期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 5, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP05(2016)159
关键词
Dark Matter and Double Beta Decay (experiments); Rare decay
资金
- European Research Council (ERC) [339787-NEXT]
- Ministerio de Economia y Competitividad of Spain [2010 CSD2008-0037, FIS2014-53371-C04]
- Severo Ochoa Program [SEV-2014-0398]
- Portuguese FCT
- FEDER through the program COMPETE [PTDC/FIS/103860/2008]
- U.S. Department of Energy [DE-AC02-07CH11359, DE-FG02-13ER42020]
- University of Texas at Arlington
NEXT-100 is an electroluminescent high-pressure xenon gas time projection chamber that will search for the neutrinoless double beta (0v beta beta) decay of Xe-136. The detector possesses two features of great value for 0v beta beta searches: energy resolution better than 1% FWHM at the Q value of Xe-136 and track reconstruction for the discrimination of signal and background events. This combination results in excellent sensitivity, as discussed in this paper. Material-screening measurements and a detailed Monte Carlo detector simulation predict a background rate for NEXT-100 of at most 4 x 10(-4) counts keV(-1) kg(-1) yr(-1). Accordingly, the detector will reach a sensitivity to the 0v beta beta-decay half-life of 2.8 x 10(25) years (90% CL) for an exposure of 100 kg.year, or 6.0 x 10(25) years after a run of 3 effective years.
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