Robustness of ARS Leptogenesis in Scalar Extensions

Abstract

Extensions of the Standard Model (SM) with sterile neutrinos are well motivated from the observed oscillations of the light neutrinos and they have shown to successfully explain the Baryon Asymmetry of the Universe (BAU) through, for instance, the so-called ARS leptogenesis. Sterile neutrinos can be added in minimal ways to the SM, but many theories exist where sterile neutrinos are not the only new fields. Such theories often include scalar bosons, which brings about the possibility of further interactions between the sterile neutrinos and the SM. In this paper we consider an extension of the SM with two sterile neutrinos and one scalar singlet particle and investigate the effect that an additional, thermalised, scalar has on the ARS leptogenesis mechanism. We show that in general the created asymmetry is reduced due to additional sterile neutrino production from scalar decays. When sterile neutrinos and scalars are discovered in the laboratory, our results will provide information on the applicability of the ARS leptogenesis mechanism.

arXiv comment16 pages plus references, 6 figures, 2 tables

References in corpus (48)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Oscillating neutrinos and mu --> e, gamma
• The $\nu$MSM, Dark Matter and Baryon Asymmetry of the Universe
• Resonant Leptogenesis
• The $\nu$MSM, Dark Matter and Neutrino Masses
• Baryogenesis via neutrino oscillations
• Light Sterile Neutrinos: A White Paper
• The Sphaleron Rate in the Minimal Standard Model
• The $\nu$MSM, Inflation, and Dark Matter
• Dark Matter, Baryogenesis and Neutrino Oscillations from Right Handed Neutrinos
• Non-unitarity of the leptonic mixing matrix: Present bounds and future sensitivities
• The nuMSM, leptonic asymmetries, and properties of singlet fermions
• Search for heavy Higgs bosons decaying into two tau leptons with the ATLAS detector using $pp$ collisions at $\sqrt{s}=13$ TeV
• Quantum Leptogenesis I
• Comments on the Electroweak Phase Transition
• Gauging U(1) symmetries and the number of right-handed neutrinos
• The diphoton signal of the light Higgs boson in Natural NMSSM
• Search for a standard model-like Higgs boson in the mass range between 70 and 110 GeV in the diphoton final state in proton-proton collisions at $\sqrt{s}=$ 8 and 13 TeV
• Baryon Asymmetry of the Universe in the NuMSM
• Improved BBN constraints on Heavy Neutral Leptons
• A 96 GeV Higgs Boson in the N2HDM
• Phenomenological signatures of additional scalar bosons at the LHC
• Leptogenesis and Neutrino Oscillations in the Classically Conformal Standard Model with the Higgs Portal
• ARS Leptogenesis
• Baryogenesis through Neutrino Oscillations: A Unified Perspective
• Kinetic Equations for Baryogenesis via Sterile Neutrino Oscillation
• The Hubble Tension as a Hint of Leptogenesis and Neutrino Mass Generation
• MeV-scale sterile neutrino decays at the Fermilab Short-Baseline Neutrino program
• Low-scale leptogenesis with three heavy neutrinos
• Uniting low-scale leptogeneses
• GeV-scale hot sterile neutrino oscillations: a derivation of evolution equations
• Neutrino dynamics below the electroweak crossover
• Sterile neutrino Dark Matter production from scalar decay in a thermal bath
• Dark Matter and Leptogenesis Linked by Classical Scale Invariance
• The emergence of multi-lepton anomalies at the LHC and their compatibility with new physics at the EW scale
• Fermion number violating effects in low scale leptogenesis
• Parameter space of baryogenesis in the $\nu$MSM
• Low-scale leptogenesis assisted by a real scalar singlet
• Comparison of Boltzmann Kinetics with Quantum Dynamics for a Chiral Yukawa Model Far From Equilibrium
• Possible Hints of Sterile Neutrinos in Recent Measurements of the Hubble Parameter
• Freeze-out of baryon number in low-scale leptogenesis
• Leptogenesis from oscillations and dark matter
• Evidence of the true Higgs boson $H_T$ at the LHC Run 2
• Accumulating Evidence for the Associated Production of a New Higgs Boson at the Large Hadron Collider
• Indications for extra scalars at LHC? -- BSM physics at future $e^{+}{e}^{-}$ colliders
• Extended scalar sectors at current and future colliders
• Inverse Seesaw, dark matter and the Hubble tension

Cited by in corpus (3)

• Low-scale leptogenesis with flavour and CP symmetries
• Connecting multi-lepton anomalies at the LHC and in Astrophysics with MeerKAT/SKA
• Impact of dim-6 $\nu$SMEFT operators on low-scale leptogenesis