Related papers: Theoretical analysis and predictions for the doubl…

Search for two-neutrino double electron capture on $^{124}$Xe with the XMASS-I detector

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…

Nuclear Experiment · Physics 2016-05-27 XMASS Collaboration , K. Abe , K. Hiraide , K. Ichimura , Y. Kishimoto , K. Kobayashi , M. Kobayashi , S. Moriyama , K. Nakagawa , M. Nakahata , T. Norita , H. Ogawa , H. Sekiya , O. Takachio , A. Takeda , M. Yamashita , B. S. Yang , N. Y. Kim , Y. D. Kim , S. Tasaka , J. Liu , K. Martens , Y. Suzuki , R. Fujita , K. Hosokawa , K. Miuchi , N. Oka , Y. Onishi , Y. Takeuchi , Y. H. Kim , J. S. Lee , K. B. Lee , M. K. Lee , Y. Fukuda , Y. Itow , R. Kegasa , K. Kobayashi , K. Masuda , H. Takiya , H. Uchida , K. Nishijima , K. Fujii , I. Murayama , S. Nakamura

Two-neutrino double electron capture on $^{124}$Xe based on an effective theory and the nuclear shell model

We study the two-neutrino double electron capture on $^{124}$Xe based on an effective theory (ET) and large-scale shell model calculations, two modern nuclear structure approaches that have been tested against Gamow-Teller and double-beta…

Nuclear Theory · Physics 2019-10-02 E. A. Coello Pérez , J. Menéndez , A. Schwenk

Search for Two-Neutrino Double Electron Capture of $^{124}$Xe with XENON100

Two-neutrino double electron capture is a rare nuclear decay where two electrons are simultaneously captured from the atomic shell. For $^{124}$Xe this process has not yet been observed and its detection would provide a new reference for…

Nuclear Experiment · Physics 2017-02-17 The XENON Collaboration , E. Aprile , J. Aalbers , F. Agostini , M. Alfonsi , F. D. Amaro , M. Anthony , F. Arneodo , P. Barrow , L. Baudis , B. Bauermeister , M. L. Benabderrahmane , T. Berger , P. A. Breur , A. Brown , E. Brown , S. Bruenner , G. Bruno , R. Budnik , L. Bütikofer , J. Calvén , J. M. R. Cardoso , M. Cervantes , D. Cichon , D. Coderre , A. P. Colijn , J. Conrad , J. P. Cussonneau , M. P. Decowski , P. de Perio , P. Di Gangi , A. Di Giovanni , S. Diglio , E. Duchovni , J. Fei , A. D. Ferella , A. Fieguth , D. Franco , W. Fulgione , A. Gallo Rosso , M. Galloway , F. Gao , M. Garbini , C. Geis , L. W. Goetzke , Z. Greene , C. Grignon , C. Hasterok , E. Hogenbirk , R. Itay , B. Kaminsky , G. Kessler , A. Kish , H. Landsman , R. F. Lang , D. Lellouch , L. Levinson , M. Le Calloch , C. Levy , Q. Lin , S. Lindemann , M. Lindner , J. A. M. Lopes , A. Manfredini , T. Marrodán Undagoitia , J. Masbou , F. V. Massoli , D. Masson , D. Mayani , Y. Meng , M. Messina , K. Micheneau , B. Miguez , A. Molinario , M. Murra , J. Naganoma , K. Ni , U. Oberlack , S. E. A. Orrigo , P. Pakarha , B. Pelssers , R. Persiani , F. Piastra , J. Pienaar , M. -C. Piro , G. Plante , N. Priel , L. Rauch , S. Reichard , C. Reuter , A. Rizzo , S. Rosendahl , N. Rupp , J. M. F. dos Santos , G. Sartorelli , M. Scheibelhut , S. Schindler , J. Schreiner , M. Schumann , L. Scotto Lavina , M. Selvi , P. Shagin , M. Silva , H. Simgen , M. v. Sivers , A. Stein , D. Thers , A. Tiseni , G. Trinchero , C. D. Tunnell , R. Wall , H. Wang , M. Weber , Y. Wei , C. Weinheimer , J. Wulf , Y. Zhang

