Radiative generation ofθ13with the seesaw threshold effect

2004/04/30 by Jianwei Mei, Jian-wei Mei, Zhi‐zhong Xing +1
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Baryon asymmetry #CP violation #Electroweak interaction #Electroweak scale #Leptogenesis #Lepton #Minimal Supersymmetric Standard Model #Mixing (physics) #Neutrino #Neutrino Physics Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Quantum mechanics #Standard Model (mathematical formulation) #Supersymmetry #hep-ex #hep-ph

paper · pdf · doi:10.1103/physrevd.70.053002

published as Phys.Rev. D70 (2004) 053002 · 13 pages, 1 table, 3 figures; text improved, more result added to the table, matching the version accepted for publication in PRD

arxiv created 2004/07/15 · openalex publication_date 2004/09/07 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We examine whether an appreciable value of the lepton flavor mixing angle \ensuremathθ₁₃ at the electroweak scale \ensuremathΛ_EW can be radiatively generated from \ensuremathθ₁₃=0\ifmmode^∘\else\textdegree\fi at the grand unified theory (GUT) scale \ensuremathΛ_GUT. It is found that the renormalization-group running and seesaw threshold effects may lead to \ensuremathθ₁₃\ensuremath∼5\ifmmode^∘\else\textdegree\fi at low energies for two simple large-maximal mixing patterns of the Maki-Nakagawa-Sakata matrix in the minimal supersymmetric standard model. If \ensuremathθ₁₂ is sufficiently large at \ensuremathΛ_GUT, it will be possible to radiatively produce \ensuremathθ₁₃\ensuremath∼5\ifmmode^∘\else\textdegree\fi at \ensuremathΛ_EW both in the standard model and in its supersymmetric extensions. The mass spectrum of three heavy right-handed Majorana neutrinos and the cosmological baryon number asymmetry via leptogenesis are also calculated.

Citations

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