Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1851253 | Physics Letters B | 2008 | 6 Pages |
Abstract
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 Letter, we report the antiproton spectrum obtained, discuss the origin of cosmic-ray antiprotons, and use antiproton data to probe the effect of charge-sign-dependent drift in the solar modulation.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
K. Abe, H. Fuke, S. Haino, T. Hams, A. Itazaki, K.C. Kim, T. Kumazawa, M.H. Lee, Y. Makida, S. Matsuda, K. Matsumoto, J.W. Mitchell, A.A. Moiseev, Z. Myers, J. Nishimura, M. Nozaki, R. Orito, J.F. Ormes, M. Sasaki, E.S. Seo, Y. Shikaze,