Measurement of the shadowing of high-energy cosmic rays by the Moon: A search for TeV-energy antiprotons

L3 Collaboration

doi:10.1016/j.astropartphys.2005.02.002

Scientific article

English

Measurement of the shadowing of high-energy cosmic rays by the Moon: A search for TeV-energy antiprotons

ContributorsL3 Collaboration

CollaboratorsAchard, Pablo; Bourquin, Maurice; Braccini, Saverio; Chamizo Llatas, Maria; Deglon, Patrick; Delmeire, Evelyne; Echenard, Bertrand; Extermann, Pierre; Field, John; Kienzle, Maria-Novella; Natale, Sonia; Pohl, Martin; Straessner, Arno

Published inAstroparticle physics, vol. 24, no. 4, p. 411-434

Publication date2005

Abstract

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.

Affiliation entities

Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire

Citation (ISO format)

L3 Collaboration. Measurement of the shadowing of high-energy cosmic rays by the Moon: A search for TeV-energy antiprotons. In: Astroparticle physics, 2005, vol. 24, n° 4, p. 411–434. doi: 10.1016/j.astropartphys.2005.02.002

Article (Published version)

Identifiers

PID : unige:42202
DOI : 10.1016/j.astropartphys.2005.02.002

Additional URL for this publicationhttp://www.sciencedirect.com/science/article/pii/S0927650505000277

Journal ISSN0927-6505

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Measurement of the shadowing of high-energy cosmic rays by the Moon: A search for TeV-energy antiprotons

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