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 - IN2P3 - Institut national de physique nucléaire et de physique des particules
Article Dans Une Revue Physical Review Letters Année : 2014

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

M. Aguilar
  • Fonction : Auteur
S. Caroff
A. Fiasson
C. Goy

Résumé

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).

Dates et versions

in2p3-01088104 , version 1 (27-11-2014)

Identifiants

Citer

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, 2014, 113, pp.221102. ⟨10.1103/PhysRevLett.113.221102⟩. ⟨in2p3-01088104⟩
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