Or, precisely, during his first four years, AMS has recorded more than 60 billion cosmic ray events

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Like the Hubble Space Telescope, the cosmic ray detector AMS-02 observations made outside the atmosphere, which disorder studied cosmic signals. After the results of positrons, antiprotons those on just been revealed. The precise origin of antimatter in the Milky Way continues to make puzzled astrophysicists.
AMS-02 (in front of solar panels, top) is installed on the International Space Station (ISS). It hunts for dark matter for nearly four years and is expected to do so for several years. NASA
There are a few weeks, the Symmetry magazine, periodical available online and produced ftb jointly by members of Fermilab and SLAC (the two largest laboratories in high-energy physics in the US), reported very surprising results ftb obtained AMS (Alpha Magnetic Spectrometer). It's actually AMS-02, the Hubble cosmic rays is on board the ISS.
Recall that a key goal of this experiment is to indirectly detect the presence of dark matter in the Milky Way. It has indeed never been observed on Earth in colliders or sensors buried as Cogent. Some models predict exotic particles of dark matter can annihilate or disintegrate giving positrons and antiprotons. These particles ftb of antimatter can be produced using more traditional sources such as pulsars. ftb But anomalies in the flow of these particles can betray their origin. ftb Surprising results have already been obtained with positron but without being able to draw definitive ftb conclusions. ftb So we looked forward to the results of studies of antiprotons. Article Symmetry reveals precisely these results.
John Ellis is a great theoretician of particle physics whose opinion is particularly authoritative ftb when it comes to look for evidence of new physics ftb such as supersymmetry (the latter naturally also predicts the existence of dark matter particles). But in the article of Symmetry, the theorist at CERN does not hesitate to speak of the results by the flow of antiprotons measured by AMS in these words: "These new results are very interesting. They are far more accurate than previous data and will really help us define our production models protons and antiprotons in the cosmos. " An article published on arXiv is also in line with the comments of Ellis.
From top to bottom, left to right: the neutralino pairs (X 0 in the diagram) are supersymmetric particles of dark matter which, by annihilating, can give quark-antiquark pairs (letters q in the diagram ) resulting in the formation of hadrons and positrons in the galaxy. The neutralino pairs (X 0) can also lead to annihilation by two gamma photons (γ) as shown on the bottom left. INFN AMS 60 billion events ftb detected for 4 years
What does AMS found? Mike Capell MIT physicist revealed using several comments in the article by Symmetry. "We ftb really dig the head," says the researcher, "we can say that we see by dark matter but the results observed can not be explained by standard theories concerning the origin of cosmic rays and their spreads down to us in the Milky Way. All we can say now is that our results lead us into confusion. " Mike Capell said that "conventional ftb models ftb predict that high energy, the amount of antimatter in cosmic rays must decrease faster than that of the material. But because dark matter can be its own antiparticle, ftb when two such particles come into collision, they are as likely ftb to produce a particle of matter than ordinary antiparticle, so we should see an excess of these antiparticles ".
Or, precisely, during his first four years, AMS has recorded more than 60 billion cosmic ray events (electrons, positrons, protons, antiprotons and nuclei of helium, lithium, boron, carbon, oxygen ...) at energies up to several TeV and the data collected now allow that the report of the antiproton flux over that of protons does not decrease over a wide energy range but remains constant for the moment, ftb or shortly from it.
Similar measurements were obtained with the positrons and electrons but could be explained by a population of pulsars closest to the Sun in the Milky Way or modifying the effect of supernova remnants on the propagation ftb of cosmic rays. According Capell