5 papers
Same-sign dimuon probe of charged lepton flavor violation at electron-photon colliders
Zhong Zhang, Yu Zhang, Zeren Simon Wang
Observation of charged lepton flavor violation would constitute unambiguous evidence for physics beyond the Standard Model (SM). We identify a previously unexplored same-sign dimuo…
Probing dark-state electromagnetic form factors at future linear electron-positron colliders with polarized beams
Zhong Zhang, Yu Zhang, Zeren Simon Wang +1
We study the electromagnetic form factors of electrically neutral dark-sector particles in this paper. Concretely speaking, we focus on operators that can lead to interactions of f…
Neutrino Theory in the Precision Era
Asmaa Abada, Gabriela Barenboim, Toni Bertólez-MartÃnez +76
This document summarises discussions on future directions in theoretical neutrino physics, which are the outcome of a neutrino theory workshop held at CERN in February 2025. The st…
Relaxing Limits from Big Bang Nucleosynthesis on Heavy Neutral Leptons with Axion-like Particles
Frank F. Deppisch, Tomás E. Gonzalo, Chayan Majumdar +1
Heavy neutral leptons (HNLs) are constrained by requirements of Big Bang Nucleosynthesis (BBN) as their decays significantly impact the formation of the primordial elements. We pro…
Probing the Nature of Heavy Neutral Leptons in Direct Searches and Neutrinoless Double Beta Decay
Patrick D. Bolton, Frank F. Deppisch, Mudit Rai +1
Heavy Neutral Leptons (HNLs) are a popular extension of the Standard Model to explain the lightness of neutrino masses and the matter-antimatter asymmetry through leptogenesis. Fut…