Phys. Rev. D 62, 092003 (2000) [11 pages]Search for nucleon decay with final states l+η0,ν̅ η0, and ν̅ π+,0 using Soudan 2Received 7 January 2000; published 5 October 2000 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 89×1030years and 81×1030years at 90% confidence level. For neutron decay into ν̅ η0, we obtain the lifetime lower limit 71×1030years. Limits are also reported for neutron decay into ν̅ π0, and for proton decay into ν̅ π+. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.62.092003
DOI:
10.1103/PhysRevD.62.092003
PACS:
11.30.Fs, 11.30.Pb, 12.20.Fv, 14.20.Dh
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