Investigation of $2\nu$ECEC in $^{132}$Ba and revisited for $^{78}$Kr

We present a theoretical investigation of two-neutrino double electron capture ($2\nu$ECEC) in $^{132}$Ba and $^{78}$Kr based on large-scale shell-model calculations. The nuclear matrix elements (NMEs) for the $2\nu$ECEC process in…

Nuclear Theory · Physics 2025-11-04 Deepak Patel , Praveen C. Srivastava

Improved search for two-neutrino double electron capture on $^{124}$Xe and $^{126}$Xe using particle identification in XMASS-I

We conducted an improved search for the simultaneous capture of two $K$-shell electrons on the $^{124}$Xe and $^{126}$Xe nuclei with emission of two neutrinos using 800.0 days of data from the XMASS-I detector. A novel method to…

Nuclear Experiment · Physics 2018-12-27 XMASS Collaboration , K. Abe , K. Hiraide , K. Ichimura , Y. Kishimoto , K. Kobayashi , M. Kobayashi , S. Moriyama , M. Nakahata , T. Norita , H. Ogawa , K. Sato , H. Sekiya , O. Takachio , A. Takeda , S. Tasaka , M. Yamashita , B. S. Yang , N. Y. Kim , Y. D. Kim , Y. Itow , K. Kanzawa , R. Kegasa , K. Masuda , H. Takiya , K. Fushimi , G. Kanzaki , K. Martens , Y. Suzuki , B. D. Xu , R. Fujita , K. Hosokawa , K. Miuchi , N. Oka , Y. Takeuchi , Y. H. Kim , K. B. Lee , M. K. Lee , Y. Fukuda , M. Miyasaka , K. Nishijima , S. Nakamura

Calculation of nuclear matrix elements in neutrinoless double electron capture

We compute nuclear matrix elements for neutrinoless double electron capture on $^{152}$Gd, $^{164}$Er and $^{180}$W nuclei. Recent precise mass measurements for these nuclei have shown a large resonance enhancement factor that makes them…

Nuclear Theory · Physics 2015-06-04 Tomas R. Rodriguez , Gabriel Martinez-Pinedo

Nuclear matrix elements of double beta decay from beta decay

The evaluation of the nuclear matrix elements (NME) of the two-neutrino double beta ($2\nu\beta\beta$) decay and neutrinoless double beta ($0\nu\beta\beta$) decay using the proton-neutron quasiparticle random-phase approximation (pnQRPA) is…

Nuclear Theory · Physics 2009-11-10 Jouni Suhonen

Examinations of the consistency of the quasiparticle random-phase approximation approach to double-$\beta$ decay of $^{48}$Ca

The nuclear matrix elements (NMEs) of the neutrinoless and two-neutrino double-$\beta$ decays of $^{48}$Ca are calculated by the quasiparticle random-phase approximation (QRPA) with emphasis on the consistency examinations of this…

Nuclear Theory · Physics 2018-03-07 J. Terasaki

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

Neutrinoless double electron capture

Direct determination of the neutrino mass is at the present time one of the most important aims of experimental and theoretical research in nuclear and particle physics. A possible way of detection is through neutrinoless double electron…

Nuclear Theory · Physics 2015-09-08 J. Kotila , J. Barea , F. Iachello

Two decay paths for calculation of nuclear matrix element of neutrinoless double-beta decay using quasiparticle random-phase approximation

It is possible to employ virtual decay paths, including two-particle transfer, to calculate the nuclear matrix element of neutrinoless double-beta decay under the closure approximation, in addition to the true double-beta path. In the…

Nuclear Theory · Physics 2016-03-02 Jun Terasaki

Search for two neutrino double electron capture of $^{124}$Xe and $^{126}$Xe in the full exposure of the LUX detector

