Title: First Search for Bosonic Superweakly Interacting Massive Particles with Masses up to 1 MeV/c2 with GERDA
Authors: AGOSTINI M.BAKALYAROV A.M.BALATA M.BARABANOV I.BAUDIS L.BAUER C.BELLOTTI E.BELOGUROV S.BETTINI A.BEZRUKOV L.BOROWICZ D.BOSSIO E.BOTHE V.BRUDANIN V.BRUGNERA R.CALDWELL A.CATTADORI CCHERNOGOROV A.COMELLATO T.D'ANDREA V.DEMIDOVA E.V.DI MARCO N.DOROSHKEVICH E.EGOROV V.FISCHER F.FOMINA M.GANGAPSHEV A.GARFAGNINI A.GOOCH C.GRABMAYR P.GURENTSOV V.GUSEV K.HAKENMÜLLER J.HEMMER S.HILLER R.HOFMANN W.HULT MIKAELINZHECHIK L.JANICSKO J.JOCHUM J.JUNKER M.KAZALOV V.KERMAÏDIC Y.KHUSHBAKHT H.KIHM T.KIRPICHNIKOV IKLIMENKO A.KNEISSL R.KNOEPFLE K.T.KOCHETOV O.KORNOUKHOV V.KRAUSE P.KUZMINOV V.LAUBENSTEIN M.LAZZARO A.LINDNER M.LIPPI I.LUBASHEVSKY A.LUBSANDORZHIEV B.LUTTER GUILLAUMEMACOLINO C.MAJOROVITS B.MANESCHG W.MILORADOVIC M.MINGAZHEVA R.MISIASZEK M.MOSEEV P.NEMCHENOK I.PANAS K.PANDOLA L.PELCZAR K.PERTOLDI L.PISERI P.PULLIA A.RANSOM C.RAUSCHER L.RIBOLDI S.RUMYANTSEVA N.SADA C.SALAMIDA F.SCHOENERT S.SCHREINER J.SCHÜTT M.SCHÜTZ A. K.SCHULZ O.SCHWARZ M.SCHWINGENHEUER B.SELIVANENKO O.SHEVCHIK E.SHIRCHENKO M.SIMGEN H.SMOLNIKOV A.STUKOV D.VASENKO A. A.VERESNIKOVA A.VIGNOLI C.VON STURM K.WESTER T.WIESINGER C.WOJCIK M.YANOVICH E.ZATSCHLER B.ZHITNIKOV I.ZHUKOV S. V.ZINATULINA D.ZSCHOCKE A.ZSIGMOND A. J.ZUBER K.ZUZEL G.
Citation: PHYSICAL REVIEW LETTERS vol. 125 p. 011801 (6 pp)
Publisher: AMER PHYSICAL SOC
Publication Year: 2020
JRC N°: JRC120926
ISSN: 0031-9007 (online)
URI: https://publications.jrc.ec.europa.eu/repository/handle/JRC120926
DOI: 10.1103/PhysRevLett.125.011801
Type: Articles in periodicals and books
Abstract: We present the first search for bosonic super-WIMPs as keV-scale dark matter candidates performed with the Gerda experiment. Gerda is a neutrinoless double-beta decay experiment which operates high-purity germanium detectors enriched in 76Ge in an ultra-low background environment at the Laboratori Nazionali del Gran Sasso (LNGS) of INFN in Italy. Searches were performed for pseudoscalar and vector particles in the mass region from 60 keV/c2 to 1 MeV/c2. No evidence for a dark matter signal was observed, and the most stringent constraints on the couplings of super-WIMPs with masses above 120 keV/c2 have been set. As an example, at a mass of 150 keV/c2 the most stringent direct limits on the dimensionless couplings of axion-like particles and dark photons to electrons of g_ae < 3.10^-12 and alpha'/alpha < 6.5.10^-24 at 90% credible interval, respectively, were obtained.
JRC Directorate:Nuclear Safety and Security

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