Sensitivity of the DARWIN observatory to the neutrinoless double beta decay of $^{136}$Xe

Agostini, F.; Maouloud, S. E. M. Ahmed; Althueser, L.; Amaro, F. D.; Antunović, B.; Aprile, E.; Baudis, L.; Baur, D.; Biondi, Y.; Bismark, A.; Breur, P. A.; Brown, A.; Bruno, G.; Budnik, R.; Capelli, C.; Cardoso, J. M. R.; Cichon, D.; Clark, Michael; Colijn, A. P.; Cuenca‐Garcìa, J. J.; Cussonneau, J. P.; Decowski, M. P.; Depoian, A.; Dierle, J.; Gangi, P. Di; Giovanni, A. Di; Diglio, S.; Santos, J. M. F. dos; Drexlin, G.; Eitel, K.; Engel, R.; Ferella, A. D.; Fischer, H.; Galloway, M.; Gao, F.; Girard, François; Glück, F.; Grandi, L.; Größle, Robin; Gumbsheimer, R.; Hansmann-Menzemer, S.; Jörg, Florian; Khundzakishvili, G.; Kopec, A.; Kuger, F.; Krauss, Lawrence M.; Landsman, H.; Lang, R. F.; Lindemann, S.; Lindner, M.; Lopes, J. A. M.; Villalpando, A. Loya; Macolino, C.; Manfredini, A.; Undagoitia, T. Marrodán; Masbou, J.; Masson, E.; Meinhardt, Patrick; Milutinović, Sanja; Molinario, A.; Monteiro, C. M. B.; Murra, M.; Oberlack, U.; Pandurović, M.; Peres, R.; Pienaar, J.; Pierre, Maxime; Pizzella, V.; Qin, J.; García, D. Ramírez; Reichard, S.; Rupp, N.; Sánchez-Lucas, P.; Sartorelli, G.; Schulte, D.; Schümann, M.; Selvi, M.; Silva, M.; Simgen, H.; Steidl, M.; Terliuk, A.; Therreau, C.; Thers, D.; Thieme, K.; Trotta, Roberto; Tunnell, C.; Valerius, K.; Volta, G.; Vorkapic, D.; Weinheimer, C.; Wittweg, C.; Wolf, J.; Zopounidis, J. P.; Zuber, Κ.

doi:10.48550/arxiv.2003.13407

Cited by 8 publications

(12 citation statements)

References 34 publications

(28 reference statements)

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“…The position-based tagging efficiency is highly dependent on the energy of the state: the higher-energy states are likely to emit more energetic photons, which have longer mean free path, while lower-energy states are more likely to emit lower-energy photons and IC electrons, which deposit energy very close to the primary nucleus. The results presented here cover the range of expected position resolutions in next-generation detectors: dark matter experiments quote projections as good as 3 mm in the z dimension [45] and 15 mm in the x − y dimension [46]. The efficiencies reported here do not change drastically with x−y resolution due to the relatively good resolution assumed for z.…”

Section: A Event Topology Analysissupporting

confidence: 51%

Solar neutrino detection in liquid xenon detectors via charged-current scattering to excited states

Haselschwardt,

Lenardo,

Pirinen

et al. 2020

Preprint

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We investigate the prospects for real-time detection of solar neutrinos via the charged-current neutrino-nucleus scattering process in liquid xenon time projection chambers. We use a nuclear shell model, benchmarked with experimental data, to calculate the cross sections for populating specific excited states of the caesium nuclei produced by neutrino capture on 131 Xe and 136 Xe. The shell model is further used to compute the decay schemes of the low-lying 1 + excited states of 136 Cs, for which there is sparse experimental data. We explore the possibility of tagging the characteristic de-excitation γ-rays/conversion electrons using two techniques: spatial separation of their energy deposits using event topology and their time separation using delayed coincidence. The efficiencies in each case are evaluated within a range of realistic detector parameters. We find that the topological signatures are likely to be dominated by radon backgrounds, but that a delayed coincidence signature from long-lived states predicted in 136 Cs may enable background-free detection of CNO neutrino interactions in next-generation experiments with smaller uncertainty than current measurements. We also estimate the sensitivity as a function of exposure for detecting the solar-temperature-induced line shift in 7 Be neutrino emission, which may provide a new test of solar models.

