Aprile E, Aalbers J, Agostini F, Alfonsi M, Althueser L, Amaro F D, Anthony M, Antochi V C, Arneodo F, Baudis L, Bauermeister B, Benabderrahmane M L, Berger T, Breur P A, Brown A, Brown A, Brown E, Bruenner S, Bruno G, Budnik R, Capelli C, Cardoso J M R, Cichon D, Coderre D, Colijn A P, Conrad J, Cussonneau J P, Decowski M P, de Perio P, Di Gangi P, Di Giovanni A, Diglio S, Elykov A, Eurin G, Fei J, Ferella A D, Fieguth A, Fulgione W, Gallo Rosso A, Galloway M, Gao F, Garbini M, Grandi L, Greene Z, Hasterok C, Hogenbirk E, Howlett J, Iacovacci M, Itay R, Joerg F, Kazama S, Kish A, Koltman G, Kopec A, Landsman H, Lang R F, Levinson L, Lin Q, Lindemann S, Lindner M, Lombardi F, Lopes J A M, López Fune E, Macolino C, Mahlstedt J, Manfredini A, Marignetti F, Marrodán Undagoitia T, Masbou J, Masson D, Mastroianni S, Messina M, Micheneau K, Miller K, Molinario A, Morå K, Mosbacher Y, Murra M, Naganoma J, Ni K, Oberlack U, Odgers K, Pelssers B, Piastra F, Pienaar J, Pizzella V, Plante G, Podviianiuk R, Priel N, Qiu H, Ramírez García D, Reichard S, Riedel B, Rizzo A, Rocchetti A, Rupp N, Dos Santos J M F, Sartorelli G, Šarčević N, Scheibelhut M, Schindler S, Schreiner J, Schulte D, Schumann M, Scotto Lavina L, Selvi M, Shagin P, Shockley E, Silva M, Simgen H, Therreau C, Thers D, Toschi F, Trinchero G, Tunnell C, Upole N, Vargas M, Wack O, Wang H, Wang Z, Wei Y, Weinheimer C, Wenz D, Wittweg C, Wulf J, Xu Z, Ye J, Zhang Y, Zhu T, Zopounidis J P
Physics Department, Columbia University, New York, New York 10027, USA.
Oskar Klein Centre, Department of Physics, Stockholm University, AlbaNova, Stockholm SE-10691, Sweden.
Phys Rev Lett. 2019 Apr 12;122(14):141301. doi: 10.1103/PhysRevLett.122.141301.
We report the first experimental results on spin-dependent elastic weakly interacting massive particle (WIMP) nucleon scattering from the XENON1T dark matter search experiment. The analysis uses the full ton year exposure of XENON1T to constrain the spin-dependent proton-only and neutron-only cases. No significant signal excess is observed, and a profile likelihood ratio analysis is used to set exclusion limits on the WIMP-nucleon interactions. This includes the most stringent constraint to date on the WIMP-neutron cross section, with a minimum of 6.3×10^{-42} cm^{2} at 30 GeV/c^{2} and 90% confidence level. The results are compared with those from collider searches and used to exclude new parameter space in an isoscalar theory with an axial-vector mediator.
我们报告了来自XENON1T暗物质搜索实验的关于自旋相关弹性弱相互作用大质量粒子（WIMP）与核子散射的首批实验结果。该分析使用了XENON1T的全年曝光数据来约束仅自旋相关的质子和仅中子的情况。未观察到显著的信号过量，并且使用轮廓似然比分析来设定WIMP与核子相互作用的排除极限。这包括了迄今为止对WIMP - 中子截面最严格的约束，在30 GeV/c²和90%置信水平下最小值为6.3×10⁻⁴² cm²。将结果与对撞机搜索的结果进行了比较，并用于排除具有轴矢媒介子的同位旋标量理论中的新参数空间。
