activity
20222025
most citedQED Meson Description of the X17 and Other Anomalous Particles

46 citations · 49 across the 6 of their papers we have counts for

collaborators

6 papers

hep-ph2025★ 2 cited

Unveiling atomic electron motion effects in high energy collisions at NA64

Fernando Arias-Aragón, Giovanni Grilli di Cortona, Enrico Nardi

Atomic electron motion is responsible for well-studied effects observed in low-energy (MeV-scale) processes. Recently, interest in this phenomenon has also emerged within the high-…

hep-ph2025★ 1 cited

Combined Evidence for the Boson After PADME Results on Resonant Production in Positron Annihilation

Fernando Arias-Aragón, Giovanni Grilli di Cortona, Enrico Nardi +1

The Positron Annihilation into Dark Matter Experiment at the Laboratori Nazionali di Frascati has reported an excess of final-state events from positron annihilation on fi…

hep-ph2025

Atoms as Electron Accelerators for New Physics Searches

Fernando Arias-Aragón, Giovanni Grilli di Cortona, Enrico Nardi +1

Due to Heisenberg's uncertainty principle, atomic electrons localized around the nucleus exhibit a characteristic momentum distribution that, in elements with high atomic number, r…

hep-ph2024

Atoms as electron accelerators for measuring the hadrons cross section

Fernando Arias-Aragón, Luc Darmé, Giovanni Grilli di Cortona +1

The hadronic vacuum polarization contribution to can be determined via dispersive methods from hadrons data. We propose a novel approach to measure the hadro…

hep-ph2024

Production of dark sector particles via resonant positron annihilation on atomic electrons

Fernando Arias-Aragón, Luc Darmé, Giovanni Grilli di Cortona +1

Resonant positron annihilation on atomic electrons provides a powerful method to search for light new particles coupled to . Reliable estimates of production rates require…

hep-ph2022★ 46 cited

QED Meson Description of the X17 and Other Anomalous Particles

Cheuk-Yin Wong

The X17 particle, the E38 particle, and the anomalous soft photons are anomalous particles because they do not appear to belong to any known Standard Model families. We propose a Q…