Measurement of the shadowing of high-energy cosmic rays by the Moon: A search for TeV-energy antiprotons
SourceAstroparticle Physics, 23, 4, (2005), pp. 411-434
Article / Letter to editor
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Experimental High Energy Physics
High Energy Physics
SubjectAstronomy; Experimental High Energy Physics
The shadowing of high-energy cosmic rays by the Moon has been observed with a significance of 9.4 standard deviations with the L3 + C muon spectrometer at CERN. A significant effect of the Earth magnetic field is observed. Since no event deficit on the east side of the Moon has been observed, an upper limit at 90% confidence level on the antiproton to proton ratio of 0.11 is obtained for primary energies around 1 TeV.
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