Results from a new search for proton decay

J. Bartelt, H. Courant, K. Heller, T. Joyce, M. Marshak, E. Peterson, K. Ruddick, M. Shupe, D. S. Ayres, J. W. Dawson, T. H. Fields, E. N. May, L. E. Price

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


The authors have searched for the decay of protons and neutrons bound in nuclei using Soudan 1, a 31.5-metric-ton iron-loaded concrete tracking calorimeter, instrumented with 3456 proportional tubes. During a live time of 0.38 yr, the authors have observed one candidate event wholly contained within the detector. If this event is attributed to a background source, a lower bound (90% confidence level) can be established on the lifetime for nucleon decay through any of a wide range of modes of 1× 1030 yr.

Original languageEnglish (US)
Pages (from-to)651-654
Number of pages4
JournalPhysical review letters
Issue number9
StatePublished - 1983
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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