Precision Measurement of the (e++e−) Flux in Primary Cosmic Rays from 0.5 GeV to 1 TeV with the Alpha Magnetic Spectrometer on the International Space Station

Abstract : We present a measurement of the cosmic ray (e++e−) flux in the range 0.5 GeV to 1 TeV based on the analysis of 10.6 million (e++e−) events collected by AMS. The statistics and the resolution of AMS provide a precision measurement of the flux. The flux is smooth and reveals new and distinct information. Above 30.2 GeV, the flux can be described by a single power law with a spectral index γ=−3.170±0.008(stat+syst)±0.008(energy scale).
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Article dans une revue
Physical Review Letters, American Physical Society, 2014, 113, pp.221102. 〈10.1103/PhysRevLett.113.221102〉
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http://hal.in2p3.fr/in2p3-01088104
Contributeur : Emmanuelle Vernay <>
Soumis le : jeudi 27 novembre 2014 - 13:49:02
Dernière modification le : lundi 9 avril 2018 - 12:22:06

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M. Aguilar, A. Barrau, V. Bonnivard, L. Derome, A. Ghelfi, et al.. Precision Measurement of the (e++e−) Flux in Primary Cosmic Rays from 0.5 GeV to 1 TeV with the Alpha Magnetic Spectrometer on the International Space Station. Physical Review Letters, American Physical Society, 2014, 113, pp.221102. 〈10.1103/PhysRevLett.113.221102〉. 〈in2p3-01088104〉

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