Q-Gaussian 束流的 van-der-Meer 扫描光度校准
Luminosity calibration by means of van-der-Meer scan for Q-Gaussian beams
AI总结：
本文提出用 q-Gaussian 分布对 van-der-Meer 扫描进行建模，以更真实地描述束流粒子密度，从而改进对撞机光度校准。
摘要：
光度是表征带电粒子对撞机性能的关键物理量。精确测定光度是对撞机物理中的一项重要任务，其中一部分工作是对专用于光度测量的探测器进行正确校准。广泛使用的实验校准方法是 van-der-Meer 扫描，即在专门优化的束流条件下进行的束流分离扫描。本工作致力于利用对撞束中粒子的 q-Gaussian 分布来对这一扫描过程进行建模。由于 q-Gaussian 分布的性质，人们认为它比常规的基于 Gaussian 的模型更能描述接近真实的粒子密度。在本工作中，q-Gaussian 模型被应用于 van-der-Meer 扫描建模，并展示了该模型在光度校准任务中的优势。
英文摘要：
Luminosity is the key quantity characterizing the performance of charged particle colliders. Precise luminosity determination is an important task in collider physics. Part of this task is the proper calibration of detectors dedicated for luminosity measurements. The wide-used experi-mental method of calibration is the van-der-Meer scan, which is the beam separation scan performed at specifically optimized beam conditions. This work is devoted to modeling this scan with the q-Gaussian distribution of particles in colliding beams. Because of its properties, the Q-Gaussian distribution is believed to describe the density closer to reality than regular Gaussian-based models. In this work, the q-Gaussian model is applied for van-der-Meer scan modeling, and the benefits of this model for luminosity calibration task are demonstrated.
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