We propose a new beam dump experiment at future colliders with electron($e^-$) and positron ($e^+$) beams, BDee, which will provide a new possibilityto search for hidden particles, like hidden photon. If a particle detector isinstalled behind the beam dump, it can detect the signal of in-flight decay ofthe hidden particles produced by the scatterings of $e^\pm$ beams off materialsfor dumping. We show that, compared to past experiments, BDee (in particularBDee at $e^+e^-$ linear collider) significantly enlarges the parameter regionwhere the signal of the hidden particle can be discovered.
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机译：我们建议在未来的对撞机上使用电子（$ e ^-$）和正电子（$ e ^ + $）束BDee进行新的束流发射实验，这将为寻找隐藏粒子（例如隐藏光子）提供新的可能性。如果将粒子检测器安装在光束收集器的后面，它可以检测到由于隐藏在物体上的$ e ^ \ pm $光束的散射而产生的隐藏粒子在飞行中的衰减信号。我们表明，与过去的实验相比，BDee（特别是在$ e ^ + e ^-$线性对撞机上的BDee）显着扩大了可以发现隐藏粒子信号的参数区域。
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