Observation of low energy antiprotons at the 2004 BESS-Polar fiight in Antarctica

S. Matsuda, S. Haino, K. Abe, H. Fuke, T. Hams, K. C. Kim, T. Kumazawa, M. H. Lee, Y. Makida, H. Matsumoto, K. Matsumoto, J. W. Mitchell, A. A. Moiseev, Z. D. Myers, J. Nishimura, M. Nozaki, A. Ogata, M. Oikawa, J. F. Ormes, M. Sasaki & 10 others E. S. Seo, Y. Shikaze, R. E. Streitmatter, J. Suzuki, K. Takeuchi, K. Tanaka, T. Yamagami, A. Yamamoto, T. Yoshida, Koji Yoshimura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A flatter spectrum of low-energy cosmic ray antiprotons below 1 GeV measured by the BESS experiment in the last solar minimum period suggests the existence of possible novel and exotic sources of cosmic-ray antiprotons, such as evaporation of primordial black holes and annihilation of supersymmetric dark matter. In order to investigate these antiproton sources and to search for antimatter in the cosmic radiation, the BESSPolar experiment was carried out with a NASA long duration balloon flight over Antarctica in December 2004. During this 8.5-day flight, the BESS-Polar superconducting spectrometer gathered 900 million cosmic-ray events. The data show that the newly developed particle detector system functioned well enough to observe the low energy antiprotons during the entire flight. Thus we can expect to derive a precise energy spectrum of the low-energy antiprotons with several-times higher statistics than that from the flight of the previous solar minimum period.

Original languageEnglish
Title of host publication29th International Cosmic Ray Conference, ICRC 2005
PublisherTata Institute of Fundamental Research
Pages25-28
Number of pages4
Volume3
Publication statusPublished - 2005
Externally publishedYes
Event29th International Cosmic Ray Conference, ICRC 2005 - Pune, India
Duration: Aug 3 2005Aug 10 2005

Other

Other29th International Cosmic Ray Conference, ICRC 2005
CountryIndia
CityPune
Period8/3/058/10/05

Fingerprint

BESS (satellite)
Antarctic regions
antiprotons
cosmic rays
flight
energy
balloon flight
antimatter
radiation counters
dark matter
energy spectra
statistics
evaporation
spectrometers

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Matsuda, S., Haino, S., Abe, K., Fuke, H., Hams, T., Kim, K. C., ... Yoshimura, K. (2005). Observation of low energy antiprotons at the 2004 BESS-Polar fiight in Antarctica. In 29th International Cosmic Ray Conference, ICRC 2005 (Vol. 3, pp. 25-28). Tata Institute of Fundamental Research.

Observation of low energy antiprotons at the 2004 BESS-Polar fiight in Antarctica. / Matsuda, S.; Haino, S.; Abe, K.; Fuke, H.; Hams, T.; Kim, K. C.; Kumazawa, T.; Lee, M. H.; Makida, Y.; Matsumoto, H.; Matsumoto, K.; Mitchell, J. W.; Moiseev, A. A.; Myers, Z. D.; Nishimura, J.; Nozaki, M.; Ogata, A.; Oikawa, M.; Ormes, J. F.; Sasaki, M.; Seo, E. S.; Shikaze, Y.; Streitmatter, R. E.; Suzuki, J.; Takeuchi, K.; Tanaka, K.; Yamagami, T.; Yamamoto, A.; Yoshida, T.; Yoshimura, Koji.

