The matrix optimum filter for low temperature detectors dead-time reduction Matteo Borghesi, Marco Faverzani, Cecilia Ferrari, Elena Ferri, Andrea Giachero, Angelo Nucciotti and Luca Origo Eur. Phys. J. C, 82 5 (2022) 421 Published online: 10 May 2022 DOI: 10.1140/epjc/s10052-022-10379-w