IAS Program on High Energy Physics (HEP 2023)
Mini-workshops in Theory & Experiment and Detector: February 12-13, 2023
Conference: February 14-16, 2023
Mini-workshops:
Experiment / Detector — Enhance the Discovery Power for Future e-e+ Higgs Factory
The electron positron Higgs factory is widely regarded as the highest priority facility for future collider-based exploration of particle physics. Several electron positron Higgs factories have been proposed, with intensive efforts on quantifying its discovery power, innovative facility design, and critical technology R&D. These electron positron Higgs factories can produce large statistic of Higgs bosons, Z and W bosons, and top quarks. Therefore, they can perform not only precise measurement of the Higgs boson, but also intensive exploration via precise measurements of EW, QCD, Flavor physics, and direct searches for New Physics signals. Meanwhile, the community is proposing new observables and strategies for detecting Beyond Standard Model signals. These physics measurements, once combined, could significantly enhance the discovery power of the future electron positron Higgs factories.
The rich physics program and huge statistic of clean data of future electron positron Higgs factories make stringent physics requirement to its detector system. It’s highly non-trivial to design an adequate detector system to the future electron positron Higgs factory, and to optimize – or balance its performance under different constrains. In this context, innovative detector design and advanced detector technologies are critical to enhance the discovery power of future electron positron Higgs factories, since they could significantly improve the separation between signal and background, and the precision to measure critical observables such as the energy and momentum of final state particles.
This mini-workshop aims to exchange new ideas of physics and detector studies, discuss the recent progress and plan future activities towards more efficient physics studies and detector R&Ds for future electron positron Higgs factories.
Theory — High-Energy Physics at Low-Energy Scale Collisions
Physics at high-energy scales could be manifested as rare processes and tiny effects at low-energy scales. The representative physical cases include, e.g., rare decays of hadrons, charged lepton flavor violation, axion-like particles, light dark matter, neutrino physics, long-lived particles, etc. Their measurements thus may provide a deep insight into the underlying physics to resolve fundamental problems in particle physics and cosmology. Motivated by this consideration, various ultra-sensitive experiments in high-intensity environment have been conducted or proposed so far, including the planned runs of future lepton colliders at low-energy scale. To take full advantages of these opportunities, however, efforts must be taken to develop finer instrumentation, more advanced data-analysis strategies, and more diverse observable designs. These efforts will form a complementarity to the direct searches of fundamental physics in high-energy scale particle collisions. In this mini-workshop, we would bring together the colleagues working on these areas to report recent research progress, exchange new ideas, stimulate relevant discussions and create potential collaborations.
Conference:
After the discovery of the Higgs boson, the main objectives of high-energy physics are the precise measurement of Higgs properties and searches for new physics. These objectives strongly motivate the construction of next-generation experimental facilities such as e+e- Higgs factory and 100TeV pp collider or muon collider.
The Higgs boson plays a crucial role in explaining spontaneous electroweak symmetry breaking and the mass generation of the known fundamental particles. It is thus important to measure precisely the Higgs-gauge couplings, the Higgs-Yukawa couplings and the Higgs self-couplings. A future Higgs factory would achieve such a goal significantly better than the LHC. Such precise measurements also provide an indirect probe for new physics that alters the Higgs properties.
Addressing fundamental puzzles in nature such as hierarchy problem, dark matter, etc. results in expectation that new physics should emerge at the TeV scale or above. A higher energy machine like new pp collider or muon collider will be crucial for directly exploring new physics and the properties of any to-be-discovered particles at the LHC.
This High Energy Physics (HEP) program in Hong Kong started in 2015. The objective of this program is to bring theorists, experimentalists and accelerator physicists together, to stimulate discussions and exchange thoughts on the future collider programs. After being held virtually in 2020 and 2021 due to the COVID-19 pandemic, this program is on the way back to normal. In 2023, we will take a hybrid mode. However, we strongly encourage people to attend this program in person. About the talk arrangement, we will give a priority to in-person participants. As part of this HEP program, a three-day conference will be held during February 14 - 16, 2023. Before that, two two-day mini-workshops focusing on theory and experiment/detector respectively, will be organized on February 12-13. It is also hoped that some white papers for the particle physics community documenting the physics goals, options of future colliders, and the reach of the related experiments could be released.
Joint Organizers
- Center for Future High Energy Physics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing
- Joint Consortium of Fundamental Physics, Hong Kong
Group Photo

Organizers and conference / workshop participants gather for a group photo.
