Measurement of the Cosmic-Ray Antiproton Spectrum at Solar Minimum with a Long-Duration Balloon Flight over Antarctica

被引：89

作者：

Abe, K. ^{[2
]}

Fuke, H. ^{[3
]}

Haino, S. ^{[4
]}

Hams, T. ^{[1
]}

Hasegawa, M. ^{[4
]}

Horikoshi, A. ^{[4
]}

Kim, K. C. ^{[5
]}

Kusumoto, A. ^{[2
]}

Lee, M. H. ^{[5
]}

Makida, Y. ^{[4
]}

Matsuda, S. ^{[4
]}

Matsukawa, Y. ^{[2
]}

Mitchell, J. W. ^{[1
]}

Nishimura, J. ^{[6
]}

Nozaki, M. ^{[4
]}

Orito, R. ^{[2
]}

Ormes, J. F. ^{[7
]}

Sakai, K. ^{[1
,6
]}

Sasaki, M. ^{[1
]}

Seo, E. S. ^{[5
]}

Shinoda, R. ^{[6
]}

Streitmatter, R. E. ^{[1
]}

Suzuki, J. ^{[4
]}

Tanaka, K. ^{[4
]}

Thakur, N. ^{[7
]}

Yamagami, T. ^{[3
]}

Yamamoto, A. ^{[4
,6
]}

Yoshida, T. ^{[3
]}

Yoshimura, K. ^{[4
]}

机构：

[1] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[2] Kobe Univ, Kobe, Hyogo 6578501, Japan

[3] Japan Aerosp Explorat Agcy ISAS JAXA, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan

[4] High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan

[5] Univ Maryland, IPST, College Pk, MD 20742 USA

[6] Univ Tokyo, Bunkyo Ku, Tokyo 1130033, Japan

[7] Univ Denver, Denver, CO 80208 USA

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 05期

关键词：

BESS-POLAR EXPERIMENT; BLACK-HOLES; SPECTROMETER; PROGRESS; SEARCH; MATTER; FLUX;

D O I：

10.1103/PhysRevLett.108.051102

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The energy spectrum of cosmic-ray antiprotons ((p) over bar 's) from 0.17 to 3.5 GeV has been measured using 7886 (p) over bar 's detected by BESS-Polar II during a long-duration flight over Antarctica near solar minimum in December 2007 and January 2008. This shows good consistency with secondary (p) over bar calculations. Cosmologically primary (p) over bar 's have been investigated by comparing measured and calculated (p) over bar spectra. BESS-Polar II data show no evidence of primary (p) over bar 's from the evaporation of primordial black holes.

引用

页数：5

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