Leptogenesis as the origin of matter
By W. Buchmuller, R. Peccei, T. Yanagida. 2005
660 citations recorded by the source corpus.
▪ Abstract We explore in some detail the hypothesis that the generation of a primordial lepton-antilepton asymmetry (Leptogenesis) early on in the history of the Universe is the root cause for the origin of matter. After explaining the theoretical conditions for producing a matter-antimatter asymmetry in the Universe we detail how, through sphaleron processes, it is possible to transmute a lepton asymmetry—or, more precisely, a (B – L)-asymmetry—into a baryon asymmetry. Because Leptogenesis depends in detail on properties of the neutrino spectrum, we review briefly existing experimental information on neutrinos as well as the seesaw mechanism, which offers a theoretical understanding of why neutrinos are so light. The bulk of the review is devoted to a discussion of thermal Leptogenesis, and we show that for the neutrino spectrum suggested by oscillation experiments, one obtains the observed value for the baryon to photon density ratio in the Universe, independently of any initial boundary conditions. In ...
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/eccdb8675a263775b1ecff9e5c422dd7b90fd27e
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In Nuclear and High Energy Physics
Citations in the corpus
- Baryogenesis from the weak scale to the grand unification scale (2020, background): “Different aspects of the theoretical work on baryogenesis over 50 years have previously been described in a number 3 of comprehensive reviews; see Kolb and Turner (1990), Rubakov and Shaposhnikov (1996), Dine and Kusenko (2003), and Buchmuller, Peccei, and Yanagida (2005b).”
- The Phenomenology of Right Handed Neutrinos (2013, background): “(56)Our notation is more close to that in [387].”
- Flavor structures of charged fermions and massive neutrinos (2019, background): “There are actually a number of baryogenesis mechanisms on the market, among which the typical ones include electroweak baryogenesis [140, 141, 142, 143], GUT baryogenesis [211], the AffleckDine mechanism [145, 213] and baryogenesis via leptogenesis [144].”
- The Neutron and Its Role in Cosmology and Particle Physics (2011, background): “This source of nonequilibrium is particularly effective at the very early times soon after inflation, for leptogenesis, for example, with a slow out of equilibrium decay of Majorana neutrinos (Buchmüller et al., 2005).”