Matter and antimatter in the universe

By Laurent Canetti, M. Drewes, M. Shaposhnikov. 2012

403 citations recorded by the source corpus.

We review observational evidence for a matter–antimatter asymmetry in the early universe, which leads to the remnant matter density we observe today. We also discuss bounds on the presence of antimatter in the present-day universe, including the possibility of a large lepton asymmetry in the cosmic neutrino background. We briefly review the theoretical framework within which baryogenesis, the dynamical generation of a matter–antimatter asymmetry, can occur. As an example, we discuss a testable minimal particle physics model that simultaneously explains the baryon asymmetry of the universe, neutrino oscillations and dark matter.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/bc43bdd511610a24207faa2de924abbffce37a23

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

In Nuclear and High Energy Physics

Citations in the corpus

Antinuclei in heavy-ion collisions (2018, background): “Overall, within or beyond the framework of the Standard Model, no known mechanism offers an adequate explanation for the imbalance between matter and antimatter in the observed universe, and the absence today of antibaryonic matter left-over from the Big Bang is invariably counted among the “major u”
Dark Matter, Baryogenesis and Neutrino Oscillations from Right Handed Neutrinos (2012, background): “Numerical studies in section 5 show that the observed BAU can be explained even far away from this point, for M ≫ δM(T ) ≫ ΓN (T ).”
A facility to search for hidden particles at the CERN SPS: the SHiP physics case (2015, background): “For the BAU, these were succinctly given by Sakharov [644] long ago, and are refered to as “Sakharov conditions”: 1.”
A White Paper on keV sterile neutrino Dark Matter (2016, background): “Di Bari) The same minimal extension of the SM that can account for neutrino masses and mixing, the (type I) seesaw mechanism [153–156, 377], can also elegantly explain the observed matterantimatter asymmetry of the Universe [150] with leptogenesis [357].”
The Phenomenology of Right Handed Neutrinos (2013, background): “However, the CP violation and deviation from equilibrium are both too small in the SM to explain the observed ηB; see [245] for a detailed account of the Sakharov conditions and baryogenesis in the SM.”