Two-neutrino double electron capture is a process allowed in the Standard Model of Particle Physics. This rare decay has been observed in $^{78}$Kr, $^{130}$Ba and more recently in $^{124}$Xe. In this publication we report on the search for…

Nuclear Experiment · Physics 2020-09-15 LUX Collaboration , D. S. Akerib , S. Alsum , H. M. Araújo , X. Bai , J. Balajthy , A. Baxter , E. P. Bernard , A. Bernstein , T. P. Biesiadzinski , E. M. Boulton , B. Boxer , P. Brás , S. Burdin , D. Byram , M. C. Carmona-Benitez , C. Chan , J. E. Cutter , L. de Viveiros , E. Druszkiewicz , A. Fan , S. Fiorucci , R. J. Gaitskell , C. Ghag , M. G. D. Gilchriese , C. Gwilliam , C. R. Hall , S. J. Haselschwardt , S. A. Hertel , D. P. Hogan , M. Horn , D. Q. Huang , C. M. Ignarra , R. G. Jacobsen , O. Jahangir , W. Ji , K. Kamdin , K. Kazkaz , D. Khaitan , E. V. Korolkova , S. Kravits , V. A. Kudryavtsev , E. Leason , B. G. Lenardo , K. T. Lesko , J. Liao , J. Lin , A. Lindote , M. I. Lopes , A. Manalaysay , R. L. Mannino , N. Marangou , M. F. Marzioni , D. N. McKinsey , D. -M. Mei , M. Moongweluwan , J. A. Morad , A. St. J. Murphy , A. Naylor , C. Nehrkorn , H. N. Nelson , F. Neves , A. Nilima , K. C. Oliver-Mallory , K. J. Palladino , E. K. Pease , Q. Riffard , G. R. C. Rischbieter , C. Rhyne , P. Rossiter , S. Shaw , T. A. Shutt , C. Silva , M. Solmaz , V. N. Solovov , P. Sorensen , T. J. Sumner , M. Szydagis , D. J. Taylor , R. Taylor , W. C. Taylor , B. P. Tennyson , P. A. Terman , D. R. Tiedt , W. H. To , M. Tripathi , L. Tvrznikova , U. Utku , S. Uvarov , A. Vacheret , V. Velan , R. C. Webb , J. T. White , T. J. Whitis , M. S. Witherell , F. L. H. Wolfs , D. Woodward , J. Xu , C. Zhang

Detection prospects for the second-order weak decays of $^{124}$Xe in multi-tonne xenon time projection chambers

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

Isoscalar pairing interaction for the quasiparticle random-phase approximation approach to double-$\beta$ and $\beta$ decays

We have proposed in a series of previous papers a method to determine the effective axial-vector current coupling and the strength of the isoscalar proton-neutron pairing interaction for calculating the nuclear matrix elements of the…

Nuclear Theory · Physics 2019-10-02 J. Terasaki , Y. Iwata

Measurement of two-neutrino double electron capture half-life of $^{124}$Xe with PandaX-4T

Detailed studies of two-neutrino double electron capture (2$\nu$DEC) is a crucial step towards searching for the neutrino-less mode to explore the Majorana nature of neutrinos. We have measured precisely the half-life of the 2$\nu$DEC…

