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Revisiting experimental mass limits on HECOs using Dyson-Schwinger resummation

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arxiv 2410.16434 v1 pith:6MAXD7JN submitted 2024-10-21 hep-ph hep-exhep-th

Jean Alexandre , Nick E. Mavromatos , Vasiliki A. Mitsou , Emanuela Musumeci This is my paper · ORCID
classification hep-phhep-exhep-th
keywords largemassobjectsboundshecosreliableresummationsearches
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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 (LHC). 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 estimates are not reliable, given that, as a result of the large values of the electric charge of the HECO, perturbative QED calculations break down. We present a Dyson-Schwinger-like resummation scheme, which allows for a large gauge coupling and thus 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.

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  1. Impact of resummation on the production and experimental bounds of scalar high-electric-charge objects

    hep-ph 2024-12 conditional novelty 5.0 of 10

    For scalar HECOs, a Dyson-Schwinger resummation raises predicted LHC production cross sections and strengthens 95% CL mass bounds by up to about 30% compared with tree-level estimates.

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