Candidate events in a search for nu-bar µ --> nu-bar e oscillations
Abstract
A search for ν¯e's in excess of the number expected from conventional sources has been made using the Liquid Scintillator Neutrino Detector, located 30 m behind the Los Alamos Meson Physics Facility beam stop. The ν¯e are detected via ν¯e p-->e+ n with e+ energy between 36 and 60 MeV, followed by a γ ray from np-->dγ ( 2.2 MeV). Using strict cuts to identify γ rays correlated with e+ yields 9 events with only 2.1+/-0.3 background expected. A likelihood fit to the entire e+ sample results in a total excess of 16.4+9.7-8.9+/-3.3 events. If attributed to ν¯μ-->ν¯e oscillations, this corresponds to an oscillation probability of ( 0.34+0.20-0.18+/-0.07)%.
- Publication:
-
Physical Review Letters
- Pub Date:
- October 1995
- DOI:
- 10.1103/PhysRevLett.75.2650
- arXiv:
- arXiv:nucl-ex/9504002
- Bibcode:
- 1995PhRvL..75.2650A
- Keywords:
-
- Nuclear Experiment;
- High Energy Physics - Experiment;
- High Energy Physics - Phenomenology;
- Nuclear Theory
- E-Print:
- 3 PS figures