CUORE-0 结果与 CUORE 实验展望
摘要
CUORE（地下稀有事件低温观测站）实验拥有 741 kg 的 TeO2 晶体，并在感兴趣区域具有 5 keV (0.2%) 的优异能量分辨率，旨在以前所未有的灵敏度搜索 130Te 的无中微子双贝塔衰变。CUORE 预计于 2015 年开始数据采集，目前正处于 LNGS 的高级建设阶段。CUORE projected 的无中微子双贝塔衰变半衰期灵敏度在五年运行时间内为 1.6E26 年 (1 sigma)（90% 置信水平下为 9.5E25 年），对应于 40-100 meV (50-130 meV) 范围内的有效 Majorana 质量上限。利用辅助测热探测器进一步抑制背景，可以提高 CUORE 的灵敏度以及测热探测器在全面分析中微子质量倒序层级方面的竞争力。CUORE-0 旨在测试并展示即将进行的 CUORE 实验的性能。它由单个 CUORE 塔组成（52 个 750 g 的 TeO2 测热辐射计，排列成 13 层结构），其材料和组装程序严格遵循 CUORE 规范。CUORE-0 本身就是一个独立的实验，预计在一年运行时间内达到对 130Te 无中微子双贝塔衰变半衰期约 3E24 年的灵敏度。我们展示了数据的更新，对应曝光量为 18.1 kg y。背景分析表明，CUORE 的性能目标已得到满足，而灵敏度目标也在可及范围内。
引用
@article{arxiv.1502.02576,
title = {CUORE-0 results and prospects for the CUORE experiment},
author = {CUORE Collaboration and D. R. Artusa and F. T. Avignone and O. Azzolini and M. Balata and T. I. Banks and G. Bari and J. Beeman and F. Bellini and A. Bersani and M. Biassoni and C. Brofferio and C. Bucci and X. Z. Cai and A. Camacho and A. Caminata and L. Canonica and X. Cao and S. Capelli and L. Cappelli and L. Carbone and L. Cardani and N. Casali and L. Cassina and D. Chiesa and N. Chott and M. Clemenza and S. Copello and C. Cosmelli and O. Cremonesi and R. J. Creswick and J. S. Cushman and I. Dafinei and A. Dally and V. Datskov and S. Dell'Oro and M. Deninno and S. Di Domizio and M. L. di Vacri and A. Drobizhev and L. Ejzak and D. Q. Fang and H. A. Farach and M. Faverzani and G. Fernandes and E. Ferri and F. Ferroni and E. Fiorini and M. A. Franceschi and S. J. Freedman and B. K. Fujikawa and A. Giachero and L. Gironi and A. Giuliani and P. Gorla and C. Gotti and T. D. Gutierrez and E. E. Haller and K. Han and K. M. Heeger and R. Hennings-Yeomans and K. P. Hickerson and H. Z. Huang and R. Kadel and K. Kazkaz and G. Keppel and Yu. G. Kolomensky and Y. L. Li and C. Ligi and K. E. Lim and X. Liu and Y. G. Ma and C. Maiano and M. Maino and M. Martinez and R. H. Maruyama and Y. Mei and N. Moggi and S. Morganti and T. Napolitano and M. Nastasi and S. Nisi and C. Nones and E. B. Norman and A. Nucciotti and T. O'Donnell and F. Orio and D. Orlandi and J. L. Ouellet and C. E. Pagliarone and M. Pallavicini and V. Palmieri and L. Pattavina and M. Pavan and M. Pedretti and G. Pessina and V. Pettinacci and G. Piperno and C. Pira and S. Pirro and S. Pozzi and E. Previtali and V. Rampazzo and C. Rosenfeld and C. Rusconi and E. Sala and S. Sangiorgio and N. D. Scielzo and M. Sisti and A. R. Smith and L. Taffarello and M. Tenconi and F. Terranova and W. D. Tian and C. Tomei and S. Trentalange and G. Ventura and M. Vignati and B. S. Wang and H. W. Wang and L. Wielgus and J. Wilson and L. A. Winslow and T. Wise and A. Woodcraft and L. Zanotti and C. Zarra and G. Q. Zhang and B. X. Zhu and S. Zucchelli},
journal= {arXiv preprint arXiv:1502.02576},
year = {2015}
}
备注
10 pages, 3 figures, to appear in the proceedings of NEUTRINO 2014, 26th International Conference on Neutrino Physics and Astrophysics, 2-7 June 2014, held at Boston, Massachusetts, USA