The Charged Cosmic Rays Measured by AMS on the International Space Station

The Alpha Magnetic Spectrometer, AMS, is successfully operating on the International Space Station for more than 6 years and has collected over 100 billion cosmic rays. We present the new physics results from AMS on the precision measurements of elementary particles and nuclei in the cosmic rays. Surprisingly, the spectra of both the primary cosmic rays (including proton, helium, carbon, and oxygen) and the secondary cosmic rays (including lithium, beryllium, and boron) all progressively harden above ∼200 GV. Remarkably, the boron-to-carbon flux ratio is well described by a single power law above 65 GV and consistent with the Kolmogorov turbulence model of magnetized plasma. Unexpectedly, of the four cosmic elementary particles, protons, antiprotons and positrons have nearly identical rigidity (momentum/charge) dependence from ∼60 GV to ∼500 GV, electrons have distinctly different rigidity dependence. Most importantly, AMS continues studies of complex antimatter candidates with stringent detector verification and constantly collection of data.