Present Status and Future Perspectives of the NEXT Experiment

Table 2

Expected experimental parameters of the three xenon-based double beta decay technologies in a possible ton-scale experiment: (a) signal detection efficiency, which depends on the fraction of signal that escapes detection, 𝜀; (b) energy resolution, 𝛿𝐸, at the 𝑄 value of ¹³⁶Xe; and (c) background rate, 𝑏, in the region of interest around 𝑄_𝛽𝛽 expressed in counts/(keV·kg·y).

Experiment	𝜀	𝛿𝐸 (% FWHM)	𝑏 (10^−3 ckky)
LXe	38	3.2	0.1
XeSci	42	6.5	0.1
HPXe	30	0.5	0.1