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 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
Externally published	Yes
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/Territory	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

Cite this

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

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

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

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.",

keywords = "Antiproton, BESS-polar II",

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",

year = "2011",

doi = "10.7529/ICRC2011/V06/1280",

language = "English",

pages = "111--114",

note = "32nd International Cosmic Ray Conference, ICRC 2011 ; Conference date: 11-08-2011 Through 18-08-2011",

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TY - CONF

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

UR - http://www.scopus.com/inward/record.url?scp=84899513161&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84899513161&partnerID=8YFLogxK

U2 - 10.7529/ICRC2011/V06/1280

DO - 10.7529/ICRC2011/V06/1280

M3 - Paper

AN - SCOPUS:84899513161

SP - 111

EP - 114

T2 - 32nd International Cosmic Ray Conference, ICRC 2011

Y2 - 11 August 2011 through 18 August 2011

ER -

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

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Keywords

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