Search for oscillations of muon neutrinos to electron neutrinos

Thesis/Dissertation · Tue Dec 31 23:00:00 EST 1985

OSTI ID:6594564

Procario, M

The author has searched in the heavy liquid bubble chamber BEBC for electron neutrino charge current events which could arise from oscillation of the muon neutrinos (average energy approx.1.5 GeV) obtained with a low energy proton beam at the CERN PS targeted 825 m upstream from BEBC. The appearance of electron neutrino CC interactions provides a sensitive indication of nu/sub ..mu../ ..-->.. nu/sub e/ oscillation. The author observed 460 muon neutrino CC events and 4 electron neutrino CC events with an estimated background of 3.5 electron neutrino CC events. Using the likelihood ratio method to test the oscillation hypothesis, the author finds no evidence for nu/sub ..mu../ ..-->.. nu/sub e/ oscillation and set the limits deltam/sup 2/ less than or equal to 0.13 eV/sup 2/ (maximal mixing) and sin/sup 2/2theta less than or equal to 0.018 for deltam2 = 3 eV/sup 2/ at 90% confidence level.

• Research Organization: Wisconsin Univ., Madison (USA)
• OSTI ID: 6594564
• Country of Publication: United States
• Language: English

Related Subjects

645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
CERN PS SYNCHROTRON
CYCLIC ACCELERATORS
DATA
ELECTRON NEUTRINOS
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
FERMIONS
INFORMATION
LEPTONS
LIMITING VALUES
MASSLESS PARTICLES
MUON NEUTRINOS
NEUTRINO OSCILLATION
NEUTRINOS
NUMERICAL DATA
SYNCHROTRONS
WEINBERG ANGLE