2019/11/30 by André de Gouvêa, O. L. G. Peres, Suprabh Prakash +1 · 45 citations
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #Electron neutrino #Fermilab #MAJORANA #Measurements of neutrino speed #MiniBooNE #Muon #Neutrino #Neutrino Physics Research #Neutrino detector #Neutrino oscillation #Particle physics theoretical and experimental studies #hep-ex #hep-ph
paper · pdf · doi:10.1007/jhep07(2020)141
published in Journal of High Energy Physics 2020(7) (Springer Nature) · This version v2 has been accepted for publication in JHEP. The changes from previous version are: inclusion of the data from KARMEN in the analysis, a new subsection about the sensitivity of SBN to nonzero decay effects, an new appendix describing the details of MiniBooNE analysis, additional references and some other minor changes
openalex created_date 2019/11/22 · arxiv created 2020/06/27 · openalex publication_date 2020/07/01 · arxiv updated 2020/10/13 · openalex updated_date 2026/08/06
A bstract 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 ≳ m 4 ≳ 10 keV. The Short-Baseline Neutrino Program (SBN) at Fermilab should be able to definitively test the decaying-sterile-neutrino hypothesis.