Backgrounds and sensitivity of the NEXT double beta decay experiment
Abstract
NEXT (Neutrino Experiment with a Xenon TPC) is a neutrinoless double-beta (\beta \beta 0\nu) decay experiment that will operate at the Canfranc Underground Laboratory (LSC). It is an electroluminescent high-pressure gaseous xenon Time Projection Chamber (TPC) with separate read-out planes for calorimetry and tracking. Energy resolution and background suppression are the two key features of any neutrinoless double beta decay experiment. NEXT has both good energy resolution (<1% FWHM) at the Q value of Xe and an extra handle for background identification provided by track reconstruction. With the background model of NEXT, based on the detector simulation and the evaluation of the detector radiopurity, we can determine the sensitivity to a measurement of the \beta\beta 2\nu\ mode in NEW and to a \beta\beta 0\nu\ search in NEXT100. In this way we can predict the background rate of counts/(keV kg yr), and a sensitivity to the Majorana neutrino mass down to 100 meV after a 5-years run of NEXT100.
Keywords
Cite
@article{arxiv.1410.6699,
title = {Backgrounds and sensitivity of the NEXT double beta decay experiment},
author = {M. Nebot-Guinot and P. Ferrario and J. Martin-Albo and J. Muñoz Vidal and J. J. Gómez-Cadenas},
journal= {arXiv preprint arXiv:1410.6699},
year = {2019}
}
Comments
3 pages, 3 figures, 2 tables. Proceedings from the poster session at the 37th International Conference on High Energy Physics (ICHEP, Valencia, Jul 2014)