论文标题
从$ c $ - $τ$工厂用两极分化的电子梁探测隐藏区域的光异位物
Probing light exotics from a hidden sector at $c$-$τ$ factories with polarized electron beams
论文作者
论文摘要
未来的$ c $ - $τ$工厂是研究粒子物理（SM）标准模型扩展的自然场所，新的长寿命虚弱的相互作用的粒子足以在电子峰碰撞中产生。我们研究了这些机器在探索此类扩展方面的前景，该扩展强调了极化梁在摆脱缺失能量签名的SM不可还原背景方面的作用。我们以Novosibirsk的$ C $ -C $ - $τ$ Project的示例说明了这一点，该电子束的设计为极化，以实现对HADRONIC共振和$τ$ -Leptons的更高敏感性。我们使用隐藏的光子，带有毫米的颗粒（费米和标量），带有$ z'$玻色子和轴突样颗粒的模型。我们发现80 \％的电子束极化显着提高了观察信号的机会，尤其是在大统计中。我们概述了模型参数空间的区域，该区域可以在一年内以及在运营的十年内到达该工厂，并根据调整碰撞光束的能量的科学时间表。
Future $c$-$τ$ factories are natural places to study extensions of the Standard Model of particle physics (SM) with new long-lived feebly interacting particles light enough to be produced in electron-positron collisions. We investigate prospects of these machines in exploring such extensions emphasizing the role of polarized beams in getting rid of the SM irreducible background for the missing energy signature. We illustrate this on example of $c$-$τ$ project in Novosibirsk, where the electron beam is designed to be polarized to achieve much higher sensitivity to hadronic resonances and $τ$-leptons. We investigate models with hidden photons, with millicharged particles (fermions and scalars), with $Z'$ bosons and with axion-like particles. We find that the electron beam polarization of 80\% significantly improves the chances to observe the signal, especially with large statistics. We outline the regions of the model parameter space which can be reached at this factory in one year and in ten years of operation according with the scientific schedule of tuning the energy of colliding beams.
