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Latest Results from the Heidelberg-Moscow Double Beta Decay Experiment

New results for the double beta decay of 76Ge are presented. They are extracted from Data obtained with the HEIDELBERG-MOSCOW, which operates five enriched 76Ge detectors in an extreme low-level environment in the GRAN SASSO. The two…

High Energy Physics - Phenomenology · Physics 2008-11-26 H. V. Klapdor-Kleingrothaus , A. Dietz , L. Baudis , G. Heusser , I. V. Krivosheina , S. Kolb , B. Majorovits , H. Paes , H. Strecker , V. Alexeev , A. Balysh , A. Bakalyarov , S. T. Belyaev , V. I. Lebedev , S. Zhukov

Nuclear deformation and neutrinoless double-$\beta $ decay of $^{94,96}$Zr, $^{98,100}$Mo, $^{104}$Ru, $^{110}$Pd, $^{128,130}$Te and $^{150}$Nd nuclei in mass mechanism

The $(\beta ^{-}\beta ^{-})_{0\nu}$ decay of $^{94,96}$Zr, $^{98,100}$Mo, $^{104}$Ru, $^{110}$Pd, $^{128,130}$Te and $^{150}$Nd isotopes for the $0^{+}\to 0^{+}$ transition is studied in the Projected Hartree-Fock-Bogoliubov framework. In…

Nuclear Theory · Physics 2009-11-13 K. Chaturvedi , R. Chandra , P. K. Rath , P. K. Raina , J. G. Hirsch

Optimized Two-Baseline Beta-Beam Experiment

We propose a realistic Beta-Beam experiment with four source ions and two baselines for the best possible sensitivity to theta_{13}, CP violation and mass hierarchy. Neutrinos from 18Ne and 6He with Lorentz boost gamma=350 are detected in a…

High Energy Physics - Phenomenology · Physics 2009-12-15 Sandhya Choubey , Pilar Coloma , Andrea Donini , Enrique Fernandez-Martinez

Search for Neutrinoless Double-Beta Decay of $^{76}$Ge with a Natural Broad Energy Germanium Detector

A natural broad energy germanium (BEGe) detector is operated in the China Jinping Underground Laboratory (CJPL) for a feasibility study of building the next generation experiment of the neutrinoless double-beta (0{$\nu\beta\beta$}) decay of…

Nuclear Experiment · Physics 2022-08-19 CDEX collaboration , W. H. Dai , H. Ma , Q. Yue , Z. She , K. J. Kang , Y. J. Li , M. Agartioglu , H. P. An , J. P. Chang , Y. H. Chen , J. P. Cheng , Z. Deng , C. H. Fang , X. P. Geng , H. Gong , Q. J. Guo , X. Y. Guo , L. He , S. M. He , J. W. Hu , H. X. Huang , T. C. Huang , H. T. Jia , X. Jiang , H. B. Li , J. M. Li , J. Li , Q. Y. Li , R. M. J. Li , X. Q. Li , Y. L. Li , Y. F. Liang , B. Liao , F. K. Lin , S. T. Lin , S. K. Liu , Y. D. Liu , Y. Liu , Y. Y. Liu , Z. Z. Liu , Y. C. Mao , Q. Y. Nie , J. H. Ning , H. Pan , N. C. Qi , J. Ren , X. C. Ruan , K. Saraswat , V. Sharma , M. K. Singh , T. X. Sun , C. J. Tang , W. Y. Tang , Y. Tian , G. F. Wang , L. Wang , Q. Wang , Y. Wang , Y. X. Wang , H. T. Wong , S. Y. Wu , Y. C. Wu , H. Y. Xing , R. Xu , Y. Xu , T. Xue , Y. L. Yan , L. T. Yang , C. H. Yeh , N. Yi , C. X. Yu , H. J. Yu , J. F. Yue , M. Zeng , Z. Zeng , B. T. Zhang , F. S. Zhang , L. Zhang , Z. H. Zhang , Z. Y. Zhang , K. K. Zhao , M. G. Zhao , J. F. Zhou , Z. Y. Zhou , J. J. Zhu

Total absorption $\gamma$-ray spectroscopy of the $\beta$ decays of $^{96\text{gs,m}}$Y

The $\beta$ decays of the ground state (gs) and isomeric state (m) of $^{96}$Y have been studied with the total absorption $\gamma$-ray spectroscopy technique at the Ion Guide Isotope Separator On-Line facility. The separation of the…

