Speaker
Description
Super-Kamiokande has observed $^8$B solar neutrino elastic scattering on electrons with recoil electrons at kinetic energies as low as 3.49 MeV to study neutrino flavor conversion within the sun. At SK-observable energies, these conversions are dominated by the Mikheyev–Smirnov–Wolfenstein effect. An upturn in the electron survival probability in which vacuum neutrino oscillations become dominant is predicted to occur at lower energies, but radioactive background increases exponentially with decreasing energy. New machine learning approaches provide substantial background reduction below 3.49 MeV such that statistical extraction of solar neutrino interactions becomes feasible. Measurements of the solar neutrino flux in this energy region using a boosted decision tree for event selection will be presented.
| Poster prize | Yes |
|---|---|
| Given name | Alejandro |
| Surname | Yankelevich |
| First affiliation | University of California, Irvine |
| Institutional email | ayankele@uci.edu |
| Gender | Male |
| Collaboration (if any) | Super-Kamiokande |
