154GD 154GD A:T1/2:XUNDL-10 2025Le11 202509 154GD c Compiled (unevaluated) dataset from 2025Le11: 154GD c Eur. Phys. J C 85, 659 (2025) 154GD c Compiled by E.A. McCutchan (NNDC,BNL) July 29 ,2025 154GD c Gd{-2}(SO{-4}){-3} 8H{-2}O powder with a mass of 4.78 kg. 154GD2c Measured at Boulby Underground Laboratory resulting in 154GD3c 15.9 kg y of exposure. Detectors were p-type coaxial 154GD4c with masses of 2.0 and 3.2 kg. 154GD5c Deduced T{-1/2} limit on |a decay. 154GD L 0.0 0+ 1.0E20 Y GT 154GD cL T$for |a decay to first excited 2+ level in {+150}Sm 154GD2cL (2025Le11) at 90% confidence limit.