44 citations · 267 across the 19 of their papers we have counts for
19 papers · 1 filter
Affleck-Dine Dirac Leptogenesis
Neil D. Barrie, Chengcheng Han
We present a minimal framework that realises successful Dirac Leptogenesis through the Affleck-Dine mechanism. A single right-handed neutrino and a neutrinophillic Higgs doublet ar…
Resonant Vector Dark Matter Production during Inflation
Neil D. Barrie
We present a new mechanism for generating the observed dark matter energy density, through resonant production of vector dark matter during inflation. Resonant amplification of the…
Lepton Flavour Violation Tests of Type II Seesaw Leptogenesis
N. D. Barrie, S. T. Petcov
Upcoming Lepton Flavour Violation experiments searching for and to conversion in nuclei processes will provide new opportunities to test the fundamental…
Type II Seesaw Leptogenesis
Neil D. Barrie, Chengcheng Han, Hitoshi Murayama
The Type II Seesaw Mechanism provides a minimal framework to explain the neutrino masses involving the introduction of a single triplet Higgs to the Standard Model. However, this s…
Affleck-Dine Leptogenesis from Higgs Inflation
Neil D. Barrie, Chengcheng Han, Hitoshi Murayama
We find that the triplet Higgs of the Type II seesaw mechanism can simultaneously generate the neutrino masses and observed baryon asymmetry, while playing a role in inflation. We…
Gravitational Leptogenesis in Bounce Cosmology
Neil D. Barrie
We investigate whether successful Gravitational Leptogenesis can take place during an Ekpyrotic contraction phase. Two possible paths by which this can occur are coupling the Ekpyr…
Searching for Monopoles via Monopolium Multiphoton Decays
Neil D. Barrie, Akio Sugamoto, Matthew Talia +1
We explore the phenomenology of a model of monopolium based on an electromagnetic dual formulation of Zwanziger and lattice gauge theory. The monopole is assumed to have a finite-s…
Higgs Inflation, Vacuum Stability, and Leptogenesis
Neil D. Barrie, Akio Sugamoto, Tatsu Takeuchi +1
We consider the introduction of a complex scalar field carrying a global lepton number charge to the Standard Model and the Higgs inflation framework. The conditions are investigat…
Big Bounce Baryogenesis
Neil D. Barrie
We explore the possibility of an Ekpyrotic contraction phase harbouring a mechanism for Baryogenesis. A Chern-Simons coupling between the fast-rolling Ekpyrotic scalar and the Stan…
Broken Democracy with Intermediate Residual Symmetry and Random Perturbations
Neil D. Barrie, Shao-Feng Ge, Tsutomu T. Yanagida
The democratic mass matrix is an intriguing possibility for explaining the observed fermion mixings due to its inherent hierarchical mass eigenvalues and large mixing angles. Never…
Pendulum Leptogenesis
Kazuharu Bamba, Neil D. Barrie, Akio Sugamoto +2
We propose a new non-thermal Leptogenesis mechanism that takes place during the reheating epoch, and utilizes the Ratchet mechanism. The interplay between the oscillation of the in…
Exotic Lepton Searches via Bound State Production at the LHC
Neil D. Barrie, Archil Kobakhidze, Shelley Liang +2
Heavy long-lived multi-charged leptons (MCLs) are predicted by various new physics models. These hypothetical MCLs can form bound states, due to their high electric charges and lon…
Gravitational Instabilities of the Cosmic Neutrino Background with Non-zero Lepton Number
Neil D. Barrie, Archil Kobakhidze
We argue that a cosmic neutrino background that carries non-zero lepton charge develops gravitational instabilities. Fundamentally, these instabilities are related to the mixed gra…
Ratchet Baryogenesis with an Analogy to the Forced Pendulum
Kazuharu Bamba, Neil D. Barrie, Akio Sugamoto +2
A new scenario of baryogenesis via the ratchet mechanism is proposed based on an analogy to the forced pendulum. The oscillation of the inflaton field during the reheating epoch af…
Construction of a Model of Monopolium and its Search via Multi-Photon Channels at LHC
Neil D. Barrie, Akio Sugamoto, Kimiko Yamashita
A model of monopolium is constructed based on an electromagnetic dual formulation of Zwanziger and lattice gauge theory. To cope with the strong coupling nature of the magnetic cha…
Heavy Leptonium as the Origin of the 750 GeV Diphoton Excess
Neil D. Barrie, Archil Kobakhidze, Shelley Liang +2
We propose a hypothetical heavy leptonium, the scalar bound state of an exotic lepton-antilepton pair, as a candidate for the recent 750 GeV resonance in the early LHC Run 2 data.…
750 GeV Composite Axion as the LHC Diphoton Resonance
Neil D. Barrie, Archil Kobakhidze, Matthew Talia +1
We propose that the 750 GeV resonance, presumably observed in the early LHC Run 2 data, could be a heavy composite axion that results from condensation of a hypothetical quark in a…
Generating Luminous and Dark Matter During Inflation
Neil D. Barrie, Archil Kobakhidze
We propose a new mechanism for generating both luminous and dark matter during cosmic inflation. According to this mechanism, ordinary and dark matter carry common charge which is…
Inflationary Baryogenesis in a Model with Gauged Baryon Number
Neil D. Barrie, Archil Kobakhidze
We argue that inflationary dynamics may support a scenario where significant matter-antimatter asymmetry is generated from initially small-scale quantum fluctuations that are subse…