Baryogenesis from mixed particle decays

1996/11/26 by Laura Covi, L. Covi, E. Roulet +1 · 7 citations
Physics and Astronomy · #Baryogenesis #CP violation #Leptogenesis #Mixing (physics) #Neutrino #Neutrino Physics Research #Order (exchange) #Particle decay #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Scalar (mathematics) #hep-ph

paper · pdf · doi:10.1016/s0370-2693(97)00287-6

published as Phys.Lett. B399 (1997) 113-118 · Latex file, 14 pgs. two figures

arxiv created 1996/11/26 · openalex publication_date 1997/04/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We consider the CP violating asymmetries produced in the decay of heavy particles, studying the effects of heavy particle mixing for arbitrary mass splittings. A considerable enhancement of the asymmetries is achieved when the masses of the mixed states are comparable, and the enhancement is maximal for mass splittings of the order of the widths of the decaying particles. We apply the results to the particular case of heavy scalar neutrino decays relevant for leptogenesis scenarios.

Citations

• International Transmission of Business Cycle: A Markov Switching Self-Organizing State Space Model.
• On anomalous electroweak baryon-number non-conservation in the early universe

Cited by

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• Thermal leptogenesis in a 5D split fermion scenario with bulk neutrinos
• Cosmological phase transition, baryon asymmetry, and dark matterQ-balls
• Flavor symmetryLe−Lμ−Lτ, atmospheric neutrino mixing, andCPviolation in the lepton sector