Heavy gravitino from dynamical generation of right-handed neutrino mass scale, and gravitational waves

2018/05/31 by Ryo Nagai, Fuminobu Takahashi, Norimi Yokozaki
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Electron #Gaugino #Grand Unified Theory #Gravitational wave #Gravitino #Hidden sector #Leptogenesis #Lepton #Mass generation #Neutrino #Nuclear physics #Observable #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Supergravity #Supersymmetry #Supersymmetry breaking #hep-ex #hep-ph

paper · pdf · doi:10.1016/j.physletb.2018.07.022

published in Physics Letters B 784, 37-42 (Elsevier BV) · 15 pages, 4 figures

openalex publication_date 2018/07/18 · arxiv created 2018/07/31 · openalex created_date 2018/08/03 · arxiv updated 2018/08/21 · openalex updated_date 2026/08/06

Abstract

The absence of supersymmetric particles at the weak scale is a puzzle if supersymmetry solves the gauge hierarchy problem. We show that, if the right-handed neutrino masses arise from hidden gaugino condensation via GUT-suppressed operators, successful thermal leptogenesis leads to the lower bound on the gravitino mass, which may explain the little hierarchy problem. If domain walls associated with the gaugino condensation are formed after inflation, they annihilate when H∼m3/2. We address the possibility that observable gravitational wave signals might emerge from the domain wall annihilation.

Citations

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Cosmological selection of multi-TeV supersymmetry
• Moduli-Induced Gravitino Problem
• CP asymmetry in Majorana neutrino decays
• Electroweak-scale resonant leptogenesis
• Baryogenesis from mixed particle decays
• Cosmological implications of dynamical supersymmetry breaking
• Cosmological moduli problem and thermal inflation models
• Resonant CP violation induced by particle mixing in transition amplitudes
• A complete analysis of FCNC and CP constraints in general SUSY extensions of the standard model
• Big-bang nucleosynthesis and gravitinos
• Topology of cosmic domains and strings
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• PeV-scale supersymmetry
• Gravitational field of vacuum domain walls and strings
• Viable chaotic inflation as a source of neutrino masses and leptogenesis
• A bound on neutrino masses from baryogenesis