Search for cosmic-ray antideuterons.

  title={Search for cosmic-ray antideuterons.},
  author={H Fuke and Tadashi Maeno and Ke. Abe and Sadakazu Haino and Yasuhiro Makida and Shinya Matsuda and Hiroshi Matsumoto and J. W. Mitchell and Alexander A Moiseev and Jun. Nishimura and Mitsuaki Nozaki and Shūji Orito and Jonathan F. Ormes and Miharu Sasaki and E-S. Seo and Yoshiaki Shikaze and Robert E. Streitmatter and Jun-ichi Suzuki and K. H. Tanaka and K. Tanizaki and Takamasa Yamagami and Akira Yamamoto and Y. Yamamoto and K. Yamato and Takashi Yoshida and Koji Yoshimura},
  journal={Physical review letters},
  volume={95 8},
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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