由2013年LUX数据重新分析得到的弱相互作用大质量粒子散射的改进限制
宇宙学与河外天体物理
2016-05-17 v3 天体物理仪器与方法
高能物理 - 实验
仪器与探测器
摘要
我们给出了来自大型地下氙（LUX）暗物质实验2013年数据的弱相互作用大质量粒子（WIMP）-核散射约束，包括 的搜索曝光量。这一新分析结合了若干进展：在闪烁波长处的单光子校准、改进的事件重建算法、在扩大的 fiducial 体积中包含探测器壁上起源事件的修正背景模型，以及来自注入氚 源衰变和动力学约束低至 1.1 keV 的核反冲的新校准。与之前仅对高于 3 keV 最小能量的信号建模的结果相比，灵敏度尤其是针对低质量 WIMP 得到了增强。在标准暗物质晕假设下且质量范围高于 4 时，这些新结果给出了自旋无关 WIMP-核子截面的最严格直接限制。90% C.L. 上限在 33 WIMP 质量处有一个 0.6 zb 的最小值。
引用
@article{arxiv.1512.03506,
title = {Improved Limits on Scattering of Weakly Interacting Massive Particles from Reanalysis of 2013 LUX data},
author = {LUX Collaboration and D. S. Akerib and H. M. Araújo and X. Bai and A. J. Bailey and J. Balajthy and P. Beltrame and E. P. Bernard and A. Bernstein and T. P. Biesiadzinski and E. M. Boulton and A. Bradley and R. Bramante and S. B. Cahn and M. C. Carmona-Benitez and C. Chan and J. J. Chapman and A. A. Chiller and C. Chiller and A. Currie and J. E. Cutter and T. J. R. Davison and L. de Viveiros and A. Dobi and J. E. Y. Dobson and E. Druszkiewicz and B. N. Edwards and C. H. Faham and S. Fiorucci and R. J. Gaitskell and V. M. Gehman and C. Ghag and K. R. Gibson and M. G. D. Gilchriese and C. R. Hall and M. Hanhardt and S. J. Haselschwardt and S. A. Hertel and D. P. Hogan and M. Horn and D. Q. Huang and C. M. Ignarra and M. Ihm and R. G. Jacobsen and W. Ji and K. Kazkaz and D. Khaitan and R. Knoche and N. A. Larsen and C. Lee and B. G. Lenardo and K. T. Lesko and A. Lindote and M. I. Lopes and D. C. Malling and A. Manalaysay and R. L. Mannino and M. F. Marzioni and D. N. McKinsey and D. M. Mei and J. Mock and M. Moongweluwan and J. A. Morad and A. St. J. Murphy and C. Nehrkorn and H. N. Nelson and F. Neves and K. O`Sullivan and K. C. Oliver-Mallory and R. A. Ott and K. J. Palladino and M. Pangilinan and E. K. Pease and P. Phelps and L. Reichhart and C. Rhyne and S. Shaw and T. A. Shutt and C. Silva and V. N. Solovov and P. Sorensen and S. Stephenson and T. J. Sumner and M. Szydagis and D. J. Taylor and W. Taylor and B. P. Tennyson and P. A. Terman and D. R. Tiedt and W. H. To and M. Tripathi and L. Tvrznikova and S. Uvarov and J. R. Verbus and R. C. Webb and J. T. White and T. J. Whitis and M. S. Witherell and F. L. H. Wolfs and K. Yazdani and S. K. Young and C. Zhang},
journal= {arXiv preprint arXiv:1512.03506},
year = {2016}
}
备注
Accepted by Phys. Rev. Lett