Search for primordial antiparticles with BESS

A. Yamamoto, K. Abe, H. Fuke, S. Haino, T. Hams, M. Hasegawa, A. Horikoshi, K. C. Kim, A. Kusumoto, M. H. Lee, Y. Makida, S. Matsuda, Y. Matsukawa, J. W. Mitchell, A. Moiseev, J. Nishimura, M. Nozaki, R. Orito, S. Orito, J. F. OrmesK. Sakai, T. Sanuki, M. Sasaki, E. S. Seo, Y. Shikaze, R. Shinoda, R. E. Streitmatter, J. Suzuki, K. Tanaka, N. Thakur, T. Yamagami, T. Yoshida, K. Yoshimura

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


The Balloon-borne Experiment with a Superconducting Spectrometer (BESS) has been carried out to search for primordial antiparticles in cosmic rays. In ten flights from 1993 to 2004, it measured the cosmic-ray antiproton spectrum in the energy range 0.1-4.2 GeV at various solar activity conditions. It also searched for antideuterons and antihelium nuclei, and it made precise measurement of cosmic-ray particle spectra. The BESS program has been extended to long duration balloon (LDB) flights in Antarctica (BESS-Polar) with the goal of achieving unprecedented sensitivity in the search for primordial antiparticles. This report describes recent results from BESS and progress of the BESS-Polar program.

Original languageEnglish
Pages (from-to)442-449
Number of pages8
JournalAdvances in Space Research
Issue number3
Publication statusPublished - 2008 Aug 5
Externally publishedYes


  • Antiparticle
  • Antiproton
  • BESS
  • Cosmic-ray
  • Long duration balloon flight
  • Primordial black hole
  • Superconducting spectrometer

ASJC Scopus subject areas

  • Aerospace Engineering
  • Astronomy and Astrophysics
  • Geophysics
  • Atmospheric Science
  • Space and Planetary Science
  • Earth and Planetary Sciences(all)


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