Author: sylvia

• 

  faculty

  James Bartlett

• research-publ

  Neutrino magnetic moment portal and supernovae: New constraints and multimessenger opportunities

  We scrutinize the hypothesis that gauge singlet fermions—sterile neutrinos—interact with Standard Model particles through the transition magnetic moment portal. These interactions lead to the production of sterile neutrinos in supernovae […]

• research-publ

  Solar neutrinos and 𝜈2 visible decays to 𝜈1

  Experimental bounds on the neutrino lifetime depend on the nature of the neutrinos and the details of the potentially new physics responsible for neutrino decay. In the case where the […]

• research-publ

  Heavy Neutral Leptons via Axionlike Particles at Neutrino Facilities

  Heavy neutral leptons (HNLs) are often among the hypothetical ingredients behind nonzero neutrino masses. If sufficiently light, they can be produced and detected in fixed-target-like experiments. We show that if […]

• research-publ

  𝑇-invariance violation in neutrino oscillations and matter effects

  We investigate the impact of matter effects on 𝑇 (time-reversal)-odd observables, making use of the quantum-mechanical formalism of neutrino-flavor evolution. We attempt to be comprehensive and pedagogical. Matter-induced 𝑇-invariance violation […]