Results from the KGF proton decay experiment

Abstract

The data from the KGF experiment at the depth of 2.3 km underground are used to search for GUT signals in the form of nucleon decay\(n - \bar n\) oscillation and monopoles. Four events are considered as candidates for nucleon decay, whereas one plausible event is recorded to correspond to\(n - \bar n\) oscillation. Using different methods the monopole flux is shown to be <10−14 cm−2 s−1 sr−1 for velocity range 10−3c÷c. The angular distribution of cosmic-ray muons is used to derive an upper limit of 10−3 for the flux of prompt muons of energy up to a few hundred TeV in comparison to pions of same energy at production.