Measurement of cosmic-ray antiproton spectrum at solar minimum with a long-duration balloon flight in Antarctica

K. Sakai; 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; J. Nishimura; M. Nozaki; R. Orito; J. F. Ormes; M. Sasaki; E. S. Seo; R. Shinoda; R. E. Streitmatter; J. Suzuki; K. Tanaka; N. Thakur; T. Yamagami; A. Yamamoto; T. Yoshida; K. Yoshimura

doi:10.7529/ICRC2011/V06/1280

Measurement of cosmic-ray antiproton spectrum at solar minimum with a long-duration balloon flight in Antarctica

K. Sakai, 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, J. Nishimura, M. Nozaki, R. Orito, J. F. Ormes, M. Sasaki, E. S. SeoR. Shinoda, R. E. Streitmatter, J. Suzuki, K. Tanaka, N. Thakur, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

Research Institute for Interdisciplinary Science

Research output: Contribution to conference › Paper › peer-review

Abstract

The energy spectrum of cosmic-ray antiprotons (p's) has been measured in the range 0.17 to 3.5 GeV, based on 7886 p's collected by the BESS-Polar II instrument during a long duration flight over Antarctica in a Solar minimum period of December 2007 through January 2008. The p spectrum measured by BESS-Polar II shows good consistency with the secondary p calculations. Given this background of secondary p's, cosmologically primary p's have been searched for using the observed p spectrum. BESS-Polar II result shows no evidence of primary p's that originated from the evaporation of PBH.

Original language	English
Pages	111-114
Number of pages	4
DOIs	https://doi.org/10.7529/ICRC2011/V06/1280
Publication status	Published - 2011
Event	32nd International Cosmic Ray Conference, ICRC 2011 - Beijing, China Duration: Aug 11 2011 → Aug 18 2011

Other

Other	32nd International Cosmic Ray Conference, ICRC 2011
Country	China
City	Beijing
Period	8/11/11 → 8/18/11

Keywords

Antiproton
BESS-polar II

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.7529/ICRC2011/V06/1280

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Sakai, K., Abe, K., Fuke, H., Haino, S., Hams, T., Hasegawa, M., Horikoshi, A., Kim, K. C., Kusumoto, A., Lee, M. H., Makida, Y., Matsuda, S., Matsukawa, Y., Mitchell, J. W., Nishimura, J., Nozaki, M., Orito, R., Ormes, J. F., Sasaki, M., ... Yoshimura, K. (2011). Measurement of cosmic-ray antiproton spectrum at solar minimum with a long-duration balloon flight in Antarctica. 111-114. Paper presented at 32nd International Cosmic Ray Conference, ICRC 2011, Beijing, China. https://doi.org/10.7529/ICRC2011/V06/1280

Measurement of cosmic-ray antiproton spectrum at solar minimum with a long-duration balloon flight in Antarctica. / Sakai, K.; Abe, K.; Fuke, H.; Haino, S.; Hams, T.; Hasegawa, M.; Horikoshi, A.; Kim, K. C.; Kusumoto, A.; Lee, M. H.; Makida, Y.; Matsuda, S.; Matsukawa, Y.; Mitchell, J. W.; Nishimura, J.; Nozaki, M.; Orito, R.; Ormes, J. F.; Sasaki, M.; Seo, E. S.; Shinoda, R.; Streitmatter, R. E.; Suzuki, J.; Tanaka, K.; Thakur, N.; Yamagami, T.; Yamamoto, A.; Yoshida, T.; Yoshimura, K.

2011. 111-114 Paper presented at 32nd International Cosmic Ray Conference, ICRC 2011, Beijing, China.

