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Beyond : Absolute Mass Sensitivity in Neutrino Oscillations
Gustavo F. S. Alves, André L. C. de Gouvêa, Joshua Kaler +2
Conventional wisdom says that neutrino oscillations measure only mass-squared differences and not the absolute neutrino mass scale. This is true, however, only at leading order in…
Heavy Neutral Leptons via Axion-Like Particles at Neutrino Facilities
Asli M Abdullahi, André de Gouvêa, Bhaskar Dutta +2
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-l…
Solar neutrinos and visible decays to
André de Gouvêa, Jean Weill, Manibrata Sen
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 Neutrino Magnetic Moment Portal and Supernovae: New Constraints and Multimessenger Opportunities
Vedran Brdar, André de Gouvêa, Ying-Ying Li +1
We scrutinize the hypothesis that gauge singlet fermions -- sterile neutrinos -- interact with Standard Model particles through the transition magnetic moment portal. These interac…
Snowmass Theory Frontier Report
N. Craig, C. Csáki, A. X. El-Khadra +38
This report summarizes the recent progress and promising future directions in theoretical high-energy physics (HEP) identified within the Theory Frontier of the 2021 Snowmass Proce…
Addressing the Short-Baseline Neutrino Anomalies with Energy-Dependent Mixing Parameters
K. S. Babu, Vedran Brdar, André de Gouvêa +1
Several neutrino experiments have reported results that are potentially inconsistent with our current understanding of the lepton sector. A candidate solution to these so-called sh…