CDMS II 锗数据改进的 WIMP 搜索范围
高能物理 - 实验
2015-10-15 v2 宇宙学与河外天体物理
摘要
利用改进的电荷脉冲拟合算法重新处理了 Soudan 地下实验室 5 塔运行期间的 CDMS II 数据。两种新的分析技术被应用于 612 kg 天的锗探测器 WIMP 搜索曝光量，以排除表面事件背景。还完成了一项扩展分析，将 10 keV 的分析阈值降低至 5 keV，以提高对 8 GeV/ 附近 WIMP 质量的灵敏度。盲测解除后，在 10 keV 以上沉积能量处未发现候选事件，而在低阈值分析中发现了 6 个事件。这使得在 90\% 置信度下，60 GeV/ 和 8.6 GeV/ WIMP 的最小 WIMP-核子自旋无关散射截面限制分别为 和 cm。相较于之前的 CDMS II 结果，这对 60 (8.6) GeV/ WIMP 的改进因子为 2.4 (2.7)。
引用
@article{arxiv.1504.05871,
title = {Improved WIMP-search reach of the CDMS II germanium data},
author = {R. Agnese and A. J. Anderson and M. Asai and D. Balakishiyeva and D. Barker and R. Basu Thakur and D. A. Bauer and J. Billard and A. Borgland and M. A. Bowles and D. Brandt and P. L. Brink and R. Bunker and B. Cabrera and D. O. Caldwell and R. Calkins and D. G. Cerdeño and H. Chagani and Y. Chen and J. Cooley and B. Cornell and C. H. Crewdson and P. Cushman and M. Daal and P. C. F. Di Stefano and T. Doughty and L. Esteban and S. Fallows and E. Figueroa-Feliciano and G. L. Godfrey and S. R. Golwala and J. Hall and H. R. Harris and S. A. Hertel and T. Hofer and D. Holmgren and L. Hsu and M. E. Huber and D. Jardin and A. Jastram and O. Kamaev and B. Kara and M. H. Kelsey and A. Kennedy and M. Kiveni and K. Koch and A. Leder and B. Loer and E. Lopez Asamar and P. Lukens and R. Mahapatra and V. Mandic and K. A. McCarthy and N. Mirabolfathi and R. A. Moffatt and S. M. Oser and K. Page and W. A. Page and R. Partridge and M. Pepin and A. Phipps and K. Prasad and M. Pyle and H. Qiu and W. Rau and P. Redl and A. Reisetter and Y. Ricci and H. E. Rogers and T. Saab and B. Sadoulet and J. Sander and K. Schneck and R. W. Schnee and S. Scorza and B. Serfass and B. Shank and D. Speller and D. Toback and S. Upadhyayula and A. N. Villano and B. Welliver and J. S. Wilson and D. H. Wright and X. Yang and S. Yellin and J. J. Yen and B. A. Young and J. Zhang},
journal= {arXiv preprint arXiv:1504.05871},
year = {2015}
}
备注
25 pages, 15 figures, slightly updated organization and text consistent with PRD referee process, Fig. 14 updated