First Search for Dyons with the Full MoEDAL Trapping Detector in 13 TeV pp Collisions.

Area of Science:

• Particle Physics
• High-Energy Physics
• Cosmic Ray Physics

Background:

• The existence of magnetic monopoles and dyons is predicted by some Grand Unified Theories.
• The MoEDAL experiment at the Large Hadron Collider (LHC) is designed to search for these exotic particles.

Purpose of the Study:

• To search for evidence of dyons captured in the MoEDAL trapping detector.
• To set limits on the mass and charge of potential dyons and monopoles.

Main Methods:

• The MoEDAL detector, comprising 800 kg of aluminum, was exposed to 13 TeV proton-proton collisions at the LHCb interaction point.
• Aluminum volumes were analyzed using a superconducting quantum interference device (SQUID) magnetometer to detect persistent currents indicative of trapped magnetic charge.

Main Results:

• The study excluded dyons with magnetic charge up to five Dirac charges (5gD) and electric charge up to 200 times the fundamental electric charge, for masses between 870-3120 GeV.
• Monopoles with magnetic charge up to 5gD were also excluded for masses between 870-2040 GeV.

Conclusions:

• The experiment has set stringent limits on the existence of dyons and monopoles in the studied mass and charge ranges.
• These results contribute to constraining theoretical models beyond the Standard Model of particle physics.