Speaker
Description
[Cancelled due to Analysis not completing in time]
A search for Dirac magnetic monopoles as exotic, long-lived particles is conducted using proton-proton collision data collected with the CMS detector at the CERN LHC, corresponding to an integrated luminosity of 137.2 fb⁻¹ from 2016 to 2018. The analysis focuses on the distinctive signature of a highly ionizing particle that deposits most of its energy in a small number of crystals within the electromagnetic calorimeter. Signal models with various monopole spin hypotheses and masses are evaluated for both Drell–Yan and photon-fusion production mechanisms. The search utilizes two complementary strategies: one exploits the reconstructed trajectory of a highly ionizing particle in the tracking detector and the expected shower shape in the ECAL crystals, while the other targets events with large missing transverse momentum resulting from monopoles not retained by the standard trigger selection. The results are presented as upper limits at the 95% confidence level on the production cross section of Dirac magnetic monopoles for the considered signal scenarios. These findings constitute the first CMS limits on Dirac magnetic monopole production for the specified benchmark mechanisms.
| Submitted on behalf of ... | Submitted centrally on behalf of the Collaboration |
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