134 citations · 202 across the 17 of their papers we have counts for
8 papers · 1 filter
On the decay of a light spinless particle into two photons
Ferruccio Feruglio, Gabriele Levati, Robert Ziegler
We analyze the effective couplings of a light, spinless, gauge-singlet particle to on-shell photons. Starting from the most general theory at the electroweak scale, which allow…
Light new physics and the lepton dipole moments
Martin Hoferichter, Gabriele Levati
Testing New-Physics (NP) scenarios that couple predominantly to the third generation is notoriously difficult experimentally, as exemplified by comparing limits for the lepton…
MuCol Milestone Report No. 7: Consolidated Parameters
Rebecca Taylor, Antoine Chancé, Dario Augusto Giove +459
This document is comprised of a collection of consolidated parameters for the key parts of the muon collider. These consolidated parameters follow on from the October 2024 Prelimin…
Light new physics and the lepton dipole moments: prospects at Belle II
Martin Hoferichter, Gabriele Levati
While electron and muon dipole moments are well-established precision probes of physics beyond the standard model, it is notoriously challenging to test realistic new-physics (NP)…
Positivity and partial wave unitarity bounds on ALP theories via amplitude methods
Luigi C. Bresciani, Gabriele Levati, Paride Paradisi
We derive the complete set of partial wave unitarity bounds on the most general Axion-Like Particle (ALP) effective interactions up to dimension 8 in the limit of large center-of-m…
The anomalous magnetic moment of the muon in the Standard Model: an update
R. Aliberti, T. Aoyama, E. Balzani +232
We present the current Standard Model (SM) prediction for the muon anomalous magnetic moment, , updating the first White Paper (WP20) [1]. The pure QED and electroweak contrib…
The Muon Collider
Carlotta Accettura, Simon Adrian, Rohit Agarwal +450
Muons offer a unique opportunity to build a compact high-energy electroweak collider at the 10 TeV scale. A Muon Collider enables direct access to the underlying simplicity of the…
Amplitudes and partial wave unitarity bounds
Luigi C. Bresciani, Gabriele Levati, Paride Paradisi
We develop a formalism, based on spinor-helicity techniques, to generalize the formulation of partial wave unitarity bounds. We discuss unitarity bounds for (with $N,M \g…