An alternative analysis of the LSND neutrino oscillation search data on {bar {nu}}{sub {mu}}{r_arrow}{bar {nu}}{sub {ital e}}
- University of Pennsylvania, Philadelphia, Pennsylvania 19104 (United States)
This analysis of data from the Liquid Scintillator Neutrino Detector (LSND) at the Los Alamos Meson Physics Facility (LAMPF) sets bounds on neutrino oscillations in the appearance channel {bar {nu}}{sub {mu}}{r_arrow}{bar {nu}}{sub {ital e}} by searching for the signature of the reaction {bar {nu}}{sub {ital e}}{ital p}{r_arrow}{ital e}{sup +}{ital n}: an {ital e}{sup +} followed by a 2.2 MeV {gamma} ray from neutron capture. Five {ital e}{sup {plus_minus}}-{gamma} coincidences are observed in time with the LAMPF beam, with an estimated background of 6.2 events. The 90% confidence limits obtained in this analysis are {Delta}{ital m}{sup 2}{lt}0.07 eV{sup 2} for sin{sup 2}2{theta}=1, and sin{sup 2}2{theta}{lt}6{times}10{sup {minus}3} for {Delta}{ital m}{sup 2}{approx_gt}20 eV{sup 2}. The possible signal at the edge of the detector`s sensitivity is mentioned.
- OSTI ID:
- 118580
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 14 Vol. 75; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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