@article{d9069c1966c742caacdef720d79ef6a8,
title = "Reconstructing neutrinoless double beta decay event kinematics in a xenon gas detector with vertex tagging",
abstract = "If neutrinoless double beta decay is discovered, the next natural step would be understanding the lepton number violating physics responsible for it. Several alternatives exist beyond the exchange of light neutrinos. Some of these mechanisms can be distinguished by measuring phase-space observables, namely the opening angle cos θ among the two decay electrons, and the electron energy spectra, T1 and T2. In this work, we study the statistical accuracy and precision in measuring these kinematic observables in a future xenon gas detector with the added capability to precisely locate the decay vertex. For realistic detector conditions (a gas pressure of 10 bar and spatial resolution of 4 mm), we find that the average cosθ¯ and T1¯ values can be reconstructed with a precision of 0.19 and 110 keV, respectively, assuming that only 10 neutrinoless double beta decay events are detected.",
keywords = "Dark Matter and Double Beta Decay (experiments), Rare Decay",
author = "\{The Next Collaboration\} and M. Mart{\'i}nez-Vara and K. Mistry and F. Pompa and Jones, \{B. J.P.\} and J. Mart{\'i}n-Albo and M. Sorel and C. Adams and H. Almaz{\'a}n and V. {\'A}lvarez and B. Aparicio and Aranburu, \{A. I.\} and L. Arazi and Arnquist, \{I. J.\} and F. Auria-Luna and S. Ayet and Azevedo, \{C. D.R.\} and K. Bailey and F. Ballester and \{del Barrio-Torregrosa\}, M. and A. Bayo and Benlloch-Rodr{\'i}guez, \{J. M.\} and Borges, \{F. I.G.M.\} and A. Brodolin and N. Byrnes and S. C{\'a}rcel and A. Castillo and E. Church and L. Cid and Conde, \{C. A.N.\} and T. Contreras and Coss{\'i}o, \{F. P.\} and R. Coupe and E. Dey and G. D{\'i}az and C. Echevarria and M. Elorza and J. Escada and R. Esteve and R. Felkai and Fernandes, \{L. M.P.\} and P. Ferrario and Ferreira, \{A. L.\} and Foss, \{F. W.\} and Z. Freixa and J. Garc{\'i}a-Barrena and G{\'o}mez-Cadenas, \{J. J.\} and Grocott, \{J. W.R.\} and Y. Ifergan and G. Mart{\'i}nez-Lema and A. Sim{\'o}n",
note = "Publisher Copyright: {\textcopyright} The Author(s) 2025.",
year = "2025",
month = jul,
day = "1",
doi = "10.1007/JHEP07(2025)170",
language = "English",
volume = "2025",
journal = "Journal of High Energy Physics",
issn = "1126-6708",
publisher = "Springer Verlag",
number = "7",
}