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arXiv · astro-ph/0504361

Search for Cosmic-Ray Antideuterons

H. Fuke·T. Maeno·K. Abe·S. Haino·Y. Makida·S. Matsuda·H. Matsumoto·J. W. Mitchell·A. A. Moiseev·J. Nishimura·M. Nozaki·S. Orito·J. F. Ormes·M. Sasaki·E. S. Seo·Y. Shikaze·R. E. Streitmatter·J. Suzuki·K. Tanaka·K. Tanizaki·T. Yamagami·A. Yamamoto·Y. Yamamoto·K. Yamato·T. Yoshida·K. Yoshimura
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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 1.9E-4 (m^2 s 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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H. Fuke, T. Maeno, K. Abe, S. Haino, Y. Makida, S. Matsuda, H. Matsumoto, J. W. Mitchell, A. A. Moiseev, J. Nishimura, M. Nozaki, S. Orito, J. F. Ormes, M. Sasaki, E. S. Seo, Y. Shikaze, R. E. Streitmatter, J. Suzuki, K. Tanaka, K. Tanizaki, T. Yamagami, A. Yamamoto, Y. Yamamoto, K. Yamato, T. Yoshida, K. Yoshimura. 2005-07-06. Search for Cosmic-Ray Antideuterons. https://doi.org/10.1103/physrevlett.95.081101

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