Improved Limits on Scattering of Weakly Interacting Massive Particles from Reanalysis of 2013 LUX Data.
Improved Limits on Scattering of Weakly Interacting Massive Particles from Reanalysis of 2013 LUX Data.
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DOI：
10.1103/physrevlett.116.161301
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发表时间：
2015-12
影响因子：
8.6
通讯作者：
D. Akerib;H. Araújo;X. Bai;A. Bailey;J. Balajthy;P. Beltrame;E. Bernard;A. Bernstein;T. Biesiadzinski;E. Boulton;A. Bradley;R. Bramante;S. Cahn;M. Carmona-Benitez;C. Chan;J. Chapman;A. A. Chiller-A.;C. Chiller;A. Currie;J. Cutter;T. Davison;L. de Viveiros;A. Dobi;J. Dobson;E. Druszkiewicz;B. Edwards;C. Faham;S. Fiorucci;R. Gaitskell;V. Gehman;C. Ghag;K. Gibson;M. Gilchriese;C. Hall;M. Hanhardt;S. Haselschwardt;S. Hertel;D. Hogan;M. Horn;D. Huang;C. Ignarra;M. Ihm;R. Jacobsen;W. Ji;K. Kazkaz;D. Khaitan;R. Knoche;N. Larsen;C. Lee;B. Lenardo;K. Lesko;A. Lindote;M. Lopes;D. Malling;A. Manalaysay;R. Mannino;M. F. Marzioni;D. Mckinsey;D. Mei;J. Mock;M. Moongweluwan;J. Morad;A. Murphy;C. Nehrkorn;H. Nelson;F. Neves;K. O'Sullivan;K. Oliver-Mallory;R. Ott;K. Palladino;M. Pangilinan;E. K. Pease;P. Phelps;L. Reichhart;C. Rhyne;S. Shaw;T. Shutt;C. Silva;V. Solovov;P. Sorensen;S. Stephenson;T. Sumner;M. Szydagis;D. Taylor;W. Taylor;B. Tennyson;P. Terman;D. Tiedt;W. To;M. Tripathi;L. Tvrznikova;S. Uvarov;J. Verbus;R. Webb;J. White;T. J. Whitis;M. Witherell;F. Wolfs;K. Yazdani;S. Young;C. Zhang
中科院分区：
文献类型：
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作者：
D. Akerib;H. Araújo;X. Bai;A. Bailey;J. Balajthy;P. Beltrame;E. Bernard;A. Bernstein;T. Biesiadzinski;E. Boulton;A. Bradley;R. Bramante;S. Cahn;M. Carmona-Benitez;C. Chan;J. Chapman;A. A. Chiller-A.;C. Chiller;A. Currie;J. Cutter;T. Davison;L. de Viveiros;A. Dobi;J. Dobson;E. Druszkiewicz;B. Edwards;C. Faham;S. Fiorucci;R. Gaitskell;V. Gehman;C. Ghag;K. Gibson;M. Gilchriese;C. Hall;M. Hanhardt;S. Haselschwardt;S. Hertel;D. Hogan;M. Horn;D. Huang;C. Ignarra;M. Ihm;R. Jacobsen;W. Ji;K. Kazkaz;D. Khaitan;R. Knoche;N. Larsen;C. Lee;B. Lenardo;K. Lesko;A. Lindote;M. Lopes;D. Malling;A. Manalaysay;R. Mannino;M. F. Marzioni;D. Mckinsey;D. Mei;J. Mock;M. Moongweluwan;J. Morad;A. Murphy;C. Nehrkorn;H. Nelson;F. Neves;K. O'Sullivan;K. Oliver-Mallory;R. Ott;K. Palladino;M. Pangilinan;E. K. Pease;P. Phelps;L. Reichhart;C. Rhyne;S. Shaw;T. Shutt;C. Silva;V. Solovov;P. Sorensen;S. Stephenson;T. Sumner;M. Szydagis;D. Taylor;W. Taylor;B. Tennyson;P. Terman;D. Tiedt;W. To;M. Tripathi;L. Tvrznikova;S. Uvarov;J. Verbus;R. Webb;J. White;T. J. Whitis;M. Witherell;F. Wolfs;K. Yazdani;S. Young;C. Zhang
我们从2013年大型地下氙暗物质实验的数据中提出了对弱相互作用大质量粒子（WIMP）-核散射的限制，包括1.4×10^{4} kg/天的搜索曝光。这种新的分析包括几个方面的进展：单光子校准闪烁波长，改进的事件重建算法，修订的背景模型，包括事件起源于探测器壁在一个扩大的基准体积，和新的校准从衰变的注入氚β源和从运动学约束核反冲下降到1.1 keV。灵敏度，特别是低质量的WIMP，增强相比，我们以前的结果，其中建模的信号仅高于3千电子伏的最小能量。在标准的暗物质晕假设下，在4 GeV c^{-2}以上的质量范围内，这些新的结果给出了自旋无关的WIMP-核子截面的最严格的直接限制。90% C. L。在33 GeV c^{-2} WIMP质量下，上限最小值为0.6 zb。
We present constraints on weakly interacting massive particles (WIMP)-nucleus scattering from the 2013 data of the Large Underground Xenon dark matter experiment, including 1.4×10^{4} kg day of search exposure. This new analysis incorporates several advances: single-photon calibration at the scintillation wavelength, improved event-reconstruction algorithms, a revised background model including events originating on the detector walls in an enlarged fiducial volume, and new calibrations from decays of an injected tritium β source and from kinematically constrained nuclear recoils down to 1.1 keV. Sensitivity, especially to low-mass WIMPs, is enhanced compared to our previous results which modeled the signal only above a 3 keV minimum energy. Under standard dark matter halo assumptions and in the mass range above 4 GeV c^{-2}, these new results give the most stringent direct limits on the spin-independent WIMP-nucleon cross section. The 90% C.L. upper limit has a minimum of 0.6 zb at 33 GeV c^{-2} WIMP mass.