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[论文解读] STCF Conceptual Design Report: Volume 1 -- Physics & Detector

M. Achasov, Xuan Ai|arXiv (Cornell University)|Mar 28, 2023
Particle physics theoretical and experimental studies参考文献 397被引用 10
一句话总结

这篇论文介绍了 STCF Conceptual Design Report Volume 1，聚焦于 physics goals and detector concepts for the Super Tau-Charm Facility (STCF)。

ABSTRACT

The Super $τ$-Charm facility (STCF) is an electron-positron collider proposed by the Chinese particle physics community. It is designed to operate in a center-of-mass energy range from 2 to 7 GeV with a peak luminosity of $0.5 imes 10^{35}{ m cm}^{-2}{ m s}^{-1}$ or higher. The STCF will produce a data sample about a factor of 100 larger than that by the present $τ$-Charm factory -- the BEPCII, providing a unique platform for exploring the asymmetry of matter-antimatter (charge-parity violation), in-depth studies of the internal structure of hadrons and the nature of non-perturbative strong interactions, as well as searching for exotic hadrons and physics beyond the Standard Model. The STCF project in China is under development with an extensive R\&D program. This document presents the physics opportunities at the STCF, describes conceptual designs of the STCF detector system, and discusses future plans for detector R\&D and physics case studies.

研究动机与目标

  • 描述 STCF 概念设计用于物理程序和探测器系统。
  • 概述 STCF 的探测器需求和性能目标。
  • 为 Volume 1 提供一个涵盖物理覆盖范围和探测器概念的框架与路线图。

提出的方法

  • 呈现 STCF 物理程序的总体设计哲学。
  • 概述探测器子系统及其在实现物理目标中的预期作用。
  • 讨论探测器设计的集成、可行性和分阶段开发考虑。
Figure 2.2 : The mass spectrum of charmonia and $XYZ$ states in comparison with the predictions from the Godfrey–Isgur quark model [ 92 ] .
Figure 2.2 : The mass spectrum of charmonia and $XYZ$ states in comparison with the predictions from the Godfrey–Isgur quark model [ 92 ] .

实验结果

研究问题

  • RQ1哪些物理目标与机会推动 STCF 的设计？
  • RQ2实现 STCF 物理目标需要哪些探测器能力？
  • RQ3探测器应如何结构化并分阶段以达到性能目标？

主要发现

  • 在所提供的文本节选中未给出明确的数值结果或发现。
  • 该节选关注 Volume 1 Physics & Detector 设计的存在性和范围，而非实验结果。
Figure 2.3 : Cross sections for $e^{+}e^{-}\to J/\psi\eta_{c}$ (left) and $e^{+}e^{-}\to J/\psi c\bar{c}$ (right) as calculated using NRQCD with the charm quark mass fixed at 1.5 GeV. The solid and dashed curves represent the results from the next-to-leading-order and leading-order calculations, res
Figure 2.3 : Cross sections for $e^{+}e^{-}\to J/\psi\eta_{c}$ (left) and $e^{+}e^{-}\to J/\psi c\bar{c}$ (right) as calculated using NRQCD with the charm quark mass fixed at 1.5 GeV. The solid and dashed curves represent the results from the next-to-leading-order and leading-order calculations, res

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