کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1767844 | 1020204 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Search for antihelium: Progress with BESS
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم فضا و نجوم
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چکیده انگلیسی
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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advances in Space Research - Volume 42, Issue 3, 5 August 2008, Pages 450–454
Journal: Advances in Space Research - Volume 42, Issue 3, 5 August 2008, Pages 450–454
نویسندگان
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,