We describe a search method for fast moving (beta = v/c > 5 x 10(-3)) magnetic monopoles using simultaneously the scintillator, streamer tube and track-etch subdetectors of the MACRO apparatus. The first two subdetectors are used primarily for the identification of candidates while the track-etch one is used as the final tool for their rejection or confirmation. Using this technique, a first sample of more than two-years of data has been analyzed without any evidence of a magnetic monopole. We set a 90% CL upper limit to the local monopole flux of 1.5 x 10(-15) cm(-2) s(-1) sr(-1) in the velocity range 5 x 10(-3) less than or equal to beta less than or equal to 0.99 and for nucleon decay catalysis cross-section smaller than similar to1 mb (C) 2002 Elsevier Science B.V. All rights reserved. RI Spurio, Maurizio/G-4170-2012; Lamanna, Ernesto/C-7658-2012; giglietto, nicola/I-8951-2012; Sirri, Gabriele/J-5067-2012; Cafagna, Francesco/A-9299-2010 OI Lamanna, Ernesto/0000-0002-7844-8230; Sirri, Gabriele/0000-0003-2626-2853; Cafagna, Francesco/0000-0002-7450-4784
A combined analysis technique for the search for fast magnetic monopoles with the MACRO detector
CARUSO, ROSSELLA;
2002-01-01
Abstract
We describe a search method for fast moving (beta = v/c > 5 x 10(-3)) magnetic monopoles using simultaneously the scintillator, streamer tube and track-etch subdetectors of the MACRO apparatus. The first two subdetectors are used primarily for the identification of candidates while the track-etch one is used as the final tool for their rejection or confirmation. Using this technique, a first sample of more than two-years of data has been analyzed without any evidence of a magnetic monopole. We set a 90% CL upper limit to the local monopole flux of 1.5 x 10(-15) cm(-2) s(-1) sr(-1) in the velocity range 5 x 10(-3) less than or equal to beta less than or equal to 0.99 and for nucleon decay catalysis cross-section smaller than similar to1 mb (C) 2002 Elsevier Science B.V. All rights reserved. RI Spurio, Maurizio/G-4170-2012; Lamanna, Ernesto/C-7658-2012; giglietto, nicola/I-8951-2012; Sirri, Gabriele/J-5067-2012; Cafagna, Francesco/A-9299-2010 OI Lamanna, Ernesto/0000-0002-7844-8230; Sirri, Gabriele/0000-0003-2626-2853; Cafagna, Francesco/0000-0002-7450-4784I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
