  High-Electric-Charge compact Objects (HECOs) appear in several theoretical
particle physics models beyond the Standard Model, and are actively searched
for in current colliders, such as the Large Hadron Collider at CERN. In such
searches, mass bounds of these objects have been placed, using Drell-Yan and
photon-fusion processes at tree level so far. However, such mass-bound
estimates are not reliable, given that, as a result of the large values of the
electric charge of the HECO, perturbative Quantum Electrodynamics calculations
break down. In this work, we perform a Dyson-Schwinger resummation scheme (as
opposed to lattice strong-coupling approach), which makes the computation of
the pertinent HECO-production cross sections reliable, thus allowing us to
extract improved mass bounds for such objects from ATLAS and MoEDAL searches.
