Search for neutron-antineutron oscillations using multiprong events in Soudan 2
Search for neutron-antineutron oscillations using multiprong events in Soudan 2
We have searched for neutron-antineutron oscillations using the 5.56 fiducial kiloton-year exposure of the Soudan 2 iron tracking calorimeter. We require candidate nn̄ occurrences to have >~4 prongs (tracks and showers) and to have kinematics compatible with n̄N annihilation within a nucleus. We observe five candidate events, with an estimated …