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Related papers: EXO: the Enriched Xenon Observatory for Double Bet…

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We present results from the KamLAND-Zen double-beta decay experiment based on an exposure of 77.6 days with 129 kg of $^{136}$Xe. The measured two-neutrino double-beta decay half-life of $^{136}$Xe is $T_{1/2}^{2\nu} = 2.38 \pm 0.02(stat)…

High Energy Physics - Experiment · Physics 2012-04-20 Zen Collaboration

AXEL is a high pressure xenon gas TPC detector being developed for neutrinoless double-beta decay search. We use the proportional scintillation mode with a new electroluminescence light detection system to achieve high energy resolution in…

Instrumentation and Detectors · Physics 2017-11-27 S. Ban , K. D. Nakamura , S. Akiyama , M. Hirose , A. K. Ichikawa , Y. Ishiyama , A. Minamino , K. Miuchi , T. Nakaya , H. Sekiya , S. Tanaka , K. Ueshima , S. Yanagita

We investigate the detection prospects for two-neutrino and neutrinoless second order weak decays of $^{124}$Xe -- double electron capture ($0/2\nu\text{ECEC}$), electron capture with positron emission ($0/2\nu\text{EC}\beta^+$) and…

Nuclear Experiment · Physics 2020-12-30 Christian Wittweg , Brian Lenardo , Alexander Fieguth , Christian Weinheimer

NEXT-DEMO is a large-scale prototype of the NEXT-100 detector, an electroluminescent time projection chamber that will search for the neutrinoless double beta decay of Xe-136 using 100 to 150 kg of enriched xenon gas. NEXT-DEMO was built to…

Neutrinoless double beta decay is one of the most sensitive approaches in non-accelerator particle physics to take us into a regime of physics beyond the standard model. This article is a brief review of the experiments in search of…

High Energy Physics - Phenomenology · Physics 2008-03-12 Somnath Choudhury

The lifetimes for the double beta decays of $^{76}$Ge, $^{82}$Se and $^{136}$Xe are calculated using very large shell model spaces. The two neutrino matrix elements obtained are in good agreement with the present experimental data. For…

Nuclear Theory · Physics 2009-10-30 E. Caurier , F. Nowacki , A. Poves , J. Retamosa

The Majorana Experiment is a next-generation Ge-76 double-beta decay search. It will employ 500 kg of Ge, isotopically enriched to 86% in Ge-76, in the form of 200 detectors in a close-packed array for high granularity. Each crystal will be…

We propose an EASY (Electroluminescent ApparatuS of high Yield) and SOFT (Separated Optimized FuncTion) time-projection chamber for the NEXT experiment, that will search for neutrinoless double beta decay (bb0nu) in Xe-136. Our experiment…

The upper limit on the mass of the Majorana neutrino, extracted from the limits on the nonobservation of the neutrinoless double-$\beta$ ($0\nu\beta\beta$) decay, is hampered by uncertainties in the matrix elements of the transition…

Nuclear Theory · Physics 2025-09-10 J. Terasaki , O. Civitarese

The NEXT collaboration is dedicated to the study of double beta decays of $^{136}$Xe using a high-pressure gas electroluminescent time projection chamber. This advanced technology combines exceptional energy resolution ($\leq 1\%$ FWHM at…

Instrumentation and Detectors · Physics 2026-02-12 NEXT Collaboration , C. Adams , H. Almazán , V. Álvarez , A. I. Aranburu , L. Arazi , I. J. Arnquist , F. Auria-Luna , S. Ayet , Y. Ayyad , C. D. R. Azevedo , K. Bailey , F. Ballester , J. E. Barcelon , M. del Barrio-Torregrosa , A. Bayo , J. M. Benlloch-Rodríguez , F. I. G. M. Borges , A. Brodoline , N. Byrnes , A. Castillo , E. Church , L. Cid , M. Cid , X. Cid , C. A. N. Conde , C. Cortes-Parra , F. P. Cossío , R. Coupe , E. Dey , P. Dietz , C. Echeverria , M. Elorza , R. Esteve , R. Felkai , L. M. P. Fernandes , P. Ferrario , F. W. Foss , Z. Freixa , J. García-Barrena , J. J. Gómez-Cadenas , J. W. R. Grocott , R. Guenette , J. Hauptman , C. A. O. Henriques , J. A. Hernando Morata , P. Herrero-Gómez , V. Herrero , C. Hervés Carrete , Y. Ifergan , A. F. B. Isabel , B. J. P. Jones , F. Kellerer , L. Larizgoitia , A. Larumbe , P. Lebrun , F. Lopez , N. López-March , R. Madigan , R. D. P. Mano , A. Marauri , A. P. Marques , J. Martín-Albo , A. Martínez , G. Martínez-Lema , M. Martínez-Vara , R. L. Miller , K. Mistry , J. Molina-Canteras , F. Monrabal , C. M. B. Monteiro , F. J. Mora , K. E. Navarro , P. Novella , D. R. Nygren , E. Oblak , I. Osborne , J. Palacio , B. Palmeiro , A. Para , I. Parmaksiz , A. Pazos , J. Pelegrin , M. Pérez Maneiro , M. Querol , J. Renner , I. Rivilla , C. Rogero , L. Rogers , B. Romeo , C. Romo-Luque , E. Ruiz-Chóliz , P. Saharia , F. P. Santos , J. M. F. dos Santos , M. Seemann , I. Shomroni , A. L. M. Silva , P. A. O. C. Silva , A. Simón , S. R. Soleti , M. Sorel , J. Soto-Oton , J. M. R. Teixeira , S. Teruel-Pardo , J. F. Toledo , C. Tonnelé , S. Torelli , J. Torrent , A. Trettin , P. R. G. Valle , M. Vanga , P. Vázquez Cabaleiro , J. F. C. A. Veloso , J. D. Villamil , J. Waiton , A. Yubero-Navarro

This Letter of Intent has been submitted to the Scientific Committee of the INFN Laboratori Nazionali del Gran Sasso (LNGS) in March 2004. It describes a novel facility at the LNGS to study the double beta decay of 76Ge using an (optionally…

Double electron capture is a rare nuclear decay process in which two orbital electrons are captured simultaneously in the same nucleus. Measurement of its two-neutrino mode would provide a new reference for the calculation of nuclear matrix…

Neutrinoless double beta decay is a lepton-number violating process predicted by many extensions of the standard model. It is actively searched for in several candidate isotopes within many experimental projects. The status of the…

Instrumentation and Detectors · Physics 2014-06-27 Luciano Pandola

Tagging barium ions in double beta decay experiments involving $^{136}$Xe offers a promising pathway to achieving an almost background-free environment, which is essential for addressing key unresolved questions in neutrino physics, such as…

Atomic Physics · Physics 2025-01-16 Álvaro Peralta Conde

Since 2003 the NEMO~3 experiment has been searching for neutrinoless double beta decay using about 10 kg of enriched isotopes. A limit of T_(1/2)(0nu) > 5.8 10**23 years at 90 % CL has been obtained for 100-Mo from the first two years of…

High Energy Physics - Experiment · Physics 2008-11-26 Stefan Soldner-Rembold

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…

The energy resolution of the EXO-200 detector is limited by electronics noise in the measurement of the scintillation response. Here we present a new technique to extract optimal scintillation energy measurements for signals split across…

Xenon time projection chambers (TPCs) have become a well-established detection technology for neutrinoless double beta decay searches in $^{136}$Xe. I discuss the motivations for this choice. I describe the status and prospects of both…

Instrumentation and Detectors · Physics 2019-04-16 Michel Sorel
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