Search for Magnetic Monopole Pair Production in Ultraperipheral Pb+Pb Collisions at sNN=5.36 TeV with the ATLAS Detector at the LHC
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Search for Magnetic Monopole Pair Production in Ultraperipheral Pb+Pb Collisions at sNN=5.36 TeV with the ATLAS Detector at the LHC

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http://doi.org/10.1103/physrevlett.134.061803
No data is associated with this publication.
Creative Commons 'BY-NC' version 4.0 license
Abstract

This Letter presents a search for highly ionizing magnetic monopoles in 262  μb−1 of ultraperipheral Pb+Pb collision data at sNN=5.36  TeV collected by the ATLAS detector at the LHC. A new methodology that exploits the properties of clusters of hits reconstructed in the innermost silicon detector layers is introduced to study highly ionizing particles in heavy-ion data. No significant excess above the background, which is estimated using a data-driven technique, is observed. Using a nonperturbative semiclassical model, upper limits at 95% confidence level are set on the cross section for pair production of monopoles with a single Dirac magnetic charge in the mass range of 20–150 GeV. Depending on the model, monopoles with a single Dirac magnetic charge and mass below 80–120 GeV are excluded. © 2025 CERN, for the ATLAS Collaboration 2025 CERN

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