An experimental search for the spontaneous conversion of muonium to antimuonium is described. A 10 MeV/c ${\ensuremath{\mu}}^{+}$ beam of average intensity 3\ifmmode\times\else\texttimes\fi{}${10}^{5}$ ${\mathrm{s}}^{\ensuremath{-}1}$ was used to produce muonium atoms in vacuum by charge capture in a thin foil. The novel method applied here for detection of an antimuonium atom was a triple coincidence of two muonic x-ray photons from the atomic capture of its ${\ensuremath{\mu}}^{\ensuremath{-}}$ by a high-$Z$ target and a secondary electron ejected from the target upon the impact of the antimuonium atom. No antimuonium events were observed and the resulting 90% confidence level upper limit on the coupling constant leading to the conversion, ${G}_{M\overline{M}}$, is $6.9{G}_{F}$, where ${G}_{F}$ is the Fermi coupling constant. |
| Databáze: | OpenAIRE |
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