Heavy Sterile Neutrino Decay at Short-Baseline Experiments
| Main Authors: | Gabriela Vitti Stenico, Andre De Gouvea, Orlando Luis Goulart Peres, Suprabh Prakash |
|---|---|
| Format: | Proceeding poster eJournal |
| Terbitan: |
, 2020
|
| Online Access: |
https://zenodo.org/record/4124109 |
Daftar Isi:
- We studied a neutrino decay scenario as a potential solution to conciliate the tension between appearance and disappearance data at the short-baseline experiments. Particularly, we considered a heavy neutrino mass-eigenstate that decays into a usual light neutrino plus a massless scalar. Under this neutrino decay hypothesis, we fitted LSND and MiniBooNE electron neutrino appearance data assuming Dirac or Majorana neutrinos. We obtained reasonable results for both cases. Including muon neutrino disappearance searches, and also current bounds on the new decay coupling constant, we noticed that the heavy neutrino decay scenario is compatible as long as 1 MeV $\geq m_4 \geq$ 10 keV. Finally, we showed that the future SBN program at Fermilab has the potential to definitively test the considered decay hypothesis.