Nuclear Experiment · Physics 2025-05-20 PandaX Collaboration , Zihao Bo , Wei Chen , Xun Chen , Yunhua Chen , Zhaokan Cheng , Xiangyi Cui , Yingjie Fan , Deqing Fang , Zhixing Gao , Lisheng Geng , Karl Giboni , Xunan Guo , Xuyuan Guo , Zichao Guo , Chencheng Han , Ke Han , Changda He , Jinrong He , Di Huang , Houqi Huang , Junting Huang , Ruquan Hou , Yu Hou , Xiangdong Ji , Xiangpan Ji , Yonglin Ju , Chenxiang Li , Jiafu Li , Mingchuan Li , Shuaijie Li , Tao Li , Zhiyuan Li , Qing Lin , Jianglai Liu , Congcong Lu , Xiaoying Lu , Lingyin Luo , Yunyang Luo , Wenbo Ma , Yugang Ma , Yajun Mao , Yue Meng , Xuyang Ning , Binyu Pang , Ningchun Qi , Zhicheng Qian , Xiangxiang Ren , Dong Shan , Xiaofeng Shang , Xiyuan Shao , Guofang Shen , Manbin Shen , Wenliang Sun , Yi Tao , Anqing Wang , Guanbo Wang , Hao Wang , Jiamin Wang , Lei Wang , Meng Wang , Qiuhong Wang , Shaobo Wang , Siguang Wang , Wei Wang , Xiuli Wang , Xu Wang , Zhou Wang , Yuehuan Wei , Weihao Wu , Yuan Wu , Mengjiao Xiao , Xiang Xiao , Kaizhi Xiong , Yifan Xu , Shunyu Yao , Binbin Yan , Xiyu Yan , Yong Yang , Peihua Ye , Chunxu Yu , Ying Yuan , Zhe Yuan , Youhui Yun , Xinning Zeng , Minzhen Zhang , Peng Zhang , Shibo Zhang , Shu Zhang , Tao Zhang , Wei Zhang , Yang Zhang , Yingxin Zhang , Yuanyuan Zhang , Li Zhao , Jifang Zhou , Jiaxu Zhou , Jiayi Zhou , Ning Zhou , Xiaopeng Zhou , Yubo Zhou , Zhizhen Zhou

Large-scale shell-model study of two-neutrino double-beta decay of $^{82}$Se, $^{94}$Zr, $^{108}$Cd, $^{124}$Sn, $^{128}$Te, $^{130}$Te, $^{136}$Xe, and $^{150}$Nd

Large-scale shell-model calculations have been performed for the study of two neutrino double-beta ($2\nu\beta\beta$) decay in $^{82}$Se, $^{94}$Zr, $^{108}$Cd, $^{124}$Sn, $^{128}$Te, $^{130}$Te, $^{136}$Xe, and $^{150}$Nd. We have…

Nuclear Theory · Physics 2023-12-07 Deepak Patel , Praveen C. Srivastava , V. K. B. Kota , R. Sahu

Two-neutrino double electron capture of $^{124}$Xe in the first LUX-ZEPLIN exposure

The broad physics reach of the LUX-ZEPLIN (LZ) experiment covers rare phenomena beyond the direct detection of dark matter. We report precise measurements of the extremely rare decay of $^{124}$Xe through the process of two-neutrino double…

