论文标题
过去的爆炸：BEBC WA66 Beam Dump对黑暗区域的约束实验
Blast from the past: Constraints on the dark sector from the BEBC WA66 beam dump experiment
论文作者
论文摘要
我们从1982年CERN-WA-066 Beam Dump实验中观察到的前向电子散射事件的数量来得出毫米级的黑暗状态以及带有电或磁性偶极矩的颗粒。黑暗状态是由400 GEV质子束产生的主要是通过在梁转储中产生的介子的衰减，而缺乏多余的事件的位置范围延伸至GEV质量。这些改善了所有其他实验的界限，尤其是魅力II。
We derive limits on millicharged dark states, as well as particles with electric or magnetic dipole moments, from the number of observed forward electron scattering events at the Big European Bubble Chamber in the 1982 CERN-WA-066 beam dump experiment. The dark states are produced by the 400 GeV proton beam primarily through the decays of mesons produced in the beam dump, and the lack of excess events places bounds extending up to GeV masses. These improve on bounds from all other experiments, in particular CHARM II.
