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Indirect Dark Matter Search: Cosmic Positron Fraction Measurement from 1 to 50 GeV with AMS-01

Henning Gast·Jan Olzem·Stefan Schael
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Abstract

A new measurement of the cosmic ray positron fraction in the energy range of 1-50 GeV is presented. The measurement is based on data taken by the AMS-01 experiment during its 10 day space shuttle flight in June 1998. A proton background suppression in the order of 10^6 is reached by identifying converted bremsstrahlung photons emitted from electrons and positrons.

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Henning Gast, Jan Olzem, Stefan Schael. 2006-05-10. Indirect Dark Matter Search: Cosmic Positron Fraction Measurement from 1 to 50 GeV with AMS-01. https://arxiv.org/abs/astro-ph/0605254

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