Nuclear Experiment · Physics 2024-12-10 J. Aalbers , D. S. Akerib , A. K. Al Musalhi , F. Alder , C. S. Amarasinghe , A. Ames , T. J. Anderson , N. Angelides , H. M. Araújo , J. E. Armstrong , M. Arthurs , A. Baker , S. Balashov , J. Bang , J. W. Bargemann , E. E. Barillier , K. Beattie , A. Bhatti , A. Biekert , T. P. Biesiadzinski , H. J. Birch , E. Bishop , G. M. Blockinger , B. Boxer , C. A. J. Brew , P. Brás , S. Burdin , M. Buuck , M. C. Carmona-Benitez , M. Carter , A. Chawla , H. Chen , Y. T. Chin , N. I. Chott , M. V. Converse , R. Coronel , A. Cottle , G. Cox , D. Curran , C. E. Dahl , A. David , J. Delgaudio , S. Dey , L. de Viveiros , L. Di Felice , C. Ding , J. E. Y. Dobson , E. Druszkiewicz , S. Dubey , S. R. Eriksen , A. Fan , N. M. Fearon , N. Fieldhouse , S. Fiorucci , H. Flaecher , E. D. Fraser , T. M. A. Fruth , R. J. Gaitskell , A. Geffre , J. Genovesi , C. Ghag , R. Gibbons , S. Gokhale , J. Green , M. G. D. van der Grinten , J. J. Haiston , C. R. Hall , S. Han , E. Hartigan-O'Connor , S. J. Haselschwardt , M. A. Hernandez , S. A. Hertel , G. Heuermann , G. J. Homenides , M. Horn , D. Q. Huang , D. Hunt , E. Jacquet , R. S. James , J. Johnson , A. C. Kaboth , A. C. Kamaha , M. Kannichankandy , D. Khaitan , A. Khazov , I. Khurana , J. Kim , Y. D. Kim , J. Kingston , R. Kirk , D. Kodroff , L. Korley , E. V. Korolkova , H. Kraus , S. Kravitz , L. Kreczko , V. A. Kudryavtsev , D. S. Leonard , K. T. Lesko , C. Levy , J. Lin , A. Lindote , W. H. Lippincott , M. I. Lopes , W. Lorenzon , C. Lu , S. Luitz , P. A. Majewski , A. Manalaysay , R. L. Mannino , C. Maupin , M. E. McCarthy , G. McDowell , D. N. McKinsey , J. McLaughlin , J. B. McLaughlin , R. McMonigle , E. Mizrachi , A. Monte , M. E. Monzani , E. Morrison , B. J. Mount , M. Murdy , A. St. J. Murphy , A. Naylor , H. N. Nelson , F. Neves , A. Nguyen , C. L. O'Brien , I. Olcina , K. C. Oliver-Mallory , J. Orpwood , K. Y Oyulmaz , K. J. Palladino , J. Palmer , N. J. Pannifer , N. Parveen , S. J. Patton , B. Penning , G. Pereira , E. Perry , T. Pershing , A. Piepke , Y. Qie , J. Reichenbacher , C. A. Rhyne , Q. Riffard , G. R. C. Rischbieter , E. Ritchey , H. S. Riyat , R. Rosero , T. Rushton , D. Rynders , D. Santone , A. B. M. R. Sazzad , R. W. Schnee , G. Sehr , B. Shafer , S. Shaw , T. Shutt , J. J. Silk , C. Silva , G. Sinev , J. Siniscalco , R. Smith , V. N. Solovov , P. Sorensen , J. Soria , A. Stevens , K. Stifter , B. Suerfu , T. J. Sumner , M. Szydagis , D. R. Tiedt , M. Timalsina , Z. Tong , D. R. Tovey , J. Tranter , M. Trask , M. Tripathi , A. Vacheret , A. C. Vaitkus , O. Valentino , V. Velan , A. Wang , J. J. Wang , Y. Wang , J. R. Watson , L. Weeldreyer , T. J. Whitis , K. Wild , M. Williams , W. J. Wisniewski , L. Wolf , F. L. H. Wolfs , S. Woodford , D. Woodward , C. J. Wright , Q. Xia , J. Xu , Y. Xu , M. Yeh , D. Yeum , W. Zha , E. A. Zweig

rp-Process weak-interaction mediated rates of waiting-point nuclei

Electron capture and positron decay rates are calculated for neutron-deficient Kr and Sr waiting point nuclei in stellar matter. The calculation is performed within the framework of pn-QRPA model for rp-process conditions. Fine tuning of…

Nuclear Theory · Physics 2012-03-21 Jameel-Un Nabi

Nuclear matrix elements of neutrinoless double beta decay with improved short-range correlations

Nuclear matrix elements of the neutrinoless double beta decays of 96Zr, 100Mo, 116Cd, 128Te, 130Te and 136Xe are calculated for the light-neutrino exchange mechanism by using the proton-neutron quasiparticle random-phase approximation…

Nuclear Theory · Physics 2008-11-26 Markus Kortelainen , Jouni Suhonen

Precise Half-Life Values for Two-Neutrino Double-$\beta$ Decay: 2020 review

All existing positive results on two-neutrino double beta decay and two-neutrino double electron capture in different nuclei have been analyzed. Weighted average and recommended half-life values for $^{48}$Ca, $^{76}$Ge, $^{82}$Se,…

Nuclear Experiment · Physics 2020-10-01 Alexander Barabash