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Search for Highly Ionizing Particles in pp Collisions during LHC Run 2 Using the Full MoEDAL Detector.

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  • 1Theoretical Particle Physics and Cosmology Group, Physics Department, King's College London, United Kingdom.

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|March 7, 2025
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Summary
This summary is machine-generated.

This study searched for magnetic monopoles (MMs) and high electric charge objects (HECOs) using the MoEDAL detector. It set the world's strongest charge limits for these hypothetical particles, advancing fundamental physics searches.

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Area of Science:

  • High-energy particle physics
  • Searches for new fundamental particles
  • Electromagnetism and particle properties

Background:

  • The Standard Model of particle physics does not predict magnetic monopoles (MMs) or high electric charge objects (HECOs).
  • Experimental searches for these exotic particles are crucial for exploring physics beyond the Standard Model.
  • The MoEDAL experiment at the Large Hadron Collider (LHC) is uniquely designed to detect highly ionizing particles.

Purpose of the Study:

  • To search for magnetic monopoles (MMs) and high electric charge objects (HECOs) with spins 0, 1/2, and 1.
  • To set new world-leading limits on the production cross-section and mass of MMs and HECOs.
  • To interpret the search results within theoretical frameworks like Drell-Yan and photon-fusion pair production.

Main Methods:

  • Utilizing the full MoEDAL detector array for the first time.
  • Analyzing data from 6.46 fb⁻¹ of proton-proton collisions at 13 TeV center-of-mass energy.
  • Employing a detector system capable of direct calibration with heavy ions for highly ionizing particle detection.

Main Results:

  • Achieved mass limits for directly produced MMs up to 10 Dirac magnetic charges.
  • Established electric charge limits for HECOs in the range of 10e to 400e.
  • Set the strongest world limits to date on the production of MMs and HECOs.

Conclusions:

  • The MoEDAL experiment has delivered the most stringent constraints on MMs and HECOs globally.
  • The results significantly narrow the parameter space for these hypothetical particles.
  • MoEDAL's unique capabilities provide a definitive tool for magnetic charge measurements at the LHC.