Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1854504 | Progress in Particle and Nuclear Physics | 2011 | 6 Pages |
Abstract
The total lepton asymmetry l=âflf in our universe is only poorly constrained by theories and experiments. It might be orders of magnitudes larger than the observed baryon asymmetry bâO(10â10), |l|/bâ¤O(109). We found that the dynamics of the cosmic QCD transition changes for large asymmetries. Predictions for asymmetries in a single flavour lf allow even larger values. We find that asymmetries of lfâ¤O(1) in single or two flavours may change the relic abundance of WIMPs. However, large lepton and large individual lepton flavour asymmetries influence significantly the dynamics of the early universe between the electroweak phase transition and the onset of neutrino oscillations.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Maik Stuke,