Speaker
Description
We consider low-energy tests of low-scale leptogenesis based on the type I seesaw scenario with three
right-handed
singlet neutrinos $\nu_{l R}$. In this scenario, successful leptogenesis is possible for quasi-degenerate in mass heavy Majorana neutrinos $N_{1,2,3}$,
$M_{1,2,3}\cong M$, $|M_j - M_i|\ll M$, $i\neq j = 1,2,3$,
heavy Majorana neutrino masses $M \sim (0.05 - 7\times 10^4)$ GeV, and $N_j$ charged current
and neutral current
weak interaction couplings as large as $\mathcal{O}(10^{-2})$.
We derive the constraints on the corresponding
leptogenesis parameter space from the existing data
from low-energy experiments, including the limits from
the experiments on $\mu \rightarrow e \gamma$ decay and
on the rate of $\mu - e$ conversion in gold.
We show also that the planned and upcoming experiments on
charged lepton flavour violation with $\mu^\pm$,
MEG II on the $\mu \rightarrow e\gamma$ decay,
Mu3e on $\mu \rightarrow eee$ decay,
Mu2e and COMET on $\mu - e$ conversion in aluminium
and PRISM/PRIME on $\mu - e$ conversion in titanium,
can probe significant region of the
viable leptogenesis parameter space, and thus
have a potential for a discovery.
| Participation | I plan to attend in person |
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