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Section: A Event Topology Analysissupporting

confidence: 51%

Solar neutrino detection in liquid xenon detectors via charged-current scattering to excited states

Haselschwardt,

Lenardo,

Pirinen

et al. 2020

Preprint

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“…The more notable contributors have historically been the stainless steel cryostat and photosensors [35]. We include a materials background component derived from the DARWIN simulation in [39], which considers a more radiopure titanium cryostat. The simulation is adapted to this case by incorporating position-dependent multiscatter resolution, 3-15 mm, and selecting events within a 30 t super-ellipsoidal fiducial volume that minimizes the contribution of these Compton scatters below 200 keV.…”

Section: The Darwin Experimentsmentioning

confidence: 99%

Solar Neutrino Detection Sensitivity in DARWIN via Electron Scattering

Aalbers¹,

Agostini²,

Maouloud³

et al. 2020

Preprint

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We detail the sensitivity of the liquid xenon (LXe) DARWIN observatory to solar neutrinos via elastic electron scattering. We find that DARWIN will have the potential to measure the fluxes of five solar neutrino components: pp, 7 Be, 13 N, 15 O and pep. The precision of the 13 N, 15 O and pep components is hindered by the double-beta decay of 136 Xe and, thus, would benefit from a depleted target. A high-statistics observation of pp neutrinos would allow us to infer the values of the weak mixing angle, sin 2 θ w , and the electron-type neutrino survival probability, P e , in the electron recoil energy region from a few keV up to 200 keV for the first time, with relative precision of 5% and 4%, respectively, at an exposure of 300 ty. An observation of pp and 7 Be neutrinos would constrain the neutrino-inferred solar luminosity down to 0.2%. A combination of all flux measurements would distinguish between the high (GS98) and low metallicity (AGS09) solar models with 2.1-2.5σ significance, independent of external measurements from other experia

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“…This is well below the current constraint given by the KamLAND-Zen experiment, m ββ < 0.061-0.165 eV [40], where the uncertainty of this upper bound is due to the error in the nuclear matrix element of 136 Xe. Future experiments are expected to be sensitive to m ββ = O(0.01) eV [41,42] and thus potentially able to test this prediction.…”

Section: Minimal Gauged U(1) L µ −L τ Modelmentioning

confidence: 99%

Leptogenesis in the minimal gauged U(1)$_{L_μ-L_τ}$ model and the sign of the cosmological baryon asymmetry

Asai,

Hamaguchi,

Nagata

et al. 2020

Preprint

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The minimal gauged U(1) Lµ−Lτ model is a simple extension of the Standard Model and has a strong predictive power for the neutrino sector. In particular, the mass spectrum and couplings of heavy right-handed neutrinos are determined as functions of three neutrino Dirac Yukawa couplings, with which we can evaluate the baryon asymmetry of the Universe generated through their decay, i.e., leptogenesis. In this letter, we study leptogenesis in the minimal gauged U(1) Lµ−Lτ model. It turns out that the sign of the resultant baryon asymmetry for the case with the Dirac CP phase, δ, larger than π is predicted to be opposite to that for δ < π. In addition, if lepton asymmetry is dominantly produced by the decay of the lightest right-handed neutrino, then the correct sign of baryon asymmetry is obtained for δ > π, which is favored by the current neutrino-oscillation experiments, whilst the wrong sign is obtained for δ < π. We further investigate a non-thermal leptogenesis scenario where the U(1) Lµ−Lτ breaking field plays the role of inflaton and decays into right-handed neutrinos, as a concrete example. It is found that this simple framework offers a successful inflation that is consistent with the CMB observation. We then show that the observed amount of baryon asymmetry can be reproduced in this scenario, with its sign predicted to be positive in most of the parameter space.

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Sensitivity of the DARWIN observatory to the neutrinoless double beta decay of $^{136}$Xe

Cited by 8 publications

References 34 publications

Solar neutrino detection in liquid xenon detectors via charged-current scattering to excited states

Solar neutrino detection in liquid xenon detectors via charged-current scattering to excited states

Solar Neutrino Detection Sensitivity in DARWIN via Electron Scattering

Leptogenesis in the minimal gauged U(1)$_{L_μ-L_τ}$ model and the sign of the cosmological baryon asymmetry

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