EVIDENCE FOR THE EXISTENCE OF COSMIC-RAY ANTI-PROTONS

被引:206
作者
GOLDEN, RL [1 ]
HORAN, S [1 ]
MAUGER, BG [1 ]
BADHWAR, GD [1 ]
LACY, JL [1 ]
STEPHENS, SA [1 ]
DANIEL, RR [1 ]
ZIPSE, JE [1 ]
机构
[1] NASA,LYNDON B JOHNSON SPACE CTR,HOUSTON,TX 77058
关键词
D O I
10.1103/PhysRevLett.43.1196
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A search for cosmic-ray antiprotons was recently performed with use of a balloon-borne superconducting-magnet spectrometer. A total of 46 antiproton candidates were observed in the rigidity interval from 5.6 to 12.5 GV/c. Of these events 18.3 are expected to be atmospheric and instrumentation background. The p»p ratio is found to be (5.21.5) ×10-4. This ratio is consistent with secondary production of antiprotons in the interstellar medium. © 1979 The American Physical Society.
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收藏
页码:1196 / 1199
页数:4
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