Abstract
We have searched for nucleon decay into five two-body final states using a 4.4 kiloton-year fiducial exposure of the Soudan 2 iron tracking calorimeter. For proton decay into the fully visible final states μ+η0 and e+η0, we observe zero and one event, respectively, that satisfy our search criteria for nucleon decay. The lifetime lower limits (τ/B) thus implied are 89×1030 years and 81×1030 years at 90% confidence level. For neutron decay into ν̄η0, we obtain the lifetime lower limit 71×1030 years. Limits are also reported for neutron decay into ν̄π0, and for proton decay into ν̄π+.
Original language | English (US) |
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Article number | 092003 |
Pages (from-to) | 1-11 |
Number of pages | 11 |
Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
Volume | 62 |
Issue number | 9 |
State | Published - Nov 1 2000 |