Resummation schemes for high-electric-charge objects leading to improved experimental mass limits
arXiv:2310.17452 · doi:10.1103/PhysRevD.109.036026
Abstract
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.
arXiv comment24 pages, 6 figures, 10 tables; typo correction in photon propagator in (26) and in respective Feynman rules in Tables V, VI and Eq.(A.4), with no effect on numerical results and conclusions; clarification added on HECO-photon vertex Feynman rule below (26)
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