29th International Cosmic Ray Conference, ICRC 2005. Vol. 3 Tata Institute of Fundamental Research, 2005. p. 25-28.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Matsuda, S, Haino, S, Abe, K, Fuke, H, Hams, T, Kim, KC, Kumazawa, T, Lee, MH, Makida, Y, Matsumoto, H, Matsumoto, K, Mitchell, JW, Moiseev, AA, Myers, ZD, Nishimura, J, Nozaki, M, Ogata, A, Oikawa, M, Ormes, JF, Sasaki, M, Seo, ES, Shikaze, Y, Streitmatter, RE, Suzuki, J, Takeuchi, K, Tanaka, K, Yamagami, T, Yamamoto, A, Yoshida, T & Yoshimura, K 2005, Observation of low energy antiprotons at the 2004 BESS-Polar fiight in Antarctica. in 29th International Cosmic Ray Conference, ICRC 2005. vol. 3, Tata Institute of Fundamental Research, pp. 25-28, 29th International Cosmic Ray Conference, ICRC 2005, Pune, India, 8/3/05.
Matsuda S, Haino S, Abe K, Fuke H, Hams T, Kim KC et al. Observation of low energy antiprotons at the 2004 BESS-Polar fiight in Antarctica. In 29th International Cosmic Ray Conference, ICRC 2005. Vol. 3. Tata Institute of Fundamental Research. 2005. p. 25-28
Matsuda, S. ; Haino, S. ; Abe, K. ; Fuke, H. ; Hams, T. ; Kim, K. C. ; Kumazawa, T. ; Lee, M. H. ; Makida, Y. ; Matsumoto, H. ; Matsumoto, K. ; Mitchell, J. W. ; Moiseev, A. A. ; Myers, Z. D. ; Nishimura, J. ; Nozaki, M. ; Ogata, A. ; Oikawa, M. ; Ormes, J. F. ; Sasaki, M. ; Seo, E. S. ; Shikaze, Y. ; Streitmatter, R. E. ; Suzuki, J. ; Takeuchi, K. ; Tanaka, K. ; Yamagami, T. ; Yamamoto, A. ; Yoshida, T. ; Yoshimura, Koji. / Observation of low energy antiprotons at the 2004 BESS-Polar fiight in Antarctica. 29th International Cosmic Ray Conference, ICRC 2005. Vol. 3 Tata Institute of Fundamental Research, 2005. pp. 25-28
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abstract = "A flatter spectrum of low-energy cosmic ray antiprotons below 1 GeV measured by the BESS experiment in the last solar minimum period suggests the existence of possible novel and exotic sources of cosmic-ray antiprotons, such as evaporation of primordial black holes and annihilation of supersymmetric dark matter. In order to investigate these antiproton sources and to search for antimatter in the cosmic radiation, the BESSPolar experiment was carried out with a NASA long duration balloon flight over Antarctica in December 2004. During this 8.5-day flight, the BESS-Polar superconducting spectrometer gathered 900 million cosmic-ray events. The data show that the newly developed particle detector system functioned well enough to observe the low energy antiprotons during the entire flight. Thus we can expect to derive a precise energy spectrum of the low-energy antiprotons with several-times higher statistics than that from the flight of the previous solar minimum period.",
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AU - Matsuda, S.

AU - Haino, S.

AU - Abe, K.

AU - Fuke, H.

AU - Hams, T.

AU - Kim, K. C.

AU - Kumazawa, T.

AU - Lee, M. H.

AU - Makida, Y.

AU - Matsumoto, H.

AU - Matsumoto, K.

AU - Mitchell, J. W.

AU - Moiseev, A. A.

AU - Myers, Z. D.

AU - Nishimura, J.

AU - Nozaki, M.

AU - Ogata, A.

AU - Oikawa, M.

AU - Ormes, J. F.

AU - Sasaki, M.

AU - Seo, E. S.

AU - Shikaze, Y.

AU - Streitmatter, R. E.

AU - Suzuki, J.

AU - Takeuchi, K.

AU - Tanaka, K.

AU - Yamagami, T.

AU - Yamamoto, A.

AU - Yoshida, T.

AU - Yoshimura, Koji

PY - 2005

Y1 - 2005

N2 - A flatter spectrum of low-energy cosmic ray antiprotons below 1 GeV measured by the BESS experiment in the last solar minimum period suggests the existence of possible novel and exotic sources of cosmic-ray antiprotons, such as evaporation of primordial black holes and annihilation of supersymmetric dark matter. In order to investigate these antiproton sources and to search for antimatter in the cosmic radiation, the BESSPolar experiment was carried out with a NASA long duration balloon flight over Antarctica in December 2004. During this 8.5-day flight, the BESS-Polar superconducting spectrometer gathered 900 million cosmic-ray events. The data show that the newly developed particle detector system functioned well enough to observe the low energy antiprotons during the entire flight. Thus we can expect to derive a precise energy spectrum of the low-energy antiprotons with several-times higher statistics than that from the flight of the previous solar minimum period.

AB - A flatter spectrum of low-energy cosmic ray antiprotons below 1 GeV measured by the BESS experiment in the last solar minimum period suggests the existence of possible novel and exotic sources of cosmic-ray antiprotons, such as evaporation of primordial black holes and annihilation of supersymmetric dark matter. In order to investigate these antiproton sources and to search for antimatter in the cosmic radiation, the BESSPolar experiment was carried out with a NASA long duration balloon flight over Antarctica in December 2004. During this 8.5-day flight, the BESS-Polar superconducting spectrometer gathered 900 million cosmic-ray events. The data show that the newly developed particle detector system functioned well enough to observe the low energy antiprotons during the entire flight. Thus we can expect to derive a precise energy spectrum of the low-energy antiprotons with several-times higher statistics than that from the flight of the previous solar minimum period.

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