3 citations · 3 across the 7 of their papers we have counts for
7 papers
Three-Flavoured Thermal Leptogenesis Without Tuning
Angus Spalding
We investigate thermal leptogenesis in an extension of the Type-I seesaw in which a real singlet scalar couples non-diagonally to the right-handed neutrinos. The interactions $-y_{…
Reconstructing Early Primordial Black Hole Domination from Gravitational-Wave Backgrounds
Daniel del-Corral, Angus Spalding
Primordial Black Holes (PBHs) with masses below g occupy an interesting region of parameter space that is largely inaccessible to conventional observations. Desp…
Whispers of Supergravity in Gravitational Wave Backgrounds: Determining the Gravitino Mass from Cosmic Thermal History
Angus Spalding, Stephen F. King
Gravitino masses above the electroweak scale provide the simplest solution to the gravitino problem, but such large mass scales lie far beyond the reach of collider experiments. We…
Irreducible Gravitational Wave Background as a Particle Detector
Anish Ghoshal, Angus Spalding, Graham White
Beyond the standard model particles can imprint a temporary early matter-dominated epoch on a stochastic gravitational-wave background. For a freely propagating background whose pr…
Near-Resonant Thermal Leptogenesis
Angus Spalding
We study leptogenesis in the quasi-degenerate but non-resonant regime. Expanding the CP asymmetry parameter near degeneracy and imposing the conservative non-resonance condition th…
Cosmic Strings Gravitational Wave Probe of Leptogenesis: Thermal, Non-thermal, Near-resonant and Flavourful
Anish Ghoshal, Angus Spalding, Graham White
Breaking a global or local symmetry at high scales simultaneously generates Majorana masses for heavy right-handed neutrinos and produces a network of cosmic strin…
Gravitational Wave Spectral Shapes as a probe of Long Lived Right-handed Neutrinos, Leptogenesis and Dark Matter: Global versus Local B-L Cosmic Strings
Satyabrata Datta, Anish Ghoshal, Angus Spalding +1
The scale of the seesaw mechanism is typically much larger than the electroweak scale. This hierarchy can be naturally explained by symmetry, which after spontaneous s…