Measurement of cosmic-ray low-energy antiproton spectrum with the first BESS-Polar Antarctic...

arxiv.org     May 14, 2008          

The BESS-Polar spectrometer had its first successful balloon flight over Antarctica in December 2004. During the 8.5-day long-duration flight, almost 0.9 billion events were recorded and 1,520 antiprotons were detected in the energy range 0.1-4.2 GeV. In this paper, we report the antiproton... [read full story]                    


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