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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, E-ISSN 1079-7114, 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.
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:su:diva-80710DOI: 10.1103/PhysRevLett.105.121101ISI: 000281792400004OAI: oai:DiVA.org:su-80710DiVA: diva2:557732
Note

AuthorCount:63;

Available from: 2012-09-28 Created: 2012-09-27 Last updated: 2017-12-07Bibliographically approved

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The Oskar Klein Centre for Cosmo Particle Physics (OKC)
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Physical Review Letters
Astronomy, Astrophysics and Cosmology

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