AMS Antimatter Search Results

Details AMS Antimatter Search Results AMS Antimatter Search Results

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001icrc....5.1703c&link_type=abstract

Proceedings of the 27th International Cosmic Ray Conference. 07-15 August, 2001. Hamburg, Germany. Under the auspices of the Int

Physics

1

Scientific paper

A search for cosmic antinuclei by the Alpha Magnetic Spectrometer (AMS) is presented. The detector was flown on board space shuttle Discovery in June 1998 for 10 days on a 51.7° orbit at altitudes ˜ 350 km. Nuclei are identified by multiple energy loss and time-of-flight measurements and their rigidity is obtained by the bending inside the permanent magnet. 2.86 × 106 helium and 1.65 × 105 heavy nuclei have been precisely measured in a rigidity range 1 < R < 140 GV, while no antinucleus at any rigidity were detected. Integrated upper limits on the flux ratio Z/Z are given which are independent on the incident spectrum.

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