Speaker
Description
The existence of the dark matter has been well established since the first observational evidence in 1933 but no dark matter candidate has been seen yet. There are several different ongoing dark matter searches. The indirect dark matter search is looking at the dark matter annihilation and decay products in cosmic rays. The most promising channel in such study is the antimatter cosmic rays as their background consists only of the secondary particles produced in collisions of the cosmic ray matter particles and the interstellar medium. To model the antimatter background one needs both the cosmic ray propagation model and the antimatter production cross sections.
In this talk we show the results of our antiproton cosmic ray study. We constrained the propagation scheme using available proton and helium cosmic ray measurements. We used GALPROP for propagation in the galaxy and HelMod for propagation in the heliosphere. In case of antimatter, only the antiproton cosmic ray measurements are available. We investigated several parametrizations and event generators to obtain the antiproton invariant cross sections. We compared resulting cross sections to the existent collider data and used them for the antiproton production in the galaxy to calculate the antiproton cosmic ray fluxes.
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