Uniting Low-Scale Leptogenesis Mechanisms

Uniting Low-Scale Leptogenesis Mechanisms

In this Letter we demonstrate that what was previously considered as different mechanisms of baryon asymmetry generation involving two right-handed Majorana neutrinos with masses far below the Grand Unified Theory scale-leptogenesis via neutrino oscillations and resonant leptogenesis-are actually un...

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Veröffentlicht in:Physical review letters 2021-09, Vol.127 (11), p.1-111802, Article 111802
Hauptverfasser: Klarić, Juraj, Shaposhnikov, Mikhail, Timiryasov, Inar
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Asymmetry
Baryons
Grand unified theory
Luminous intensity
Neutrinos
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container_title Physical review letters
container_volume 127
creator Klarić, Juraj
Shaposhnikov, Mikhail
Timiryasov, Inar
description In this Letter we demonstrate that what was previously considered as different mechanisms of baryon asymmetry generation involving two right-handed Majorana neutrinos with masses far below the Grand Unified Theory scale-leptogenesis via neutrino oscillations and resonant leptogenesis-are actually united. We show that the observed baryon asymmetry can be generated for all experimentally allowed values of the right-handed neutrino masses above MN ≳ 100 MeV. Leptogenesis is effective in a broad range of the parameters, including mass splitting between two right-handed neutrinos as big as ΔMN/MN ∼ 0.1, as well as mixing angles between the heavy and light neutrinos large enough to be accessible to planned intensity experiments or future colliders.
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subjects Asymmetry
Baryons
Grand unified theory
Luminous intensity
Neutrinos
title Uniting Low-Scale Leptogenesis Mechanisms
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