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Search for cosmic-ray antideuterons |
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| Authors: | Fuke H Maeno T Abe K Haino S Makida Y Matsuda S Matsumoto H Mitchell J W Moiseev A A Nishimura J Nozaki M Orito S Ormes J F Sasaki M Seo E S Shikaze Y Streitmatter R E Suzuki J Tanaka K Tanizaki K Yamagami T Yamamoto A Yamamoto Y Yamato K Yoshida T Yoshimura K |
| Institution: | Institute of Space and Astronautical Science (ISAS/JAXA), Sagamihara, Kanagawa 229-8510, Japan. fuke@balloon.isas.jaxa.jp |
| Abstract: | We performed a search for cosmic-ray antideuterons using data collected during four BESS balloon flights from 1997 to 2000. No candidate was found. We derived, for the first time, an upper limit of 1.9 x 10(-4) (m2s sr GeV/nucleon)(-1) for the differential flux of cosmic-ray antideuterons, at the 95% confidence level, between 0.17 and 1.15 GeV/nucleon at the top of the atmosphere. |
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