Nuclear Experiment · Physics 2022-07-27 V. Guadilla , L. Le Meur , M. Fallot , J. A. Briz , M. Estienne , L. Giot , A. Porta , A. Cucoanes , T. Shiba , A. -A. Zakari-Issoufou , A. Algora , J. L. Tain , J. Agramunt , D. Jordan , M. Monserrate , A. Montaner-Pizá , E. Nácher , S. E. A. Orrigo , B. Rubio , E. Valencia , J. Äystö , T. Eronen , D. Gorelov , J. Hakala , A. Jokinen , A. Kankainen , V. Kolhinen , J. Koponen , I. Moore , H. Penttilä , I. Pohjalainen , J. Reinikainen , M. Reponen , S. Rinta-Antila , K. Rytkönen , V. Sonnenschein , A. Voss , L. M. Fraile , V. Vedia , E. Ganioğlu , W. Gelletly , M. Lebois , J. N. Wilson , T. Martinez , A. A. Sonzogni

Electron spectral shape of the third-forbidden $\beta$-decay of $^{87}$Rb measured using a Rb$_2$ZrCl$_6$ crystal scintillator

In recent years, interest in experimental studies of $\beta$-decay electron spectra -- often referred to as $\beta$ spectra -- has been growing. This is particularly true for $\beta$ transitions where the electron spectra are sensitive to…

Nuclear Experiment · Physics 2025-12-25 P. Belli , R. Bernabei , F. Cappella , V. Caracciolo , R. Cerulli , A. Incicchitti , A. Leoncini , V. Merlo , S. S. Nagorny , V. V. Nahorna , S. Nisi , P. Wang , J. Suhonen , M. Ramalho , J. Kostensalo

$\alpha$ + $^{92}$Zr cluster structure in $^{96}$Mo

In the evaluation of the half-life of the neutrinoless double-$\beta$ decay ($0\nu\beta\beta$) of a doubly closed-subshell nucleus $^{96}$Zr, the structure of the nucleus $^{96}$Mo is essentially important. The $\alpha$-clustering aspects…

Nuclear Theory · Physics 2023-04-03 S. Ohkubo , Y. Hirabayashi

The Majorana Demonstrator's Search for Double-Beta Decay of $^{76}$Ge to Excited States of $^{76}$Se

The Majorana Demonstrator is a neutrinoless double-beta decay search consisting of a low-background modular array of high-purity germanium detectors, $\sim2/3$ of which are enriched to 88\% in $^{76}$Ge. The experiment is also searching for…

Nuclear Experiment · Physics 2021-02-26 I. J. Arnquist , F. T. Avignone , A. S. Barabash , C. J. Barton , F. E. Bertrand , E. Blalock , B. Bos , M. Busch , M. Buuck , T. S. Caldwell , Y-D. Chan , C. D. Christofferson , P. -H. Chu , M. L. Clark , C. Cuesta , J. A. Detwiler , A. Drobizhev , T. R. Edwards , D. W. Edwins , Yu. Efremenko , H. Ejiri , S. R. Elliott , T. Gilliss , G. K. Giovanetti , M. P. Green , J. Gruszko , I. S. Guinn , V. E. Guiseppe , C. R. Haufe , R. Henning , D. Hervas Aguilar , E. W. Hoppe , A. Hostiuc , M. F. Kidd , I. Kim , R. T. Kouzes , A. M. Lopez , J. M. López-Castaño , E. L. Martin , R. D. Martin , R. Massarczyk , S. J. Meijer , S. Mertens , J. Myslik , T. K. Oli , G. Othman , L. S. Paudel , W. Pettus , A. W. P. Poon , D. C. Radford , A. L. Reine , K. Rielage , N. W. Ruof , B. Saykı , M. J. Stortini , D. Tedeschi , R. L. Varner , S. Vasilyev , J. F. Wilkerson , C. Wiseman , W. Xu , C. -H. Yu , B. X. Zhu

Search for double beta decay of $^{136}$Ce and $^{138}$Ce with HPGe gamma detector

Search for double $\beta$ decay of $^{136}$Ce and $^{138}$Ce was realized with 732 g of deeply purified cerium oxide sample measured over 1900 h with the help of an ultra-low background HPGe $\gamma$ detector with a volume of 465 cm$^3$ at…

Nuclear Experiment · Physics 2014-10-23 P. Belli , R. Bernabei , R. S. Boiko , F. Cappella , R. Cerulli , F. A. Danevich , A. Incicchitti , B. N. Kropivyansky , M. Laubenstein , D. V. Poda , O. G. Polischuk , V. I. Tretyak

