Description
Leptogenesis.
Chair: Dhruv Pasari
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Henry McKenna (The University of Liverpool)18/12/2025, 09:10
We investigate a minimal extension of the Leptogenesis framework that simultaneously explains the observed baryon asymmetry and dark matter (DM) abundance through the decay of a heavy Majorana neutrino. In this scenario, CP violation arises from complex Yukawa couplings, enabling the generation of asymmetries in both the Standard Model (SM) and DM sectors. We explore two regimes: (i) wash-in,...
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Angus Spalding (University of Southampton)18/12/2025, 09:40
The introduction of heavy right-handed neutrinos (RHNs) explains the smallness of neutrino masses and offers a mechanism for generating the baryon asymmetry of the universe via leptogenesis. While this is usually studied in thermal scenarios, a cosmological history beginning with inflation suggests a more natural alternative: the inflaton itself can decay into RHNs during rehating, this...
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Xubin Hu (University of Southampton)18/12/2025, 10:10
I will discuss SO(10)-inspired leptogenesis, a well known scenario of leptogenesis relying on conditions realised within SO(10) models and also beyond. I will first review results within current approximations and then I will show new results including flavour coupling effects that have not yet been considered so far. I will also confront predictions and constraints from SO(10)-inspired...
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