Title
Search for Dirac magnetic monopoles in <tex>$e^{+}e^{-}$</tex> collisions with the OPAL detector at LEP2 Search for Dirac magnetic monopoles in <tex>$e^{+}e^{-}$</tex> collisions with the OPAL detector at LEP2
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Amsterdam ,
Subject
Physics
Source (journal)
Physics letters: B. - Amsterdam, 1967, currens
Volume/pages
663(2008) :1/2 , p. 37-42
ISSN
0370-2693
ISI
000256744300007
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
This Letter describes a direct search for pair produced magnetic monopoles in e+e− collisions. The analysis is based on 62.7 pb−1 of data collected with the OPAL detector at an average centre-of-mass energy of . The monopole signal was assumed to be characterized by two back-to-back particles with an anomalously high ionization energy loss dE/dx in the tracking chambers. No evidence for production of monopoles was observed. Upper limits were obtained on the magnetic monopole pair-production cross-section (ó) in the mass range 45 GeV/c2<mM<102 GeV/c2. The average limit is ó<0.05 pb and is essentially independent of the magnetic monopole mass. The cross-section limit is derived at the 95% confidence level and is valid for spin-1/2 magnetic monopoles.
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