First dark matter results from the XENON100 experiment.
First dark matter results from the XENON100 experiment.
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DOI：
10.1103/physrevlett.105.131302
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发表时间：
2010-05
影响因子：
8.6
通讯作者：
E. Aprile;K. Arisaka;F. Arneodo;A. Askin;L. Baudis;A. Behrens;K. Bokeloh;E. Brown;J. Cardoso;B. Choi;D. Cline;S. Fattori;A. Ferella;K. Giboni;A. Kish;C. W. Lam;J. Lamblin;R. Lang;K. Lim;J. Lopes;T. Undagoitia;Y. Mei;A. Fernandez;K. Ni;U. Oberlack;S. Orrigo;E. Pantic;G. Plante;A. Ribeiro;R. Santorelli;J. Santos;M. Schumann;M. Schumann;P. Shagin;A. Teymourian;D. Thers;E. Tziaferi;Hong-Wei Wang;C. Weinheimer
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文献类型：
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作者：
E. Aprile;K. Arisaka;F. Arneodo;A. Askin;L. Baudis;A. Behrens;K. Bokeloh;E. Brown;J. Cardoso;B. Choi;D. Cline;S. Fattori;A. Ferella;K. Giboni;A. Kish;C. W. Lam;J. Lamblin;R. Lang;K. Lim;J. Lopes;T. Undagoitia;Y. Mei;A. Fernandez;K. Ni;U. Oberlack;S. Orrigo;E. Pantic;G. Plante;A. Ribeiro;R. Santorelli;J. Santos;M. Schumann;M. Schumann;P. Shagin;A. Teymourian;D. Thers;E. Tziaferi;Hong-Wei Wang;C. Weinheimer
XENON100 实验在意大利大萨索国家实验室进行，旨在寻找在超低背景双相时间投影室中从 62 千克液态氙中散射的暗物质弱相互作用大质量粒子 (WIMP)。在这封信中，我们展示了对 2009 年 10 月和 11 月获取的 11.17 个活日非盲数据进行分析得到的第一个暗物质结果。在选定的 40 kg 基准目标中，在预定义的信号区域内，我们没有观察到任何事件，因此排除了 55 GeV/c² WIMP 的 3.4 × 10⁻⁴⁴ cm² 以上的自旋无关 WIMP 核子弹性散射截面。 90% 的置信度。低于 20 GeV/c²，该结果限制了 CoGeNT 和 DAMA 信号的解释，因为 CoGeNT 和 DAMA 信号是由于自旋无关、弹性、轻质量 WIMP 相互作用所致。
The XENON100 experiment, in operation at the Laboratori Nazionali del Gran Sasso in Italy, is designed to search for dark matter weakly interacting massive particles (WIMPs) scattering off 62 kg of liquid xenon in an ultralow background dual-phase time projection chamber. In this Letter, we present first dark matter results from the analysis of 11.17 live days of nonblind data, acquired in October and November 2009. In the selected fiducial target of 40 kg, and within the predefined signal region, we observe no events and hence exclude spin-independent WIMP-nucleon elastic scattering cross sections above 3.4 × 10⁻⁴⁴ cm² for 55 GeV/c² WIMPs at 90% confidence level. Below 20 GeV/c², this result constrains the interpretation of the CoGeNT and DAMA signals as being due to spin-independent, elastic, light mass WIMP interactions.