The Majorana Ge-76 Double-Beta Decay Project
The Majorana Collaboration, C. E. Aalseth, D. Anderson, F. T. Avignone, A. Barabash, T. W. Bowyer, R. L. Brodzinski, V. Brudanin, J. I. Collar, P. J. Doe, S. Egorov, S. R. Elliott, H. A. Farach, R. Gaitskell, D. Jordan, O. Kochetov, S. Konovalov, R. Kouzes, H. S. Miley, W. K. Pitts, J. H. Reeves, R. G. H. Robertson, V. Sandukovsky, E. Smith, V. Stekhanov, R. C. Thompson, W. Tornow, V. Umatov, R. A. Warner, J. Webb, J. Wilkerson, A. Young
Abstract
The Majorana Experiment is a next-generation Ge-76 double-beta decay search. It will employ 500 kg of Ge, isotopically enriched to 86% in Ge-76, in the form of 200 detectors in a close-packed array for high granularity. Each crystal will be electronically segmented, with each region fitted with pulse-shape analysis electronics. A half-life sensitivity is predicted of 4.2e27 y or <mnu> < 0.02-0.07 eV, depending on the nuclear matrix elements used to interpret the data.
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