Cryogenic Double Beta Decay Experiments: CUORE and CUORICINO

Cryogenic bolometers, with their excellent energy resolution, flexibility in material, and availability in high purity, are excellent detectors for the search for neutrinoless double beta decay. Kilogram-size single crystals of TeO2 are utilized in CUORICINO for an array with a total detector mass of 40.7 kg. CUORICINO currently sets the most stringent limit on the halflife of 130Te of (90% C.L.), corresponding to a limit on the effective Majorana neutrino mass in the range of . Based on technology developed for CUORICINO and its predecessors, CUORE is a next-generation experiment designed to probe 〈mν〉 in the range of 10 – 100 meV. Latest results from CUORICINO and overview of the progress and current status of CUORE are presented.