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The Majorana 76Ge double-beta decay project

Publication ,  Journal Article
Aalseth, CE; Adles, E; Anderson, D; Avignone, FT; Barabash, A; Bowyer, TW; Brodzinski, RL; Brudanin, V; Champangne, A; Collar, JI; Doe, PJ ...
Published in: Nuclear Physics B - Proceedings Supplements
January 1, 2003

The interest and relevance of next-generation 0ν ββ-decay experiments is increasing. Even with nonzero neutrino mass strongly suggested by solar and atmospheric neutrino experiments sensitive to δm2, 0ν ββ-decay experiments are still the only way to establish the Dirac or Majorana nature of neutrinos by measuring the effective electron neutrino mass, 〈mν〉. In addition, the atmospheric neutrino oscillation experiments imply that at least one neutrino has a mass greater than about 50 meV. The Majorana Experiment expects to probe an effective neutrino mass near this critical value. Majorana is a next-generation 76Ge double-beta decay search. It will employ 500 kg of Ge, isotopically enriched to 86% in 76Ge, in the form of ∼ 200 detectors in a close-packed array. Each crystal will be electronically segmented and each segment fitted with pulse-shape analysis electronics. This combination of segmentation and pulse-shape analysis significantly improves our ability to discriminate neutrinoless double beta-decay from internal cosmogenic 68Ge and 60Co. The half-life sensitivity is estimated to be 4.2 × 1027 y corresponding to a 〈mν〉 range of ≤ 20-70 meV, depending on the nuclear matrix elements used to interpret the data.

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Published In

Nuclear Physics B - Proceedings Supplements

DOI

ISSN

0920-5632

Publication Date

January 1, 2003

Volume

124

Start / End Page

247 / 252
 

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Aalseth, C. E., Adles, E., Anderson, D., Avignone, F. T., Barabash, A., Bowyer, T. W., … Young, A. (2003). The Majorana 76Ge double-beta decay project. Nuclear Physics B - Proceedings Supplements, 124, 247–252. https://doi.org/10.1016/S0920-5632(03)02116-9
Aalseth, C. E., E. Adles, D. Anderson, F. T. Avignone, A. Barabash, T. W. Bowyer, R. L. Brodzinski, et al. “The Majorana 76Ge double-beta decay project.” Nuclear Physics B - Proceedings Supplements 124 (January 1, 2003): 247–52. https://doi.org/10.1016/S0920-5632(03)02116-9.
Aalseth CE, Adles E, Anderson D, Avignone FT, Barabash A, Bowyer TW, et al. The Majorana 76Ge double-beta decay project. Nuclear Physics B - Proceedings Supplements. 2003 Jan 1;124:247–52.
Aalseth, C. E., et al. “The Majorana 76Ge double-beta decay project.” Nuclear Physics B - Proceedings Supplements, vol. 124, Jan. 2003, pp. 247–52. Scopus, doi:10.1016/S0920-5632(03)02116-9.
Aalseth CE, Adles E, Anderson D, Avignone FT, Barabash A, Bowyer TW, Brodzinski RL, Brudanin V, Champangne A, Collar JI, Doe PJ, Egorov S, Elliott SR, Farach HA, Gaitskell R, Jordan D, Jain RK, Kazkaz K, King G, Kochetov O, Konovalov S, Kouzes R, Miley HS, Palms JM, Pitts WK, Reeves JH, Robertson RGH, Rohm R, Sandukovsky S, Smith LE, Stekhanov V, Thompson RC, Tornow W, Umatov V, Warner R, Webb J, Wilkerson JF, Young A. The Majorana 76Ge double-beta decay project. Nuclear Physics B - Proceedings Supplements. 2003 Jan 1;124:247–252.
Journal cover image

Published In

Nuclear Physics B - Proceedings Supplements

DOI

ISSN

0920-5632

Publication Date

January 1, 2003

Volume

124

Start / End Page

247 / 252