Research output: Contribution to conference › Paper › peer-review

Sakai, K, Abe, K, Fuke, H, Haino, S, Hams, T, Hasegawa, M, Horikoshi, A, Kim, KC, Kusumoto, A, Lee, MH, Makida, Y, Matsuda, S, Matsukawa, Y, Mitchell, JW, Nishimura, J, Nozaki, M, Orito, R, Ormes, JF, Sasaki, M, Seo, ES, Shinoda, R, Streitmatter, RE, Suzuki, J, Tanaka, K, Thakur, N, Yamagami, T, Yamamoto, A, Yoshida, T & Yoshimura, K 2011, 'Measurement of cosmic-ray antiproton spectrum at solar minimum with a long-duration balloon flight in Antarctica', Paper presented at 32nd International Cosmic Ray Conference, ICRC 2011, Beijing, China, 8/11/11 - 8/18/11 pp. 111-114. https://doi.org/10.7529/ICRC2011/V06/1280

Sakai, K. ; Abe, K. ; Fuke, H. ; Haino, S. ; Hams, T. ; Hasegawa, M. ; Horikoshi, A. ; Kim, K. C. ; Kusumoto, A. ; Lee, M. H. ; Makida, Y. ; Matsuda, S. ; Matsukawa, Y. ; Mitchell, J. W. ; Nishimura, J. ; Nozaki, M. ; Orito, R. ; Ormes, J. F. ; Sasaki, M. ; Seo, E. S. ; Shinoda, R. ; Streitmatter, R. E. ; Suzuki, J. ; Tanaka, K. ; Thakur, N. ; Yamagami, T. ; Yamamoto, A. ; Yoshida, T. ; Yoshimura, K. / Measurement of cosmic-ray antiproton spectrum at solar minimum with a long-duration balloon flight in Antarctica. Paper presented at 32nd International Cosmic Ray Conference, ICRC 2011, Beijing, China.4 p.

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abstract = "The energy spectrum of cosmic-ray antiprotons (p's) has been measured in the range 0.17 to 3.5 GeV, based on 7886 p's collected by the BESS-Polar II instrument during a long duration flight over Antarctica in a Solar minimum period of December 2007 through January 2008. The p spectrum measured by BESS-Polar II shows good consistency with the secondary p calculations. Given this background of secondary p's, cosmologically primary p's have been searched for using the observed p spectrum. BESS-Polar II result shows no evidence of primary p's that originated from the evaporation of PBH.",

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

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T1 - Measurement of cosmic-ray antiproton spectrum at solar minimum with a long-duration balloon flight in Antarctica

AU - Sakai, K.

AU - Abe, K.

AU - Fuke, H.

AU - Haino, S.

AU - Hams, T.

AU - Hasegawa, M.

AU - Horikoshi, A.

AU - Kim, K. C.

AU - Kusumoto, A.

AU - Lee, M. H.

AU - Makida, Y.

AU - Matsuda, S.

AU - Matsukawa, Y.

AU - Mitchell, J. W.

AU - Nishimura, J.

AU - Nozaki, M.

AU - Orito, R.

AU - Ormes, J. F.

AU - Sasaki, M.

AU - Seo, E. S.

AU - Shinoda, R.

AU - Streitmatter, R. E.

AU - Suzuki, J.

AU - Tanaka, K.

AU - Thakur, N.

AU - Yamagami, T.

AU - Yamamoto, A.

AU - Yoshida, T.

AU - Yoshimura, K.

PY - 2011

Y1 - 2011

N2 - The energy spectrum of cosmic-ray antiprotons (p's) has been measured in the range 0.17 to 3.5 GeV, based on 7886 p's collected by the BESS-Polar II instrument during a long duration flight over Antarctica in a Solar minimum period of December 2007 through January 2008. The p spectrum measured by BESS-Polar II shows good consistency with the secondary p calculations. Given this background of secondary p's, cosmologically primary p's have been searched for using the observed p spectrum. BESS-Polar II result shows no evidence of primary p's that originated from the evaporation of PBH.

AB - The energy spectrum of cosmic-ray antiprotons (p's) has been measured in the range 0.17 to 3.5 GeV, based on 7886 p's collected by the BESS-Polar II instrument during a long duration flight over Antarctica in a Solar minimum period of December 2007 through January 2008. The p spectrum measured by BESS-Polar II shows good consistency with the secondary p calculations. Given this background of secondary p's, cosmologically primary p's have been searched for using the observed p spectrum. BESS-Polar II result shows no evidence of primary p's that originated from the evaporation of PBH.

KW - Antiproton

KW - BESS-polar II

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T2 - 32nd International Cosmic Ray Conference, ICRC 2011

Y2 - 11 August 2011 through 18 August 2011

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