Fast-timing study of $^{81}$Ga from the $\beta$ decay of $^{81}$Zn

The $\beta^{-}$ decay of $^{81}$Zn to the neutron magic $N=50$ nucleus $^{81}$Ga, with only three valence protons with respect to $^{78}$Ni, was investigated. The study was performed at the ISOLDE facility at CERN by means of $\gamma$…

Nuclear Experiment · Physics 2020-08-26 V. Paziy , L. M. Fraile , H. Mach , B. Olaizola , G. S. Simpson , A. Aprahamian , C. Bernards , J. A. Briz , B. Bucher , C. J. Chiara , Z. Dlouhý , I. Gheorghe , D. Ghiţǎ , P. Hoff , J. Jolie , U. Köster , W. Kurcewicz , R. Licǎ , N. Mǎrginean , R. Mǎrginean , J. -M. Régis , M. Rudigier , T. Sava , M. Stǎnoiu , L. Stroe , W. B. Walters

Beta decay of the very neutron-deficient $^{60}$Ge and $^{62}$Ge nuclei

We report here the results of a study of the $\beta$ decay of the proton-rich Ge isotopes, $^{60}$Ge and $^{62}$Ge, produced in an experiment at the RIKEN Nishina Center. We have improved our knowledge of the half-lives of $^{62}$Ge…

Nuclear Experiment · Physics 2022-02-16 S. E. A. Orrigo , B. Rubio , W. Gelletly , P. Aguilera , A. Algora , A. I. Morales , J. Agramunt , D. S. Ahn , P. Ascher , B. Blank , C. Borcea , A. Boso , R. B. Cakirli , J. Chiba , G. de Angelis , G. de France , F. Diel , P. Doornenbal , Y. Fujita , N. Fukuda , E. Ganioğlu , M. Gerbaux , J. Giovinazzo , S. Go , T. Goigoux , S. Grévy , V. Guadilla , N. Inabe , G. Kiss , T. Kubo , S. Kubono , T. Kurtukian-Nieto , D. Lubos , C. Magron , F. Molina , A. Montaner-Pizá , D. Napoli , D. Nishimura , S. Nishimura , H. Oikawa , Y. Shimizu , C. Sidong , P. -A. Söderström , T. Sumikama , H. Suzuki , H. Takeda , Y. Takei , M. Tanaka , P. Vi , J. Wu , S. Yagi

Results of a search for neutrinoless double-beta decay using the COBRA demonstrator

Neutrinoless double-$\beta$ decay ($0\nu\beta\beta$ decay) is a hypothetical process that can occur if the neutrino is its own antiparticle. The COBRA collaboration operates a demonstrator to search for these decays at the Laboratori…

Nuclear Experiment · Physics 2016-11-30 Joachim Ebert , Matthew Fritts , Daniel Gehre , Claus Goessling , Caren Hagner , Nadine Heidrich , Reiner Klingenberg , Kevin Kroeninger , Christian Nitsch , Christian Oldorf , Thomas Quante , Silke Rajek , Henning Rebber , Katja Rohatsch , Jan Tebruegge , Robert Temminghoff , Robert Theinert , Jan Timm , Bjoern Wonsak , Stefan Zatschler , Kai Zuber

Search for $2\beta$ decay of $^{106}$Cd with enriched $^{106}$CdWO$_4$ crystal scintillator in coincidence with four HPGe detectors

A radiopure cadmium tungstate crystal scintillator, enriched in $^{106}$Cd to 66%, with mass of 216 g ($^{106}$CdWO$_4$), was used to search for double beta decay processes in $^{106}$Cd in coincidence with four ultra-low background high…

Nuclear Experiment · Physics 2016-04-14 P. Belli , R. Bernabei , V. B. Brudanin , F. Cappella , V. Caracciolo , R. Cerulli , D. M. Chernyak , F. A. Danevich , S. d'Angelo , A. Di Marco , A. Incicchitti , M. Laubenstein , V. M. Mokina , D. V. Poda , O. G. Polischuk , V. I. Tretyak , I. A. Tupitsyna

Double-beta decay matrix elements for Ge-76

Double-beta decay matrix elements (ME) for $^{76}Ge$ are calculated with different quasi random phase approximation (QRPA)-based methods. First, the ME for the two-neutrino mode are computed using two choices for the single particle (s.p.)…

Nuclear Theory · Physics 2009-11-06 S. Stoica , H. V. Klapdor-Kleingrothaus

$\beta$-decay of N=126 isotones for the r-process nucleosynthesis

The $\beta$-decay properties of nuclei with neutron number $N = 126$ is investigated in this paper. Two different versions of the proton-neutron quasi particle random phase (pn-QRPA) model were employed to compute $\beta$-decay rates and…

