Search for the Proton Decay Mode proton to neutrino K+ in Soudan 2

Abstract

We have searched for the proton decay mode proton to neutrino K+ using the one-kiloton Soudan 2 high resolution calorimeter. Contained events obtained from a 3.56 kiloton-year fiducial exposure through June 1997 are examined for occurrence of a visible K+ track which decays at rest into mu+ nu or pi+ pi0. We found one candidate event consistent with background, yielding a limit, tau/B > 4.3 10^{31} years at 90% CL with no background subtraction.

arXiv comment13 pages, Latex, 3 tables and 3 figures, Accepted by Physics Letters B

References in corpus (2)

• Nucleon Decay in the Minimal Supersymmetric $SU(5)$ Grand Unification
• Measurement of the atmospheric neutrino flavour composition in Soudan 2

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• Gauge Mediated Proton Decay in a Renormalizable SUSY SO(10) with Realistic Mass Matrices
• Search for nucleon decay into lepton + K0 final states using Soudan 2
• Gauge unification in 5-D SU(5) model with orbifold breaking of GUT symmetry