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PAMELA Results on the Cosmic-Ray Antiproton Flux from 60 MeV to 180 GeV in Kinetic Energy
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2010 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 105, no 12, 121101- p.Article in journal (Refereed) Published
Abstract [en]

The satellite-borne experiment PAMELA has been used to make a new measurement of the cosmic-ray antiproton flux and the antiproton-to-proton flux ratio which extends previously published measurements down to 60 MeV and up to 180 GeV in kinetic energy. During 850 days of data acquisition approximately 1500 antiprotons were observed. The measurements are consistent with purely secondary production of antiprotons in the Galaxy. More precise secondary production models are required for a complete interpretation of the results.

Place, publisher, year, edition, pages
2010. Vol. 105, no 12, 121101- p.
Keyword [en]
Antiproton flux, Proton flux, Satellite-borne experiment, Secondary production, Cosmic rays, Electron energy loss spectroscopy, High energy physics, Kinetic energy
National Category
Subatomic Physics
URN: urn:nbn:se:kth:diva-26654DOI: 10.1103/PhysRevLett.105.121101ISI: 000281792400004OAI: diva2:374231
QC 20101203Available from: 2010-12-03 Created: 2010-11-26 Last updated: 2010-12-03Bibliographically approved

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Carlson, PerGillard, WilliamHofverberg, PetterPearce, MarkRossetto, LauraWu, Juan
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