Previous HEP Programs
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Review of VTX/Silicon Technology 25mSpeaker: Zhijun LIANG (IHEP)
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FASER Experiment at HL-LHC 20mSpeakers: Ke LI (University of Washington), Shin-Chieh HSU (University of Washington)
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Coffee Break 20m
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Development of CEPC Drift Chamber Software 25mSpeaker: Weidong LI (IHEP)
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Mini-workshop: Theory: Day 2 - Session M (TH2)Convener: Xiaoping WANG (Beihang University)
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Long Lived Particles at FCC-ee [Zoom] 25mSpeaker: Suchita KULKARNI (University of Graz)
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Lunch Break (Self-arranged) 1h 20m
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Pixelated and Pad Readout TPC Technology R&D for the Future e+e- Collider 25mSpeaker: Huirong QI (IHEP)
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IDEA Drift Chamber [Zoom] 25mSpeaker: Brunella Brunella D’ANZI (INFN and Bari University)
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Hidden-charm Exotics and Their Productions [Zoom] 25mSpeaker: Feng-Kun GUO (Institute of Theoretical Physics)
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Coffee Break 20m
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Status & Progress of the IDEA Detector Concept 25mSpeaker: Roberto FERRARI (INFN Pavia)
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High Precision Calculation Towards Future ee Factory? [Zoom] 25mSpeaker: Zhao LI (IHEP)
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Measurements of the Partons Inside the Proton [Zoom] 25mSpeaker: Siqi YANG (University of Science and Technology of China)
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Going Beyond the Dimension 6 EFT in the High Energy/Luminosity Era 25mSpeaker: Rick S. GUPTA (Tata Institute of Fundamental Research)
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Probing Heavy Neutral Leptons at Future Experiments [Zoom] 25mSpeaker: Juraj KLARIC (Catholic University of Louvain)
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Machine Learning at Higgs Factory 25mSpeaker: Shengdu CHAI (Fudan University)
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Probing R-parity Violation in B-meson Decays to a Baryon and a Light Neutralino [Zoom] 25mSpeaker: Zeren Simon WANG (National Tsing Hua University)
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Conference: Plenary Sessions: Day 1 - Session 1: (Tu 1)Convener: Tao LIU (HKUST)
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Perspective Talk [Zoom] 45mSpeaker: Nima ARKANI-HAMED (Princeton University)
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New Physics Opportunities at ee Colliders 45mSpeaker: Liantao WANG (The University of Chicago)
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Coffee Break 30m
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Conference: Plenary Sessions: Day 1 - Session 2: (Tu2)Convener: Joao GUIMARAES DA COSTA (IHEP)
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CEPC Progress 45mSpeaker: Haijun YANG (Shanghai Jiao Tong University and Tsung-Dao Lee Institute)
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Program Lunch for Registered Participants only 1h 30m
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CEPC Collider Lattice Design 20mSpeaker: Yiwei WANG (IHEP)
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CEPC Linac Injector Design Status [Zoom] 20mSpeaker: Cai MENG (IHEP)
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CEPC MDI Issues in Accelerator 20mSpeaker: Sha BAI (IHEP)
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IR Design for High Lumi & Low Background [Zoom] 25mSpeaker: Michael Kenneth SULLIVAN (SLAC National Accelerator Laboratory)
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Update of CEPC Lumical Design 25mSpeaker: Suen HOU (Institute of Physics)
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Conference: Parallel Sessions (Theory): Day 1 - Session 1: (Tu3-TH01)Convener: Yongchao ZHANG (Southeast University)
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New Physics Opportunities in Triangle Singularity 20mSpeaker: Yu GAO (IHEP)
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Origin of Neutrino Masses and Seesaw Effective Field Theories 20mSpeaker: Shun ZHOU (IHEP)
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A complete tree-level dictionary between BSM models and SMEFT (d ≤ 7) operators 20mSpeaker: Xu-Xiang LI (Peking University)
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Macroscopic Dark Matter from Cosmic Phase Transitions 20mSpeaker: Sida LU (HKUST)
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Coffee Break 20m
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Conference: Parallel Sessions (Accelerator): Day 1 - Session 2: (Tu3-AP02)Convener: Jie GAO (IHEP)
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Electron Positron Collider Power Consumptions [Zoom] 20mSpeaker: Frank ZIMMERMANN (CERN)
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Vacuum System Development in HEPS 20mSpeaker: Yongsheng MA (IHEP)
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Magnets Development in HEPS 20mSpeaker: Wen KANG (IHEP)
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HEPS Power Source Development 20mSpeaker: Bin CHEN (IHEP)
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HEPS Injection/Extraction Hardware Development 20mSpeaker: Jinhui CHEN (IHEP)
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HEPS Injector Linac Developments 20mSpeaker: Jingru ZHANG (IHEP)
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Conference: Parallel Sessions (Experiment/Detector): Day 1 - Session 2: (Tu3-ED02)Convener: Xuai ZHUANG (IHEP)
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Higgs to Fermion Couplings @ LHC 25mSpeaker: Huaqiao ZHANG (IHEP)
