Search for exotic physics in double-β decays with GERDA Phase II

The GERDA collaboration

doi:10.1088/1475-7516/2022/12/012

Search for exotic physics in double-β decays with GERDA Phase II

The GERDA collaboration

Chair of Experimental Astroparticle Physics

University College London
Physik-Institut der Universität Zürich
National Research Centre "Kurchatov Institute"
Laboratori Nazionali del Gran Sasso
Institute for Nuclear Research of the Russian Academy of Sciences
Max-Planck-Institut für Kernphysik
Moscow Institute of Physics and Technology
University of Padova
Dipartimento di Fisica 'G. Galilei' and INFN
Technical University of Munich
Max-Planck-Institut für Physik
Sezione INFN di Milano Bicocca
Universitá di L'Aquila
Gran Sasso Science Institute
Joint Inst. for Nuclear Research
University of Tübingen
European Commission
International University for Nature
Jagiellonian University
INFN-LNS
University of Milan
Technische Universität Dresden

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

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 å⁽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.

Original language	English
Article number	012
Journal	Journal of Cosmology and Astroparticle Physics
Volume	2022
Issue number	12
DOIs	https://doi.org/10.1088/1475-7516/2022/12/012
State	Published - 1 Dec 2022

Keywords

double beta decay
neutrino properties
particle physics - cosmology connection

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10.1088/1475-7516/2022/12/012

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@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",

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TY - JOUR

T1 - Search for exotic physics in double-β decays with GERDA Phase II

AU - The GERDA collaboration

AU - Agostini, M.

AU - Alexander, A.

AU - Araujo, G.

AU - Bakalyarov, A. M.

AU - Balata, M.

AU - Barabanov, I.

AU - Baudis, L.

AU - Bauer, C.

AU - Belogurov, S.

AU - Bettini, A.

AU - Bezrukov, L.

AU - Biancacci, V.

AU - Bossio, E.

AU - Bothe, V.

AU - Brugnera, R.

AU - Caldwell, A.

AU - Calgaro, S.

AU - Cattadori, C.

AU - Chernogorov, A.

AU - Comellato, T.

AU - D’Andrea, V.

AU - Demidova, E. V.

AU - Di Giacinto, A.

AU - Di Marco, N.

AU - Doroshkevich, E.

AU - Fischer, F.

AU - Fomina, M.

AU - Gangapshev, A.

AU - Garfagnini, A.

AU - Gooch, C.

AU - Grabmayr, P.

AU - Gurentsov, V.

AU - Gusev, K.

AU - Hakenmüller, J.

AU - Hemmer, S.

AU - Hofmann, W.

AU - Huang, J.

AU - Hult, M.

AU - Inzhechik, L. V.

AU - Janicskó Csáthy, J.

AU - Jochum, J.

AU - Junker, M.

AU - Kazalov, V.

AU - Kermaïdic, Y.

AU - Khushbakht, H.

AU - Kihm, T.

AU - Kilgus, K.

AU - Kirpichnikov, I. V.

AU - Klimenko, A.

AU - Schönert, S.

PY - 2022/12/1

Y1 - 2022/12/1

N2 - 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 å(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.

AB - 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 å(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.

KW - double beta decay

KW - neutrino properties

KW - particle physics - cosmology connection

UR - https://www.scopus.com/pages/publications/85144799290

U2 - 10.1088/1475-7516/2022/12/012

DO - 10.1088/1475-7516/2022/12/012

M3 - Article

AN - SCOPUS:85144799290

SN - 1475-7516

VL - 2022

JO - Journal of Cosmology and Astroparticle Physics

JF - Journal of Cosmology and Astroparticle Physics

IS - 12

M1 - 012

ER -

Search for exotic physics in double-β decays with GERDA Phase II

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Keywords

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