Search for two-neutrino double electron capture of 
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 with XENON100

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

doi:10.1103/physrevc.95.024605

Cited by 16 publications

(14 citation statements)

References 45 publications

(47 reference statements)

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“…On the other hand, the ET half-life is almost fully consistent with the current XMASS limit. The ET central half-life is only about five times longer, and the range predicted by the ET lies largely within the sensitivity of ongoing experiments [33]. The QRPA predictions are mostly excluded including error bars, except the very recent results from Ref.…”

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confidence: 58%

“…The predictions from the ET, NSM, and QRPA are consistent. However, the ET shows a clear preference for longer half-lives than [38,39], in comparison to the horizontal lines that indicate the experimental lower limits set by the XENON100 [33] (red) and XMASS [32,34] (blue, green) collaborations as well as Gavrilyuk et al [31] (purple).…”

mentioning

confidence: 84%

“…Figure 2 compares our theoretical predictions for the 2νECEC on 124 Xe to the 124 Te ground state with the most advanced QRPA results from Refs. [38,39] and the most recent experimental 2νECEC limits [31][32][33][34]. Theoretical half-lives are shown as black bars.…”

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confidence: 99%

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

2019

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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 decay data. In the ET, the low-energy constants are fit to electron capture and β − transitions around xenon. For the nuclear shell model, we use an interaction in a large configuration space that reproduces the spectroscopy of nuclei in this mass region. For the dominant transition to the 124 Te ground state, we find half-lives T 2νECEC 1/2 = (1.3 − 18) × 10 22 y for the ET and T 2νECEC 1/2 = (0.43 − 2.9) × 10 22 y for the shell model. The ET uncertainty leads to a half-life almost entirely consistent with present experimental limits and largely within the reach of ongoing experiments. The shell model half-life range overlaps with the ET, but extends less beyond current limits. Our findings thus suggest that the two-neutrino double electron capture on 124 Xe has a good chance to be discovered by ongoing or future experiments. In addition, we present results for the two-neutrino double electron capture to excited states of 124 Te. arXiv:1809.04443v1 [nucl-th]

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confidence: 58%

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confidence: 84%

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

2019

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“…One such experiment is NEXT, to search for neutrinoless double-beta (ββ0ν) decay [1]. Gaseous xenon TPCs offer important advantages when compared to liquid xenon and double phase xenon TPCs [8][9][10][11][12][13][14]. The impact of background depends strongly on the achieved energy resolution, which is much better in the gas phase.…”

Section: Jhep01(2019)027mentioning

confidence: 99%

Electroluminescence TPCs at the thermal diffusion limit

Henriques¹,

Monteiro²,

González-Díaz³

et al. 2019

J. High Energ. Phys.

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The NEXT experiment aims at searching for the hypothetical neutrinoless double-beta decay from the 136 Xe isotope using a high-purity xenon TPC. Efficient discrimination of the events through pattern recognition of the topology of primary ionisation tracks is a major requirement for the experiment. However, it is limited by the diffusion of electrons. It is known that the addition of a small fraction of a molecular gas to xenon reduces electron diffusion. On the other hand, the electroluminescence (EL) yield drops and the achievable energy resolution may be compromised. We have studied the effect of adding several molecular gases to xenon (CO 2 , CH 4 and CF 4) on the EL yield and energy resolution obtained in a small prototype of driftless gas proportional scintillation counter. We have compared our results on the scintillation characteristics (EL yield and energy

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“…(w.e.)] measured for 19 200 h (Abe et al, 2018) and T 1=2 > 6.5 × 10 20 yr from the XENON100 TPC with 62 kg of liquid Xe measured at the LNGS for 5390 h (Aprile et al, 2017). In both these experiments natural Xe was used, with a 124 Xe abundance of ι ¼ 0.095%.…”

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confidence: 99%

Neutrinoless double-electron capture

et al. 2020

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Double-beta processes play a key role in the exploration of neutrino and weak interaction properties, and in the searches for effects beyond the standard model. During the last half century many attempts were undertaken to search for double-beta decay with emission of two electrons, especially for its neutrinoless mode 0ν2β − , the latter having still not been observed. Double-electron capture (2EC)was not yet in focus because of its in general lower transition probability. However, the rate of neutrinoless double-electron capture 0ν2EC can experience a resonance enhancement by many orders of magnitude when the initial and final states are energetically degenerate. In the resonant case, the sensitivity of the 0ν2EC process can approach the sensitivity of the 0ν2β − decay in the search for the Majorana mass of neutrinos, right-handed currents, and other new physics. An overview of the main experimental and theoretical results obtained during the last decade in this field is presented. The experimental part outlines search results of 2EC processes and measurements of the decay energies for possible resonant 0ν2EC transitions. An unprecedented precision in the determination of decay energies with Penning traps has allowed one to refine the values of the degeneracy parameter for all previously known near-resonant decays and has reduced the rather large uncertainties in the estimate of the 0ν2EC half-lives. The theoretical part contains an updated analysis of the electron shell effects and an overview of the nuclear-structure models, in which the nuclear matrix elements of the 0ν2EC decays are calculated. One can conclude that the decay probability of 0ν2EC can experience a significant enhancement in several nuclides.

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Search for two-neutrino double electron capture of Xe124 with XENON100

Cited by 16 publications

References 45 publications

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

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

Electroluminescence TPCs at the thermal diffusion limit

Neutrinoless double-electron capture

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