2023 Articles

Erratum to: Sensitivity of the DARWIN observatory to the neutrinoless double beta decay of ¹³⁶Xe

Agostini, F.; Maouloud, S. E. M. A.; Althueser, L.; Amaro, F.; Antunovic, B.; Aprile, E.; Baudis, L.; Baur, D.; Biondi, Y.; Bismark, A.; Breur, P. A.; Brown, A.; Bruno, G.; Budnik, R.; Capelli, C.; Cardoso, J.; Cichon, D.; Clark, M.; Colijn, A. P.; Cuenca-García, J. J.; Cussonneau, J. P.; Decowski, M. P.; Depoian, A.; Dierle, J.; Gangi, P. D.; Giovanni, A. D.; Diglio, S.; Santos, J. M. F. d.; Drexlin, G.; Eitel, K.; Engel, R.; Ferella, A. D.; Fischer, H.; Galloway, M.; Gao, F.; Girard, F.; Glück, F.; Grandi, L.; Größle, R.; Gumbsheimer, R.

We correct an overestimation of the production rate of ¹³⁷Xe in the DARWIN detector operated at LNGS. This formerly dominant intrinsic background source is now at a level similar to the irreducible background from solar ⁸B neutrinos, thus unproblematic at the LNGS depth. The projected half-life sensitivity for the neutrinoless double beta decay (0𝜈𝛽𝛽) of ¹³⁶Xe improves by 22% compared to the previously reported number and is now T^0𝜈₁⸝₂ = 3.0 x 10²⁷ yr (90% C.L.) after 10 years of DARWIN operation.