Search for trinucleon decay in the Majorana Demonstrator

S. I. Alvis,I. J. Arnquist,F. T. Avignone,A. S. Barabash,C. J. Barton,V. Basu,F. E. Bertrand,B. Bos,V. Brudanin,M. Busch,M. Buuck,T. S. Caldwell,Y-D. Chan,C. D. Christofferson,Pinghan Chu,C. Cuesta,J. A. Detwiler,Yu. Efremenko,H. Ejiri,S. R. Elliott,T. Gilliss,G. K. Giovanetti,M. P. Green,J. Gruszko,I. S. Guinn,V. E. Guiseppe,C. R. Haufe,R. J. Hegedus,L. Hehn,R. Henning,D. Hervas Aguilar,E. W. Hoppe,M. A. Howe,K. J. Keeter,M. F. Kidd,S. I. Konovalov,R. T. Kouzes,A. M. Lopez,R. D. Martin,R. Massarczyk,S. J. Meijer,S. Mertens,J. Myslik,G. Othman,W. Pettus,A. Piliounis,A. W. P. Poon,D. C. Radford,J. Rager,A. L. Reine,K. Rielage,N. W. Ruof,B. Shanks,M. Shirchenko,D. Tedeschi,R. L. Varner,S. Vasilyev,B. R. White,J. F. Wilkerson,C. Wiseman,W. Xu,E. Yakushev,C.-H. Yu,V. Yumatov,I. Zhitnikov,B. X. Zhu,Majorana Collaboration; S. I. Alvis; I. J. Arnquist; F. T. Avignone; A. S. Barabash; C. J. Barton; V. Basu; F. E. Bertrand; B. Bos; V. Brudanin; M. Busch; M. Buuck; T. S. Caldwell; Y-D. Chan; C. D. Christofferson; Pinghan Chu; C. Cuesta; J. A. Detwiler; Yu. Efremenko; H. Ejiri; S. R. Elliott; T. Gilliss; G. K. Giovanetti; M. P. Green; J. Gruszko; I. S. Guinn; V. E. Guiseppe; C. R. Haufe; R. J. Hegedus; L. Hehn; R. Henning; D. Hervas Aguilar; E. W. Hoppe; M. A. Howe; K. J. Keeter; M. F. Kidd; S. I. Konovalov; R. T. Kouzes; A. M. Lopez; R. D. Martin; R. Massarczyk; S. J. Meijer; S. Mertens; J. Myslik; G. Othman; W. Pettus; A. Piliounis; A. W. P. Poon; D. C. Radford; J. Rager; A. L. Reine; K. Rielage; N. W. Ruof; B. Shanks; M. Shirchenko; D. Tedeschi; R. L. Varner; S. Vasilyev; B. R. White; J. F. Wilkerson; C. Wiseman; W. Xu; E. Yakushev; C.-H. Yu; V. Yumatov; I. Zhitnikov; B. X. Zhu; Majorana Collaboration

Search for trinucleon decay in the Majorana Demonstrator

S. I. Alvis,I. J. Arnquist,F. T. Avignone,A. S. Barabash,C. J. Barton,V. Basu,F. E. Bertrand,B. Bos,V. Brudanin,M. Busch,M. Buuck,T. S. Caldwell,Y-D. Chan,C. D. Christofferson,Pinghan Chu,C. Cuesta,J. A. Detwiler,Yu. Efremenko,H. Ejiri,S. R. Elliott,T. Gilliss,G. K. Giovanetti,M. P. Green,J. Gruszko,I. S. Guinn,V. E. Guiseppe,C. R. Haufe,R. J. Hegedus,L. Hehn,R. Henning,D. Hervas Aguilar,E. W. Hoppe,M. A. Howe,K. J. Keeter,M. F. Kidd,S. I. Konovalov,R. T. Kouzes,A. M. Lopez,R. D. Martin,R. Massarczyk,S. J. Meijer,S. Mertens,J. Myslik,G. Othman,W. Pettus,A. Piliounis,A. W. P. Poon,D. C. Radford,J. Rager,A. L. Reine,K. Rielage,N. W. Ruof,B. Shanks,M. Shirchenko,D. Tedeschi,R. L. Varner,S. Vasilyev,B. R. White,J. F. Wilkerson,C. Wiseman,W. Xu,E. Yakushev,C.-H. Yu,V. Yumatov,I. Zhitnikov,B. X. Zhu,Majorana Collaboration;S. I. Alvis;I. J. Arnquist;F. T. Avignone;A. S. Barabash;C. J. Barton;V. Basu;F. E. Bertrand;B. Bos;V. Brudanin;M. Busch;M. Buuck;T. S. Caldwell;Y-D. Chan;C. D. Christofferson;Pinghan Chu;C. Cuesta;J. A. Detwiler;Yu. Efremenko;H. Ejiri;S. R. Elliott;T. Gilliss;G. K. Giovanetti;M. P. Green;J. Gruszko;I. S. Guinn;V. E. Guiseppe;C. R. Haufe;R. J. Hegedus;L. Hehn;R. Henning;D. Hervas Aguilar;E. W. Hoppe;M. A. Howe;K. J. Keeter;M. F. Kidd;S. I. Konovalov;R. T. Kouzes;A. M. Lopez;R. D. Martin;R. Massarczyk;S. J. Meijer;S. Mertens;J. Myslik;G. Othman;W. Pettus;A. Piliounis;A. W. P. Poon;D. C. Radford;J. Rager;A. L. Reine;K. Rielage;N. W. Ruof;B. Shanks;M. Shirchenko;D. Tedeschi;R. L. Varner;S. Vasilyev;B. R. White;J. F. Wilkerson;C. Wiseman;W. Xu;E. Yakushev;C.-H. Yu;V. Yumatov;I. Zhitnikov;B. X. Zhu;Majorana Collaboration;

physical review d 2019 Vol. 99 pp. 072004-

167

collaboration2019physicalsearch1

Abstract

The Majorana Demonstrator is an ultra-low-background experiment searching for neutrinoless double-beta decay in Ge76. The heavily shielded array of germanium detectors, placed nearly a mile underground at the Sanford Underground Research Facility in Lead, South Dakota, also allows searches for new exotic physics. We present the first limits for trinucleon decay-specific modes and invisible decay modes for Ge isotopes. We find a half-life limit of 4.9×1025 yr for the decay Ge76(ppn)→Zn73e+π+ and 4.7×1025 yr for the decay Ge76(ppp)→Cu73e+π+π+. The half-life limit for the invisible triproton decay mode of Ge76 was found to be 7.5×1024 yr.

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majorana demonstrator half life invisible trinucleon decay ge76

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10.1103/physrevd.99.072004

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