Two neutrino double β decay can create irremovable background even in high energy resolution detectors searching for neutrinoless double β decay due to random coincidence of 2ν2β events in case of poor time resolution. Possibilities to suppress this background in cryogenic scintillating bolometers are discussed. It is shown that the present bolometric detector technologies enable to control this form of background at the level required to explore the inverted hierarchy of the neutrino mass pattern, including the case of bolometers searching for the neutrinoless double β decay of 100Mo, which is characterized by a relatively short two neutrino double β decay half-life.
@article{arxiv.1301.4248,
title = {Random coincidence of $2\nu2\beta$ decay events as a background source in bolometric $0\nu2\beta$ decay experiments},
author = {D. M. Chernyak and F. A. Danevich and A. Giuliani and E. Olivieri and M. Tenconi and V. I. Tretyak},
journal= {arXiv preprint arXiv:1301.4248},
year = {2013}
}