Nuclear Theory · Physics 2025-04-04 Jameel-Un Nabi , Necla Cakmak , Asim Ullah , Asad Ullah Khan

Search for the Radiative Decays B -> rho gamma and B0 -> omega gamma

A search for the exclusive radiative decays B --> rho(770) gamma and B0 --> omega(782) gamma is performed on a sample of about 84\times 10^{6} B\bar B events collected by the BaBar detector at the PEP-II asymmetric-energy e+e- storage ring.…

High Energy Physics - Experiment · Physics 2008-11-26 B. Aubert

$\beta$-decay properties for neutron-rich Kr-Tc isotopes from deformed pn-QRPA calculations with realistic forces

In this work we studied $\beta$-decay properties for deformed neutron-rich nuclei in the region Z=36-43. We use the deformed pn-QRPA methods with the realistic CD-Bonn forces, and include both the Gamow-Teller and first-forbidden types of…

Nuclear Theory · Physics 2015-02-10 Dong-Liang Fang , B. Alex Brown , Toshio Suzuki

$2\nu\beta\beta$ decay of $^{76}$Ge into excited states with GERDA Phase I

Two neutrino double beta decay of $^{76}$Ge to excited states of $^{76}$Se has been studied using data from Phase I of the GERDA experiment. An array composed of up to 14 germanium detectors including detectors that have been isotopically…

High Energy Physics - Experiment · Physics 2016-01-28 M. Agostini , M. Allardt , A. M. Bakalyarov , M. Balata , I. Barabanov , N. Barros , L. Baudis , C. Bauer , N. Becerici-Schmidt , E. Bellotti , S. Belogurov , S. T. Belyaev , G. Benato , A. Bettini , L. Bezrukov , T. Bode , D. Borowicz , V. Brudanin , R. Brugnera , D. Budjáš , A. Caldwell , C. Cattadori , A. Chernogorov , V. D'Andrea , E. V. Demidova , A. di Vacri , A. Domula , E. Doroshkevich , V. Egorov , R. Falkenstein , O. Fedorova , K. Freund , N. Frodyma , A. Gangapshev , A. Garfagnini , C. Gooch , P. Grabmayr , V. Gurentsov , K. Gusev , A. Hegai , M. Heisel , S. Hemmer , G. Heusser , W. Hofmann , M. Hult , L. V. Inzhechik , J. Janicskó Csáthy , J. Jochum , M. Junker , V. Kazalov , T. Kihm , I. V. Kirpichnikov , A. Kirsch , A. Klimenko , K. T. Knöpfle , O. Kochetov , V. N. Kornoukhov , V. V. Kuzminov , M. Laubenstein , A. Lazzaro , V. I. Lebedev , B. Lehnert , H. Y. Liao , M. Lindner , I. Lippi , A. Lubashevskiy , B. Lubsandorzhiev , G. Lutter , C. Macolino , B. Majorovits , W. Maneschg , E. Medinaceli , Y. Mi , M. Misiaszek , P. Moseev , I. Nemchenok , D. Palioselitis , K. Panas , L. Pandola , K. Pelczar , A. Pullia , S. Riboldi , N. Rumyantseva , C. Sada , M. Salathe , C. Schmitt , B. Schneider , J. Schreiner , O. Schulz , B. Schwingenheuer , S. Schönert , A-K. Schütz , O. Selivanenko , M. Shirchenko , H. Simgen , A. Smolnikov , L. Stanco , M. Stepaniuk , C. A. Ur , L. Vanhoefer , A. A. Vasenko , A. Veresnikova , K. von Sturm , V. Wagner , M. Walter , A. Wegmann , T. Wester , H. Wilsenach , M. Wojcik , E. Yanovich , P. Zavarise , I. Zhitnikov , S. V. Zhukov , D. Zinatulina , K. Zuber , G. Zuzel

Search for triple and quadruple beta decay of $^{150}$Nd

Triple beta decay of $^{150}$Nd to the ground and excited states of $^{150}$Eu and quadruple beta decay of $^{150}$Nd to the excited states of $^{150}$Gd have been studied using a 400 cm$^3$ low-background HPGe detector and an external…

Nuclear Experiment · Physics 2019-10-23 A. S. Barabash , Ph. Hubert , A. Nachab , V. I. Umatov

NEMO 3 double beta decay experiment: latest results

The double beta decay experiment NEMO~3 has been taking data since February 2003. The aim of this experiment is to search for neutrinoless decay and investigate two neutrino double beta decay in seven different enriched isotopes…

Nuclear Experiment · Physics 2009-07-24 A. S. Barabash