2021 Impact factor 4.991
Particles and Fields
Eur. Phys. J. C 26, 163-172 (2002)
DOI: 10.1140/epjc/s2002-01045-x

Search for nucleon decays induced by GUT magnetic monopoles with the MACRO experiment

M. Ambrosio et al.

(Received: 2 August 2002 / Published online: 25 October 2002 )

The interaction of a Grand Unification Magnetic Monopole with a nucleon can lead to a barion-number violating process in which the nucleon decays into a lepton and one or more mesons (catalysis of nucleon decay). In this paper we report an experimental study of the effects of a catalysis process in the MACRO detector. Using a dedicated analysis we obtain new magnetic monopole (MM) flux upper limits at the level of $\sim 3\cdot
10^{-16}~cm^{-2}~s^{-1}~sr^{-1}$ for $1.1\cdot 10^{-4} \le \vert\beta\vert \le 5\cdot 10^{-3}$ , based on the search for catalysis events in the MACRO data. We also analyze the dependence of the MM flux limit on the catalysis cross section.

© Società Italiana di Fisica, Springer-Verlag 2002