12-20 July 2017
BEXCO
Asia/Seoul timezone
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Contribution

BEXCO - Room A(101/102)

[CRD065] Precision Measurement of the Fluxes of e^{-}, e^{+}, and (e^{-} + e^{+}) in Primary Cosmic Rays with the AMS on the ISS

Speakers

  • Zhili WENG

Primary authors

  • Zhili WENG (Massachusetts Institute of Technology, United States)

Description

Precision measurements by the Alpha Magnetic Spectrometer on the International Space Station of the primary cosmic-ray electron and positron fluxes in the energy range up to 1000 GeV are presented. The electron flux and the positron flux each require a description beyond a single power-law spectrum. The electron flux and the positron flux are significantly different in their magnitude and energy dependence. Between 20 and 200 GeV the positron spectral index is significantly harder than the electron spectral index. We present the latest positron spectrum to the highest energy, which shows an excellent agreement with the Dark Matter Model with a neutralino mass of ~1 TeV.