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arXiv 1012.5078astro-ph.COhep-ex
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用CDMS II实验寻找非弹性暗物质

Search for inelastic dark matter with the CDMS II experiment

CDMS Collaboration, Z. Ahmed, D. S. Akerib, S. Arrenberg, C. N. Bailey, D. Balakishiyeva, L. Baudis, D. A. Bauer, P. L. Brink, T. Bruch, R. Bunker, B. Cabrera, … 展开作者

CDMS Collaboration, Z. Ahmed, D. S. Akerib, S. Arrenberg, C. N. Bailey, D. Balakishiyeva, L. Baudis, D. A. Bauer, P. L. Brink, T. Bruch, R. Bunker, B. Cabrera, D. O. Caldwell, J. Cooley, E. do Couto e Silva, P. Cushman, M. Daal, F. DeJongh, P. Di Stefano, M. R. Dragowsky, L. Duong, S. Fallows, E. Figueroa-Feliciano, J. Filippini, J. Fox, M. Fritts, S. R. Golwala, J. Hall, R. Hennings-Yeomans, S. A. Hertel, D. Holmgren, L. Hsu, M. E. Huber, O. Kamaev, M. Kiveni, M. Kos, S. W. Leman, S. Liu, R. Mahapatra, V. Mandic, K. A. McCarthy, N. Mirabolfathi, D. Moore, H. Nelson, R. W. Ogburn, A. Phipps, M. Pyle, X. Qiu, E. Ramberg, W. Rau, M. Razeti, A. Reisetter, R. Resch, T. Saab, B. Sadoulet, J. Sander, R. W. Schnee, D. N. Seitz, B. Serfass, K. M. Sundqvist, M. Tarka, P. Wikus, S. Yellin, J. Yoo, B. A. Young, J. Zhang

摘要:

结果是从整个五塔数据集获得的低温暗物质搜索(CDMS II)实验在苏丹地下实验室,与969千克-天的曝光重新分析。分析窗口扩展到150 keV的反冲能量,并定义了一个改进的表面事件背景抑制切割,以增加实验的灵敏度,非弹性暗物质(iDM)模型。三个暗物质候选者在25 keV和150 keV之间被发现。在这个能量范围内观察到三个或更多背景事件的概率是11%。由于这些事件的发生,对iDM参数空间的约束比我们之前的分析(使用10-100 keV的能量窗口)稍微不那么严格。

英文摘要:

Results are presented from a reanalysis of the entire five-tower data set acquired with the Cryogenic Dark Matter Search (CDMS II) experiment at the Soudan Underground Laboratory, with an exposure of 969 kg-days. The analysis window was extended to a recoil energy of 150 keV, and an improved surface-event background-rejection cut was defined to increase the sensitivity of the experiment to the inelastic dark matter (iDM) model. Three dark matter candidates were found between 25 keV and 150 keV. The probability to observe three or more background events in this energy range is 11%. Because of the occurrence of these events the constraints on the iDM parameter space are slightly less stringent than those from our previous analysis, which used an energy window of 10-100 keV.

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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