Скачать или смотреть "Colliding light, tau g–2, and axion dark matter," Jessie Liu, University of Cambridge

Title: Colliding light, tau g–2, and axion dark matter
Abstract: Precision measurements of electromagnetic moments are unique windows to new physics. The muon anomalous magnetic moment (g–2) exhibits tantalising tensions with the Standard Model. But what about its heavier sibling, the tau lepton? Tau g–2 remains shrouded in mystery due to its short lifetime. Recently, CMS and ATLAS pioneered groundbreaking measurements of tau g–2 by observing tau pairs created via photon collisions in LHC heavy-ion data. Meanwhile, resolving why the neutron lacks an electric dipole motivates the axion. Novel search strategies include the Broadband Reflector Experiment for Axion Detection (BREAD) proposal at Fermilab. BREAD plans to open unprecedented sensitivity to axion dark matter above microwave frequencies that has long eluded conventional haloscopes. These creative ideas rely on interdisciplinary innovations across nuclear physics, astronomy and quantum technology.