| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1767844 | Advances in Space Research | 2008 | 5 Pages |
Abstract
In this paper, we report searches for antihelium in cosmic rays using two recently flown magnetic rigidity spectrometers. BESS-TeV had extended rigidity with an MDR of 1.4 TV and had a flight duration of one day. BESS-Polar was optimized for collecting power. It was flown for 8.5 days and had an MDR of 240 GV. The former flight allows us to explore a previously unexplored rigidity band and the latter flight yields a factor of three improvement in the overall BESS limit. No antihelium candidate was found in the rigidity ranges of 1–500 GV, and 0.6–20 GV, among 7 × 104 events taken with BESS-TeV, and 8 × 106 events taken with BESS-Polar, respectively.
Keywords
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Space and Planetary Science
Authors
M. Sasaki, S. Haino, K. Abe, H. Fuke, T. Hams, K.C. Kim, M.H. Lee, Y. Makida, S. Matsuda, J.W. Mitchell, A.A. Moiseev, J. Nishimura, M. Nozaki, S. Orito, J.F. Ormes, T. Sanuki, E.S. Seo, Y. Shikaze, R.E. Streitmatter, J. Suzuki, K. Tanaka, T. Yamagami,