This Letter presents a search for highly ionizing magnetic monopoles in (Formula presented) of ultraperipheral (Formula presented) collision data at (Formula presented) 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.

Aad, G., Aakvaag, E., Abbott, B., Abdelhameed, S., Abeling, K., Abicht, N.J., et al. (2025). Search for Magnetic Monopole Pair Production in Ultraperipheral Pb plus Pb Collisions at √sNN=5.36 TeV with the ATLAS Detector at the LHC. PHYSICAL REVIEW LETTERS, 134(6) [10.1103/PhysRevLett.134.061803].

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

Cerri A.;
2025-01-01

Abstract

This Letter presents a search for highly ionizing magnetic monopoles in (Formula presented) of ultraperipheral (Formula presented) collision data at (Formula presented) 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
Aad, G., Aakvaag, E., Abbott, B., Abdelhameed, S., Abeling, K., Abicht, N.J., et al. (2025). Search for Magnetic Monopole Pair Production in Ultraperipheral Pb plus Pb Collisions at √sNN=5.36 TeV with the ATLAS Detector at the LHC. PHYSICAL REVIEW LETTERS, 134(6) [10.1103/PhysRevLett.134.061803].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/1317660