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 similar to 3 (.) 10(-16) cm(-2) s(-1) sr(-1) for 1.1(.) 10(-4) less than or equal to \beta\ less than or equal to 5 (.) 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.
|Titolo:||Search for nucleon decays induced by GUT magnetic monopoles with the MACRO experiment|
|Data di pubblicazione:||2002|
|Digital Object Identifier (DOI):||10.1140/epjc/s2002-01045-x|
|Appare nelle tipologie:||1.1 Articolo in rivista|