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Investigating Higgs Self-interaction through Di-Higgs Plus Jet Production 25mSpeaker: Hao ZHANG (IHEP)
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Conference: Parallel Sessions (Theory): Day 1 - Session 2: (Tu3-TH02)Convener: Haipeng AN (Tsinghua University)
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Fermion Mass Hierarchies and Modulus Stabilisation in Modular-invariant Theories of Flavour [Zoom] 20mSpeaker: Serguey PETCOV (SISSA)
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Coupling a Cosmic String to a TQFT [Zoom] 20mSpeaker: Sung Woo HONG (KAIST)
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Conference: Plenary Sessions: Day 2 - Session 1: (W1)Convener: Jie GAO (IHEP)
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Coffee Break 30m
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Conference: Plenary Sessions: Day 2 - Session 2: (W2)Convener: Manqi RUAN (IHEP)
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Quantum Simulation for High Energy Physics 30mSpeaker: Ying-Ying LI (University of Science and Technology of China)
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Excesses at the LHC and Potential Implications for the HL-LHC and e+e- Colliders 30mSpeaker: Bruce MELLADO (University of the Witwatersrand and iThemba LABS)
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Self-arranged Lunch 1h 30m
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Conference: Parallel Sessions (Accelerator): Day 2 - Session 1: (W3-AP01)Convener: Yuhui LI (IHEP)
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Superconducting Technology for Accelerators Frontier > — High-Field Magnet, SRF, and Cryogenics/Cryogen [Zoom] 20mSpeaker: Akira YAMAMOTO (KEK)
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Klystrons and RF Power Sources 20mSpeaker: Zusheng ZHOU (IHEP)
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SC Quadrupoles Design and R&D Status for CEPC [Zoom] 20mSpeaker: Yingshun ZHU (IHEP)
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SppC High Field Magnets R&D and International Collaboration 20mSpeaker: Qingjin XU (IHEP)
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Conference: Parallel Sessions (Experiment/Detector): Day 2 - Session 1: (W3-ED01)Convener: Yaquan FANG (IHEP)
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Search for Dark Matter in the Events with Missing Transverse Momentum at Colliders 20mSpeaker: Jinfei WU (IHEP)
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Searching for Quirk Signal at the LHC 20mSpeaker: Junle PEI (IHEP)
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Conference: Parallel Sessions (Theory): Day 2 - Session 1: (W3-TH01)Convener: Yongchao ZHANG (Southeast University)
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New Physics at the Forward Physics Facility (FPF) [Zoom] 25mSpeaker: Kingman CHEUNG (National Tsing Hua University)
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GW from Early Phase Transition 25mSpeaker: Haipeng AN (Tsinghua University)
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Astro & Particle Physics Relevant 25mSpeaker: Yusheng WU (University of Science and Technology of China)
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Coffee Break 20m
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Conference: Parallel Sessions (Accelerator): Day 2 - Session 2: (W3-AP02)Convener: Angeles FAUS-GOLFE [Zoom] (IJClab)
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Beam-beam Study Status 20mSpeaker: Yuan ZHANG (IHEP)
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CEPC Collective Instability Study Status 20mSpeaker: Na WANG (IHEP)
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CEPC Polarization Study Status [Zoom] 20mSpeaker: Zhe DUAN (IHEP)
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CEPC Plasma Injector Study Status and Test Facility Plan 20mSpeaker: Dazhang LI (IHEP)
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Conference: Parallel Sessions (Experiment/Detector): Day 2 - Session 2: (W3-ED02)Convener: Yiming LI (IHEP)
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Preliminary Design of the CEPC det. Hall and Detector Installation Scheme 25mSpeaker: Junsong ZHANG (IHEP)
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CEPC Beam Energy/Polarization Measurement [Zoom] 25mSpeaker: Yongsheng HUANG (Zhongshan University)
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Conference: Parallel Sessions (Theory): Day 2 - Session 2: (W3-TH02)Convener: Hao ZHANG (IHEP)
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Tau Polarization Measurement at FCC-ee [Zoom] 25mSpeaker: Jean-Claude BRIENT (École polytechnique)
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Representation of Fermions in Pati-Salam Model [Zoom] 25mSpeaker: Desheng LI (Hunan Institute of Engineering)
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High-quality Axion in the Grand Unified Theories Beyond the SU(5) [Zoom] 25mSpeaker: Ning CHEN (Nankai University)
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Testing Neutrino Dipole Portal at Electron Colliders and at the LHC by Long-lived Particle Detectors [Zoom] 25mSpeaker: Yu ZHANG (Hefei University of Technology)
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Conference: Plenary Sessions: Day 3 - Session 1: (Th 1)Convener: Tao LIU (HKUST)
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New Approaches on DM Detection 45mSpeaker: Tien-Tien YU (University of Oregon)
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Coffee Break 30m
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Conference: Plenary Sessions: Day 3 - Session 2: (Th 2)Convener: Tao LIU (HKUST)
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Forum Discussion 1h 30mSpeakers: Tao HAN (University of Pittsburgh), Michael HOFER (CERN), Andrea LATINA (CERN), Yifang WANG (IHEP), Akira YAMAMOTO [Zoom] (KEK)
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