The search for n-nbar oscillation in Super-Kamiokande I

Details The search for n-nbar oscillation in Super-Kamiokande I The search for n-nbar oscillation in Super-Kamiokande I

2011-09-20

arxiv.org/abs/1109.4227v1

Physics

High Energy Physics

High Energy Physics - Experiment

6 pages, 2 figures

Scientific paper

A search for neutron-antineutron (n - nbar) oscillation, a process with |\DeltaB| = 2 that has been predicted by right-left (R-L) symmetric gauge theories, was undertaken using the 24.5\times10^33 neutron-yrs exposure of Super- Kamiokande I, in an analysis that included the significant sources of experimental uncertainties. No evidence for n - nbar oscillation was found, the lower limit of the lifetime for neutrons bound in ^16 O was determined to be 1.89 \times 10^32 yrs at the 90% confidence level (C.L.), and the corresponding limit for the oscillation time for free neutrons was calculated to be 2.44 \times 10^8 sec using a theoretical suppression factor of 1.0 \times 10^23 sec^-1.

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