4 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-Martínez +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…