Search for anti-helium in cosmic rays

Scientific article

English

ContributorsAMS Collab.

Published inPhysics letters. B, vol. 461, no. 4, p. 387-396

Publication date1999

Abstract

The Alpha Magnetic Spectrometer (AMS) was flown on the space shuttle Discovery during flight STS-91 in a 51.7° orbit at altitudes between 320 and 390 km. A total of 2.86×10 6 helium nuclei were observed in the rigidity range 1 to 140 GV. No antihelium nuclei were detected at any rigidity. An upper limit on the flux ratio of antihelium to helium of <1.1×10 −6 is obtained.

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Citation (ISO format)

AMS Collab. Search for anti-helium in cosmic rays. In: Physics letters. B, 1999, vol. 461, n° 4, p. 387–396. doi: 10.1016/s0370-2693(99)00874-6

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Article (Published version)

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Journal ISSN0370-2693

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