58 citations · 259 across the 10 of their papers we have counts for
10 papers
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…
UFO 2.0 -- The Universal Feynman Output format
Luc Darmé, Céline Degrande, Claude Duhr +16
We present an update of the Universal FeynRules Output model format, commonly known as the UFO format, that is used by several automated matrix-element generators and high-energy p…
The axion flavour connection
Luc Darmé, Enrico Nardi, Clemente Smarra
A local flavour symmetry acting on the quarks of the Standard Model can automatically give rise to an accidental global which remains preserved from sources of explicit brea…
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…
The muon g-2 anomaly confronts new physics in and final states scattering
Luc Darmé, Giovanni Grilli di Cortona, Enrico Nardi
The 4.2 discrepancy between the standard model prediction for the muon anomalous magnetic moment and the experimental result is accompanied by other anomalies. A crucial i…
Top-philic heavy resonances in four-top final states and their EFT interpretation
Luc Darmé, Benjamin Fuks, Fabio Maltoni
With an expected rate of about one event per 100,000 top-quark pairs, four top-quark final states very rarely arise at the LHC. Though scarce, they offer a unique window onto top-q…
Invisible decays of axion-like particles: constraints and prospects
Luc Darmé, Federica Giacchino, Enrico Nardi +1
Axion-like particles (ALPs) can provide a portal to new states of a dark sector. We study the phenomenology of this portal when the ALP mainly decays invisibly, while its interacti…
Selective enhancement of the QCD axion couplings
Luc Darmé, Luca Di Luzio, Maurizio Giannotti +1
We present a mechanism wherein the QCD axion coupling to nucleons, photons, or electrons, can be enhanced selectively without increasing the axion mass. We focus in particular on t…
Signatures of dark Higgs boson in light fermionic dark matter scenarios
Luc Darmé, Soumya Rao, Leszek Roszkowski
Thermal dark matter scenarios based on light (sub-GeV) fermions typically require the presence of an extra dark sector containing both a massive dark photon along with a dark Higgs…
Cornering sgluons with four-top-quark events
Luc Darmé, Benjamin Fuks, Mark Goodsell
The existence of colour-octet scalar states, often dubbed sgluons, is predicted in many extensions of the Standard Model of particle physics, such as supersymmetric realisations fe…