Resonant Leptogenesis
By A. Pilaftsis, T. Underwood. 2003
478 citations recorded by the source corpus.
We study the scenario of thermal leptogenesis in which the leptonic asymmetries are resonantly enhanced through the mixing of nearly degenerate heavy Majorana neutrinos that have mass differences comparable to their decay widths. Field-theoretic issues arising from the proper subtraction of real intermediate states from the lepton-number-violating scattering processes are addressed in connection with an earlier developed resummation approach to unstable particle mixing in decay amplitudes. The pertinent Boltzmann equations are numerically solved after the enhanced heavy-neutrino self-energy effects on scatterings and the dominant gauge-mediated collision terms are included. We show that resonant leptogenesis can be realized with heavy Majorana neutrinos even as light as ∼ 1 TeV, in complete accordance with the current solar and atmospheric neutrino data. PACS numbers: 11.30.Er, 14.60.St, 98.80.Cq
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/2f937df7e947c59274945f5a4247cd9c7bfeb3ee
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In Nuclear and High Energy Physics
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Citations in the corpus
- Baryogenesis from the weak scale to the grand unification scale (2020, methodology): “24 The condition ω Γi ensures that one does not need to resum neutrino Yukawa interactions.”
- Flavour matters in leptogenesis (2006, background): “8 This result was found in [9, 20], for the case of resonant leptogenesis.”
- Pinch Technique: Theory and Applications (2009, background): “Moreover, Pilaftsis applied the PT to the resonant CP violation a decade ago [245,246], and recently to resonant leptogenesis [247,248].”
- Flavor structures of charged fermions and massive neutrinos (2019, background): “In this case the one-loop self-energy corrections can resonantly enhance the CP-violating asymmetry, leading to a result of the form [220, 221, 222, 223]:”