第十二届中国 LHC 物理会议（CLHCP2026）

Session

Parallel 2: BSM 3

31 Oct 2026, 14:00

湖北省武汉市 (Wuhan, Hubei)

Conveners

Parallel 2: BSM 3

• 李强

782. Toward a Physically Informed Operator Analysis Framework at the Precision Frontier

Dr Jian-Nan Ding (Peking University)

31/10/2026, 14:00

The Standard Model Effective Field Theory (SMEFT) offers a model-independent framework to probe new physics. However, conventional "one-operator-at-a-time" analyses often overlook crucial correlations, while global fits face challenges in providing transparent physical interpretations of high-dimensional parameter spaces. We propose an optimized EFT strategy that identifies leading and...

783. Heavy resonance X-> bbgg at CMS(online)

Enrui Tian, Jin Wang (IHEP)

31/10/2026, 14:15

The latest results of Heavy resonance X-> bbgg at CMS will be presented.

腾讯会议：501-800-566

784. Leptogenesis Determined By Low Energy Parameters

肖雨奇

31/10/2026, 14:30

"We study thermal leptogenesis in three predictive type-I seesaw models in which the neutrino Dirac mass matrix is equal to the mass matrix of up-type quarks, or down-type quarks, or charged leptons. In this framework, the seesaw relation permits a full reconstruction of the heavy right-handed neutrino mass matrix from low-energy neutrino
parameters, which greatly reduces the parameter...

785. Searches for resonant and non-resonant HH production in bbtt at CMS(online)

Simona Pallutto

31/10/2026, 14:45

Search for X-> bbtautau at CMS, will be presented

Tencent/VooV Meeting：501-800-566

786. Scotogenic 模型在 LHC 与 HL-LHC 上的长寿命粒子信号：软位移轻子、时间辅助的消失径迹与延迟位移顶点

王任杰

31/10/2026, 15:00

"Scotogenic 模型在单圈水平上辐射产生中微子质量，并提供由 Z₂ 对称性保证稳定的暗物质候选粒子。该框架特有的小 Yukawa 耦合和小质量劈裂，使次轻的 Z₂ 奇态粒子自然成为长寿命粒子，其信号大多落在现有 LHC 搜寻的接受度之外。本报告介绍三种互补的搜寻策略，分别针对 scotogenic 质谱的不同区域。

(i) 在压缩质谱区（ΔM = m(η±) − m(N₁) ≈ 8–20 GeV），带电惰性标量衰变为单个软的位移轻子。专门设计的信号区要求轻子 pT > 5 GeV、|d₀| ∈ [5, 300] mm、b 喷注否决、横向丢失动量大于 200 GeV。在 Run 3 的 300 fb⁻¹ 数据下，估计的标准模型本底为 66 ± 24 个事例。九个基准点中有八个超过预期的 95% 置信水平排除阈值，即 cτ = 10–300 mm、m(η±) =...

787. Search for low-mass dijet resonance using a prescaled trigger method

Ayesha Zainab

31/10/2026, 15:15

Searches for low-mass dijet resonances at the LHC use hard initial-state radiation, either an isolated photon or a jet, to reach masses below the unprescaled trigger threshold. As the luminosity rises, more collisions are produced, so the unprescaled trigger has to raise its threshold to stay within the limited bandwidth and storage. Even with initial-state radiation, the low-mass region is...

788. Same-sign dimuon probe of charged lepton flavor violation at electron–photon colliders

Zhong Zhang

31/10/2026, 15:30

Observation of charged lepton flavor violation would constitute unambiguous evidence for physics beyond the Standard Model (SM). We identify a previously unexplored same-sign dimuon signature in electron--photon collisions, $\gamma e^- \to e^+\mu^-\mu^-$, mediated by an axionlike particle (ALP) with flavor-violating $e$--$\mu$ couplings. The absence of irreducible SM backgrounds and the...

912. Advanced jet tagging for boosted Higgs identification and Search for heavy resonances decaying to hadronic Higgs and photon at CMS

Mr Dawei Fu (Peking Uniersity), 付大为

31/10/2026, 15:45

Identifying Lorentz-boosted Higgs bosons through their hadronic decay products provides a powerful approach to studying Higgs interactions and searching for new physics at the LHC. This talk presents recent CMS developments in transformer-based jet tagging and their applications to Higgs physics. The Particle Transformer exploits particle-level information and correlations to identify complex,...