PoS - Proceedings of Science
Volume 450 - The Eleventh Annual Conference on Large Hadron Collider Physics (LHCP2023) - session Poster session
Resummation effects in HECO pair production at the LHC: UFO implementation
E. Musumeci
Full text: pdf
Pre-published on: January 15, 2024
Published on:
Several theories that lie beyond the Standard Model include the existence of High Electric Charge Objects (HECOs). Due to the large coupling, the perturbation theory breaks down. Nevertheless, one can resum the QED corrections at a UV fixed point for high electric charge and mass values.
In this study, a HECO is assumed to be a spin-1/2 Dirac fermion which couples to photons and $Z^0$ bosons. At colliders, HECOs can be pair-produced via Drell-Yan and Photon-Fusion processes. The Universal FeynRules Output (UFO) implementation - including resummation effects - was performed for both production mechanisms, thus being available for Monte Carlo generators such as MadGraph5. The UFO models were successfully validated by comparing cross-section values obtained by analytical calculations through Wolfram Mathematica and those computed by MadGraph5. In this work, we perform
a Dyson–Schwinger resummation scheme, 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.
DOI: https://doi.org/10.22323/1.450.0261
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.