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Search for Direc Magnetic Monopoles in e+e- Collisions with the OPAL Detector at LEP2

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arxiv 0707.0404 v1 pith:ZKYNFVWV submitted 2007-07-03 hep-ex

The OPAL collaboration , et al This is my paper · ORCID
classification hep-ex
keywords magneticmonopolesmonopoleaveragecollisionscross-sectiondetectorenergy
verification ladder T0 review T1 audit T2 compute T3 formal
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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 sqrt(s)= 206.3GeV. 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 (sigma) in the mass range 45 GeV/c^2<m_M<102 GeV/c^2. The average limit is sigma < 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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Cited by 2 Pith papers

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  1. The Euler-Heisenberg action for a $U(1)\times U(1)$ dyon quantum electrodynamics

    hep-th 2026-07 accept novelty 6.5 of 10

    One-loop Euler-Heisenberg Lagrangian for U(1)×U(1) dyon QED produces hybrid refractive indices and vacuum birefringence that reduce exactly to ordinary QED when magnetic charge vanishes.

  2. Cosmology-Independent Constraints on Irreducible Magnetic Monopole Background

    hep-ph 2024-12 conditional novelty 6.0 of 10

    Cosmic-ray collisions with interstellar gas create monopoles that would drain galactic magnetic fields, yielding new cosmology-independent Parker-like bounds on light monopoles.

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