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Sensitivity and discovery potential of the proposed nEXO experiment to neutrinoless double- β decay

2018; American Physical Society; Volume: 97; Issue: 6 Linguagem: Inglês

10.1103/physrevc.97.065503

2470-0002

J. B. Albert, G. Anton, I. J. Arnquist, I. Badhrees, P. S. Barbeau, D. Beck, V. Belov, F. Bourque, J. Brodsky, A. Brown, T. Brunner, A. Burenkov, G. F. Cao, Liqiang Cao, W. R. Cen, C. Chambers, Serge A. Charlebois, M. Chiu, B. T. Cleveland, Minor J. Coon, A. Craycraft, W. Cree, M. Côté, J. Dalmasson, T. Daniels, S. J. Daugherty, J. Daughhetee, S. Delaquis, A. Der Mesrobian-Kabakian, R. DeVoe, T. Didberidze, J. Dilling, Ying Ding, M. J. Dolinski, A. Dragone, L. Fabris, W. M. Fairbank, J. Farine, S. Feyzbakhsh, Réjean Fontaine, D. Fudenberg, G. Giacomini, R. Gornea, K. Graham, G. Gratta, E. V. Hansen, Devin K. Harris, M. Hasan, M. Heffner, E. W. Hoppe, A. House, P. Hufschmidt, M. Hughes, J. Hößl, Y. Ito, A. Iverson, A. Jamil, M. J. Jewell, X. S. Jiang, T. N. Johnson, S. Johnston, A. Karelin, L. J. Kaufman, Ryan Killick, T. Koffas, S. Kravitz, R. Krücken, A. Kuchenkov, K.S. Kumar, Y. Lan, D. S. Leonard, Gordon Li, S. Li, Z. Li, C. Licciardi, Y. H. Lin, R. MacLellan, Thilo Michel, B. Mong, D. Moore, K. Murray, J. Newby, Zhe Ning, O. Njoya, F. Nolet, K. Odgers, A. Odian, M. Oriunno, J. L. Orrell, I. Ostrovskiy, C.T. Overman, G.S. Ortega, Samuel Parent, A. Piepke, A. Pocar, J.‐F. Pratte, Delong Qiu, V. Radeka, E. Raguzin, T. Rao, S. Rescia, F. Retière, A. Robinson, T. Rossignol, P.C. Rowson, N. Roy, R. Saldanha, S. Sangiorgio, Susann Schmidt, Judith Schneider, A. Schubert, D. Sinclair, K. Skarpaas, A. K. Soma, G. St-Hilaire, V. Stekhanov, T. Stiegler, X. Sun, M. Tarka, J. Todd, T. Tolba, R. Tsang, T. Tsang, F. Vachon, V. Veeraraghavan, G. Visser, P. Vogel, J.-L. Vuilleumier, M. Wagenpfeil, Q. Wang, M. Weber, W. Wei, Liangjian Wen, U. Wichoski, Gerrit Wrede, Sen Wu, W. Wu, L. Yang, Y.-R. Yen, O. Zeldovich, J. Zettlemoyer, Xuhao Zhang, J. Zhao, Y. Zhou, T. Ziegler,

Particle physics theoretical and experimental studies

The next-generation Enriched Xenon Observatory (nEXO) is a proposed experiment to search for neutrinoless double beta ($0\nu\beta\beta$) decay in $^{136}$Xe with a target half-life sensitivity of approximately $10^{28}$ years using $5\times10^3$ kg of isotopically enriched liquid-xenon in a time projection chamber. This improvement of two orders of magnitude in sensitivity over current limits is obtained by a significant increase of the $^{136}$Xe mass, the monolithic and homogeneous configuration of the active medium, and the multi-parameter measurements of the interactions enabled by the time projection chamber. The detector concept and anticipated performance are presented based upon demonstrated realizable background rates.