The MEG II experiment has collected physics data since 2021 to search for the lepton-flavor-violating muon decay, $\mu^+ \to e^+\gamma$, with a target sensitivity of $6 \times 10^{-14}$. The latest result, based on the first two years of data, has achieved the most sensitive search to date. No signal excess was found, and the most stringent upper limit on the branching ratio was set to $1.5...
The PIONEER experiment aims to perform precision tests of lepton flavor universality through measurements of rare pain decays using a stopped-pion technique. Achieving the targeted sensitivity requires excellent control of systematic effects, high energy and timing resolution, and robust pile-up rejection under high-rate conditions.
Liquid xenon calorimetry offers attractive performance...
Underground liquid xenon time-projection chambers (TPCs) offer a low-background environment, a key requirement to enable sensitive searches for possible dark matter interactions. Additionally, these same conditions make xenon TPCs excellent for the detection of solar neutrino events down to and even below the ~1 keV electron-equivalent scale. In this talk I describe the program of solar...
