Probing leptogenesis

RIUS, N.; MOLINARO, E.; HARZ, J.; FONG, C. S.; ZAMORA-SAA, J.; CVETIC, G.; NARDI, E.; RACKER, J.; HERNÁNDEZ, P.; KIM, C. S.; GARBRECHT, B.; HAMBYE, T.; DEV, P. S. B.; DREWES, M.; CHUN, E. J.

INTERNATIONAL JOURNAL OF MODERN PHYSICS A

WORLD SCIENTIFIC PUBL CO PTE LTD

Año: 2018 vol. 33

0217-751X

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 doublebeta decay.as well as model independently when measuringRead More: https://www.worldscientific.com/doi/abs/10.1142/S0217751X18420058as well as model independently when measuringRead More: https://www.worldscientific.com/doi/abs/10.1142/S0217751X18420058The 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 heavyRead More: https://www.worldscientific.com/doi/abs/10.1142/S0217751X18420058The 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 WRRead More: https://www.worldscientific.com/doi/abs/10.1142/S0217751X18420058