@article{b1f99b1c07714cb8afc17e89e793a7d6,
title = "Search for exotic physics in double-β decays with GERDA Phase II",
abstract = "A search for Beyond the Standard Model double-β decay modes of 76Ge has been performed with data collected during the Phase II of the GERmanium Detector Array (Gerda) experiment, located at the Laboratori Nazionali del Gran Sasso of INFN (Italy). Improved limits on the decays involving Majorons have been obtained, compared to previous experiments with 76Ge, with half-life values on the order of 1023 yr. For the first time with 76Ge, limits on Lorentz invariance violation effects in double-β decay have been obtained. The isotropic coefficient {\aa}(3) of , which embeds Lorentz violation in double-β decay, has been constrained at the order of 10-6 GeV. We also set the first experimental limits on the search for light exotic fermions in double-β decay, including sterile neutrinos.",
keywords = "double beta decay, neutrino properties, particle physics - cosmology connection",
author = "{The GERDA collaboration} and M. Agostini and A. Alexander and G. Araujo and Bakalyarov, {A. M.} and M. Balata and I. Barabanov and L. Baudis and C. Bauer and S. Belogurov and A. Bettini and L. Bezrukov and V. Biancacci and E. Bossio and V. Bothe and R. Brugnera and A. Caldwell and S. Calgaro and C. Cattadori and A. Chernogorov and T. Comellato and V. D{\textquoteright}Andrea and Demidova, {E. V.} and {Di Giacinto}, A. and {Di Marco}, N. and E. Doroshkevich and F. Fischer and M. Fomina and A. Gangapshev and A. Garfagnini and C. Gooch and P. Grabmayr and V. Gurentsov and K. Gusev and J. Hakenm{\"u}ller and S. Hemmer and W. Hofmann and J. Huang and M. Hult and Inzhechik, {L. V.} and {Janicsk{\'o} Cs{\'a}thy}, J. and J. Jochum and M. Junker and V. Kazalov and Y. Kerma{\"i}dic and H. Khushbakht and T. Kihm and K. Kilgus and Kirpichnikov, {I. V.} and A. Klimenko and S. Sch{\"o}nert",
note = "Publisher Copyright: {\textcopyright} 2022 The Author(s).",
year = "2022",
month = dec,
day = "1",
doi = "10.1088/1475-7516/2022/12/012",
language = "English",
volume = "2022",
journal = "Journal of Cosmology and Astroparticle Physics",
issn = "1475-7516",
publisher = "IOP Publishing Ltd.",
number = "12",
}