Collider experiments at ultra-relativistic energies, such as those studied by the ALICE experiment at the LHC, allow to study the properties of light antinuclei such as antiprotons, antineutrons, and even antihelium, since the center of mass energy reached in these collisions is sufficient to produce abundant antimatter yields. In this seminar we will discuss how the different production mechanisms of antinuclei can be studied, together with the annihilation cross-section of antinuclei when they meet ordinary nuclei and how this information is essential to study the different sources of antinuclei in our Universe. Indeed, antiprotons have been already been observed in satellite experiments and searches for antineutrons and antihelium are currently ongoing. These antinuclei can be produced by collisions of high energy cosmic rays with the interstellar medium, but might also stem from the annihilation of dark matter! We will see how the studies at accelerators conducted within the ALICE collaboration can help to shed light on the antinuclei detection in our Universe. This is a VIDEO COLLOQUIUM!
Meeting ID: 996 1652 8733
Meeting Password: 733220