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arXiv 1207.1815astro-ph.COhep-exphysics.ins-det
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用EDELWEISS-II热电离探测器寻找低质量WIMP

A search for low-mass WIMPs with EDELWEISS-II heat-and-ionization detectors

EDELWEISS Collaboration, E. Armengaud, C. Augier, A. Benoît, L. Bergé, T. Bergmann, J. Blümer, A. Broniatowski, V. Brudanin, B. Censier, M. Chapellier, F. Charl… 展开作者

EDELWEISS Collaboration, E. Armengaud, C. Augier, A. Benoît, L. Bergé, T. Bergmann, J. Blümer, A. Broniatowski, V. Brudanin, B. Censier, M. Chapellier, F. Charlieux, F. Couëdo, P. Coulter, G. A. Cox, J. Domange, A. A. Drillien, L. Dumoulin, K. Eitel, D. Filosofov, N. Fourches, J. Gascon, G. Gerbier, J. Gironnet, M. Gros, G. Heuermann, S. Henry, S. Hervé, A. Juillard, M. Kleifges, H. Kluck, V. Kozlov, H. Kraus, V. A. Kudryavtsev, H. Le Sueur, P. Loaiza, S. Marnieros, A. Menshikov, X. -F. Navick, C. Nones, E. Olivieri, P. Pari, B. Paul, M. Robinson, S. Rozov, V. Sanglard, B. Schmidt, B. Siebenborn, D. Tcherniakhovski, A. S. Torrento-Coello, L. Vagneron, R. J. Walker, M. Weber, E. Yakushev, X. Zhang

摘要:

我们使用EDELWEISS在2009 - 2010年从四个配备热传感器和电极设计(ID)的锗探测器收集的数据报告了对低能(E < 20 keV)WIMP诱导的核反冲的搜索,该探测器可以有效地拒绝几个背景源。数据表明,没有证据表明,指数分布的低能核反冲,可归因于WIMP弹性散射后,曝光113公斤。对于质量为10 GeV的WIMP,在WIMP搜索区域中观测到一个事件,导致自旋无关的WIMP-核子散射截面的90% CL极限为1.0 × 10 ^-5 pb,这限制了与CoGeNT、DAMA和CRESST实验报告的结果相关的参数空间。

英文摘要:

We report on a search for low-energy (E < 20 keV) WIMP-induced nuclear recoils using data collected in 2009 - 2010 by EDELWEISS from four germanium detectors equipped with thermal sensors and an electrode design (ID) which allows to efficiently reject several sources of background. The data indicate no evidence for an exponential distribution of low-energy nuclear recoils that could be attributed to WIMP elastic scattering after an exposure of 113 kg.d. For WIMPs of mass 10 GeV, the observation of one event in the WIMP search region results in a 90% CL limit of 1.0x10^-5 pb on the spin-independent WIMP-nucleon scattering cross-section, which constrains the parameter space associated with the findings reported by the CoGeNT, DAMA and CRESST experiments.

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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