Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2002-07-05
Eur.Phys.J.C26:163-172,2002
Physics
High Energy Physics
High Energy Physics - Experiment
12 pages, Latex, 10 figures and 2 Tables
Scientific paper
10.1140/epjc/s2002-01045-x
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 $1.1\cdot 10^{-4} \le |\beta| \le 5\cdot 10^{-3}$, 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.
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