Measurement of cosmic-ray low-energy antiproton spectrum with the first BESS-Polar Antarctic flight
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 spectrum...
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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Format: | Text |
Language: | unknown |
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arXiv
2008
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Subjects: | |
Online Access: | https://dx.doi.org/10.48550/arxiv.0805.1754 https://arxiv.org/abs/0805.1754 |
Summary: | 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 spectrum obtained, discuss the origin of cosmic-ray antiprotons, and use antiprotons to probe the effect of charge sign dependent drift in the solar modulation. : 18 pages, 1 table, 5 figures, submitted to Physics Letters B |
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