| Full text | |
| Author(s): |
de Gouvea, Andre
;
Peres, O. L. G.
;
Prakash, Suprabh
;
Stenico, G., V
Total Authors: 4
|
| Document type: | Journal article |
| Source: | Journal of High Energy Physics; v. N/A, n. 7, p. 26-pg., 2020-07-21. |
| Abstract | |
We explore the hypothesis that the unexplained data from Liquid Scintillator Neutrino Detector (LSND) and MiniBooNE experiments are evidence for a new, heavy neutrino mass-eigenstate that mixes with the muon-type neutrino and decays into an electron-type neutrino and a new, very light scalar particle. We consider two different decay scenarios, one with Majorana neutrinos, one with Dirac neutrinos; both fit the data equally well. We find a reasonable, albeit not excellent, fit to the data of MiniBooNE and LSND. The decaying-sterile-neutrino hypothesis, however, cleanly evades constraints from disappearance searches and precision measurements of leptonic meson decays, as long as 1 MeV greater than or similar to m(4) greater than or similar to 10 keV. The Short-Baseline Neutrino Program (SBN) at Fermilab should be able to definitively test the decaying-sterile-neutrino hypothesis. (AU) | |
| FAPESP's process: | 16/00272-9 - Neutrino Phenomenology in longbaseline experimentos |
| Grantee: | Gabriela Vitti Stenico |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 14/19164-6 - Challenges in the 21st century in neutrino physics and astrophysics |
| Grantee: | Orlando Luis Goulart Peres |
| Support Opportunities: | Special Projects |
| FAPESP's process: | 17/02361-1 - Searching for a new physics in neutrino experiments |
| Grantee: | Suprabh Prakash |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 17/12904-2 - Neutrino phenomenology for longbaseline experiments |
| Grantee: | Gabriela Vitti Stenico |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate |