Galactic anti-nuclei travelers could help illuminate dark matter
Scientists have used data from CERN's Large Hadron Collider to show how antimatter can travel long distances through the Milky Way, a result they hope could uncover the secrets of dark matter, the major cosmological mystery.
Led by Professor Laura Fabbietti of the Technical University of Munich, the team fed data relating to the behavior of antihelium nuclei produced at the LHC into a series of computer models to show the antimatter counterpart of a light atomic nucleus can travel a long distance in the Milky Way without being absorbed.
According to observations of the gravitational effects in the Milky Way, estimates suggest approximately 85 percent of the galaxy is made up of a substance which is not visible in light or radio wave detectors – hence dark matter. Scientists have so far found it impossible to directly prove the existence of the material, something of a stumbling block in the quest to achieve a complete explanation of the cosmos.
Using data from A Large Ion Collider Experiment , a project at the LHC, the researchers were able to uncover key features of the behavior of anti-nuclei, which could help understand when they have resulted from interaction with dark matter. Antihelium-3 nuclei were produced in particle collisions then interacted with matter in the ALICE detector causing them to disappear. The resulting data was entered into a publicly available computer program called GALPROP, which simulates the propagation of cosmic particles, including antinuclei, in the galaxy.
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