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arXiv 2003.13407physics.ins-dethep-exnucl-ex
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DARWIN天文台对$^{136}$中微子双β衰变的灵敏度

Sensitivity of the DARWIN observatory to the neutrinoless double beta decay of $^{136}$Xe

F. Agostini, S. E. M. Ahmed Maouloud, L. Althueser, F. Amaro, B. Antunovic, E. Aprile, L. Baudis, D. Baur, Y. Biondi, A. Bismark, P. A. Breur, A. Brown, G. Brun… 展开作者

F. Agostini, S. E. M. Ahmed Maouloud, L. Althueser, F. Amaro, B. Antunovic, E. Aprile, L. Baudis, D. Baur, Y. Biondi, A. Bismark, P. A. Breur, A. Brown, G. Bruno, R. Budnik, C. Capelli, J. Cardoso, D. Cichon, M. Clark, A. P. Colijn, J. J. Cuenca-García, J. P. Cussonneau, M. P. Decowski, A. Depoian, J. Dierle, P. Di Gangi, A. Di Giovanni, S. Diglio, J. M. F. dos Santos, G. Drexlin, K. Eitel, R. Engel, A. D. Ferella, H. Fischer, M. Galloway, F. Gao, F. Girard, F. Glück, L. Grandi, R. Größle, R. Gumbsheimer, S. Hansmann-Menzemer, F. Jörg, G. Khundzakishvili, A. Kopec, F. Kuger, L. M. Krauss, H. Landsman, R. F. Lang, S. Lindemann, M. Lindner, J. A. M. Lopes, A. Loya Villalpando, C. Macolino, A. Manfredini, T. Marrodán Undagoitia, J. Masbou, E. Masson, P. Meinhardt, S. Milutinovic, A. Molinario, C. M. B. Monteiro, M. Murra, U. G. Oberlack, M. Pandurovic, R. Peres, J. Pienaar, M. Pierre, V. Pizzella, J. Qin, D. Ramírez García, S. Reichard, N. Rupp, P. Sanchez-Lucas, G. Sartorelli, D. Schulte, M. Schumann, L. Scotto Lavina, M. Selvi, M. Silva, H. Simgen, M. Steidl, A. Terliuk, C. Therreau, D. Thers, K. Thieme, R. Trotta, C. D. Tunnell, K. Valerius, G. Volta, D. Vorkapic, C. Weinheimer, C. Wittweg, J. Wolf, J. P. Zopounidis, K. Zuber

摘要:

达尔文天文台是一个拟议中的下一代实验,以寻找粒子暗物质和$^{136}$的无中微子双β衰变。在其50吨$\,$总天然氙存量中,40吨$\,$将成为时间投影室的活动靶,因此该时间投影室含有约3.6吨的$^{136}$氙。在这里,我们表明,其预计的半衰期灵敏度为$2.4\times10^{27}\,$年,使用的基准体积为5吨的天然氙和10 $\,$年的操作与背景率小于0.2 $~$事件/(t $\cdot$年)的能量区域的利益。这种灵敏度是基于一个详细的蒙特卡罗模拟研究的背景和事件拓扑结构的大,均匀的目标。达尔文将在其科学范围内与专门的双β衰变实验相媲美,该实验使用了富含$^{136}$的氙。

英文摘要:

The DARWIN observatory is a proposed next-generation experiment to search for particle dark matter and for the neutrinoless double beta decay of $^{136}$Xe. Out of its 50$\,$t total natural xenon inventory, 40$\,$t will be the active target of a time projection chamber which thus contains about 3.6 t of $^{136}$Xe. Here, we show that its projected half-life sensitivity is $2.4\times10^{27}\,$yr, using a fiducial volume of 5t of natural xenon and 10$\,$yr of operation with a background rate of less than 0.2$~$events/(t$\cdot$yr) in the energy region of interest. This sensitivity is based on a detailed Monte Carlo simulation study of the background and event topologies in the large, homogeneous target. DARWIN will be comparable in its science reach to dedicated double beta decay experiments using xenon enriched in $^{136}$Xe.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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