PT Journal
AU Chun, EJ
   Cvetic, G
   Dev, PSB
   Drewes, M
   Fong, CS
   Garbrecht, B
   Hambye, T
   Harz, J
   Hernandez, P
   Kim, CS
   Molinaro, E
   Nardi, E
   Racker, J
   Rius, N
   Zamora-Saa, J
TI Probing leptogenesis
SO International Journal of Modern Physics A
JI Int. J. Mod. Phys. A
PY 2018
BP 1842005
EP 99pp
VL 33
IS 5-6
DI 10.1142/S0217751X18420058
LA English
DE Neutrino interactions; nonstandard-model neutrinos; right-handed neutrinos; extensions of electroweak gauge sector; supersymmetric models
AB The focus of this paper lies on the possible experimental tests of leptogenesis scenarios. We consider both leptogenesis generated from oscillations, as well as leptogenesis from out-of-equilibrium decays. As the Akhmedov-Rubakov-Smirnov (ARS) mechanism allows for heavy neutrinos in the GeV range, this opens up a plethora of possible experimental tests, e.g. at neutrino oscillation experiments, neutrinoless double beta decay, and direct searches for neutral heavy leptons at future facilities. In contrast, testing leptogenesis from out-of-equilibrium decays is a quite difficult task. We comment on the necessary conditions for having successful leptogenesis at the TeV-scale. We further discuss possible realizations and their model specific testability in extended seesaw models, models with extended gauge sectors, and supersymmetric leptogenesis. Not being able to test high-scale leptogenesis directly, we present a way to falsify such scenarios by focusing on their washout processes. This is discussed specifically for the left-right symmetric model and the observation of a heavy W-R, as well as model independently when measuring Delta L = 2 washout processes at the LHC or neutrinoless double beta decay.
ER