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Dark matter searches with charged cosmic rays: status and perspectives

  • Date March 16, 2016
  • Hour 3 pm
  • Room GSSI Main Lecture Hall
  • Speaker Andrea Vittino (TUM)

ABSTRACT

Dark matter acts as a fundamental ingredient in shaping up the history of the Universe: it makes up more than the 80% of the total matter inside it and perhaps its existence can be traced back to the solution of one of the main problems that affect the Standard Model of particle physics. In the last decades, gravitational evidences in favor of its existence have been collected in a variety of observations, ranging from the cosmological to the astrophysical scale. At the same time, all the non-gravitational attempts for a detection have until now failed in providing indisputable signals. Among the different searching strategies, indirect detection is the technique based on the attempt to detect Standard Model particles that can be generated in dark matter pair annihilation or decay processes and that can reveal their presence in astrophysical or cosmological
observables. In this talk, I will present an overview of the main charged dark matter messengers, namely positrons, antiprotons and light anti-nuclei. I will discuss the main issues related to the search of a dark matter signal in these channels, with a particular focus on the modelling of cosmic rays propagation and on the uncertainties related to the different sources of astrophysical background.

Local referent: Carmelo Evoli