Final results of magnetic monopole searches with the MACRO experimentThe MACRO Collaboration
(Received: 15 July 2002 / Published online: 27 September 2002)
We present the final results obtained by the MACRO experiment in the search for GUT magnetic monopoles in the penetrating cosmic radiation, for the range . Several searches with all the MACRO sub-detectors (i.e. scintillation counters, limited streamer tubes and nuclear track detectors) were performed, both in stand alone and combined ways. No candidates were detected and a Confidence Level (C.L.) upper limit to the local magnetic monopole flux was set at the level of cm -2 s -1 sr -1. This result is the first experimental limit obtained in direct searches which is well below the Parker bound in the whole range in which GUT magnetic monopoles are expected.
© Società Italiana di Fisica, Springer-Verlag 2002