Workshop for Two-Photon Physics and New Detection Technology
Two-photon collisions constitute a prominent process in electron-positron colliders, producing final states with positive charge parity such as $\pi^0$ and $\chi_c(3915)$. These collisions play a critical role in discovering exotic hadronic states. While characterized by a small cross section, the increasing luminosity of modern colliders enables novel approaches to explore physics beyond the Standard Model – including glueball searches, charmonium-like state studies, and future Higgs boson production at facilities like CEPC and FCC-ee.
The Belle II experiment, operating at a center-of-mass energy of $\sqrt{s} \approx 10.6$ GeV, has achieved sustained data-taking with instantaneous luminosity exceeding $5 \times 10^{34}$ cm$^{-2}$s$^{-1}$, marking a transformative era for two-photon physics. However, the electron-positron pairs ($e^+e^-$) in two-photon final states frequently escape detection in the Belle II apparatus, resulting in low reconstruction efficiency and elevated background levels.
To address these limitations, this workshop will:
1. Examine two-photon collision physics in electron-positron colliders
2. Discuss innovative detector technologies for measuring escaping $e^+e^-$ pairs
3. Explore designs for complementary external detection systems
The workshop will be at the Yan Garden (燕园), Handan Campus, Fudan University, Shanghai.
Contact persons: Xiaolong Wang (xiaolong@fudan.edu.cn), Heting Li (liheting@fudan.edu.cn)
Zoom link:
May 16: https://zoom.us/j/92099801228?pwd=jjVDd37Fwv2xbkRb7RsMzze1jbXqTv.1
May 17: https://zoom.us/j/93077196821?pwd=RYqgJwQ2XR6L1afAedBau8MGcuhtMQ.1
Hotel:
M One Hotel美壹酒店
Add：No.6 Weide Road, Yangpu District,Shanghai
地址：上海市杨浦区伟德路6号
Zhengda Hotel正大宾馆（卿云宾馆）
Add：Southeast Corner of Fudan University Campus, No.220 Handan Road, Yangpu District,Shanghai
地址：上海市杨浦区邯郸路220号复旦大学校内东南角
Changzheng YUAN
Cheng Zhang
Christoph Schwanda
Chunhua Li
Feng-Kun Guo
Jyotirmoi Borah
Longke 龙科 Li 李
Lu Cao
Mingkuan Yuan
Ping WANG
Roberto Franceschini
Sandilya Saurabh
Tao Luo
Wanyi Zhuang
Wenbiao Yan
XiaoLong Wang
Xing Wang
xinhao zhao
Xinyue Hu
Youwen Xue
Yuping GUO
Zhanguo ZONG
Zheng Wang
zhiguo he
世卿 谢
世明 邹
世明 邹
启东/Qidong 周/Zhou
小博 金
开瑞 黄
旺 张
汇鑫/Hui-Xin 于/Yu
雅瑾/Yajin 周/Zhou
