第十二届中国 LHC 物理会议（CLHCP2026）

Session

Parallel 2: BSM 1

30 Oct 2026, 14:00

湖北省武汉市 (Wuhan, Hubei)

Conveners

Parallel 2: BSM 1

• 岳崇兴

707. Testing CP-violation at Future Colliders

毛英男

30/10/2026, 14:00

In this talk, I will discuss several different scenarios about testing CP-violation at high energy colliders, based on some recent progresses and forthcoming projects from my group. We studied CP-violation effects both from pure bosonic sector and the Yukawa sector. For pure bosonic sector, we considered a heavy Higgs boson produced through VBF process and decaying through Zh(125) channel,...

708. A MeV-Scale Dark QCD Solution to the Axion Domain Wall Problem

康召丰

30/10/2026, 14:15

PQ solution to the strong CP problem probably encounters the axion domain wall problem. In this article, we propose a simple and testable solution, assuming that the U(1)PQU(1)PQ​ possesses mixed anomaly to a hidden SU(Nc)SU(Nc​) color. Then, the axion field receives a new cosine potential from the hidden instantons, which breaks the ZNDWZNDW​​ subgroup explicitly. The new potential lifts the...

721. Search for Soft Unclustered Energy Pattern with the multi-muon final state in the ATLAS experiment

Ligang Xia

30/10/2026, 14:30

Soft unclustered energy patterns (SUEPs) refer to high-multiplicity, isotropic distributions of low-momentum particles that could arise in strongly-coupled hidden sector theories. A search for SUEPs whose decay products contain muons in the final state is presented using 140 fb−1 of proton–proton collision data at √𝑠 = 13 TeV collected by the ATLAS detector at the Large Hadron Collider during...

709. Dihadron Fragmentation as a Spin Analyzer at Lepton Colliders

Bin Yan

30/10/2026, 14:45

Spin-dependent dihadron fragmentation provides a unique way to access the polarization and spin correlations of light quarks and gluons at lepton colliders. In this talk, I will discuss how dihadron fragmentation can serve as a spin analyzer and be used to study a range of phenomena, including Bell inequality violation, anomalous electromagnetic dipole interactions, light-quark Yukawa...

710. Search for heavy Majorana neutrinos in vector boson scattering with 𝝉-lepton final states with the ATLAS detector

Zhanghang Zhou

30/10/2026, 15:00

712. Search for dark matter produced in association with a pair of bottom quarks in proton-proton collisions at √s = 13 TeV

Praveen Chandra Tiwari

30/10/2026, 15:15

713. Quantum Tomography of Top Quarks as a Probe of Charge-Parity Violation

谢可平

30/10/2026, 15:30

LHC measurements now reconstruct all fifteen parameters of the $t\bar{t}$ two-qubit spin density matrix, which amounts to a full quantum tomography of the pair. We show that this data constrains CP violation in the top-Yukawa coupling. The coupling enters the density matrix at one loop and produces spin correlations that are odd under CP and do not affect the cross section. Using the first...

711. Probing Dark Shower Models at Colliders using Long-Lived Particle Searches

刘威