hep-ex 篇论文 | Gist.Science

肝外系统（Hep-Ex）研究聚焦于肝脏之外那些与肝脏功能紧密相连的复杂网络，涵盖从代谢调节到免疫反应的广泛领域。这里探讨的不仅是器官间的相互作用，更是理解全身健康如何受肝脏状态深远影响的关键窗口。

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以下是该分类下从 arXiv 精选的最新研究成果。

NuGraph2 with Context-Aware Inputs: Physics-Inspired Improvements in Semantic Segmentation

本文针对液氩时间投影室中 Michel 电子等稀有粒子的语义分割难题，提出通过融合探测器几何与轨迹连续性等物理上下文特征来增强 NuGraph2 架构，实验表明这种直接嵌入物理信息的输入增强策略比辅助解码器或能量正则化更有效，并指出未来引入显式粒子级推理的层级架构将更利于高级物理约束的应用。

Vitor F. Grizzi, Margaret Voetberg, V Hewes, Giuseppe Cerati, Hadi Meidani2026-04-17⚛️ hep-ex

Observation of a threshold enhancement in the $\pi^+\pi^-$ spectrum in $\psi(3686) \rightarrow \pi^{+}\pi^{-}J/\psi$ decays

基于 BESIII 探测器采集的约 2710 万个 $\psi(3686)$ 事例，该研究首次在 $\psi(3686) \rightarrow \pi^{+}\pi^{-}J/\psi$ 衰变中观测到 $\pi^+\pi^-$ 质量阈值处显著的共振结构（质量约 285.6 MeV/ $c^2$ ，宽度约 16.3 MeV），并发现 QCD 多极展开模型能成功解释该阈值增强及 0.3 GeV/ $c^2$ 附近的凹陷现象，而手征微扰理论则无法描述该阈值特征。

BESIII Collaboration, M. Ablikim, M. N. Achasov, P. Adlarson, X. C. Ai, R. Aliberti, A. Amoroso, Q. An, Y. Bai, O. Bakina, Y. Ban, H. -R. Bao, V. Batozskaya, K. Begzsuren, N. Berger, M. Berlowski, M. (…)2026-04-17⚛️ hep-ex

Measurements of top quark asymmetries

本文总结了 ATLAS 和 CMS 合作组关于利用大型强子对撞机（LHC）测量顶夸克不对称性以检验标准模型的最新实验结果。

Nils Faltermann2026-04-17⚛️ hep-ex

Search for heavy resonances decaying into four-lepton final states via light bosons in proton-proton collisions at $\sqrt{s}$ = 13 TeV

CMS 实验利用 13 TeV 质子 - 质子对撞数据，通过新颖技术增强了对轻玻色子衰变产生的准直双轻子对的探测灵敏度，在寻找质量大于 250 GeV 的四轻子共振态过程中未发现显著超出，并针对 0.4–15 GeV 的未探索双轻子质量区间设定了产生截面上限。

CMS Collaboration2026-04-17⚛️ hep-ex

hep-ex

NuGraph2 with Context-Aware Inputs: Physics-Inspired Improvements in Semantic Segmentation

Observation of a threshold enhancement in the $\pi^+\pi^-$ spectrum in $\psi(3686) \rightarrow \pi^{+}\pi^{-}J/\psi$ decays

Measurements of top quark asymmetries

Search for heavy resonances decaying into four-lepton final states via light bosons in proton-proton collisions at $\sqrt{s}$ = 13 TeV

Expected Sensitivity of the Light Dark Matter eXperiment to Long-Lived Dark Photons and Axion-Like Particles

Charmed baryon decays at BESIII

Dalitz decay of $K^*(892) \rightarrow K \ell^+\ell^-$ : A New Probe for Hadronic Structure and Dark Photon Searches

Multiboson and VBS measurements in ATLAS and CMS

Glauber-Lachs formula-based analysis of three-pion Bose-Einstein correlation data at 7 TeV from the LHCb Collaboration

Study of the $B^0 \to \Lambda_c^+ \bar{\Lambda}_c^- K_S^0$ decay

hep-ex

NuGraph2 with Context-Aware Inputs: Physics-Inspired Improvements in Semantic Segmentation

Observation of a threshold enhancement in the π+π−\pi^+\pi^-π+π− spectrum in ψ(3686)→π+π−J/ψ\psi(3686) \rightarrow \pi^{+}\pi^{-}J/\psiψ(3686)→π+π−J/ψ decays

Measurements of top quark asymmetries

Search for heavy resonances decaying into four-lepton final states via light bosons in proton-proton collisions at s\sqrt{s}s​ = 13 TeV

Expected Sensitivity of the Light Dark Matter eXperiment to Long-Lived Dark Photons and Axion-Like Particles

Charmed baryon decays at BESIII

Dalitz decay of K∗(892)→Kℓ+ℓ−K^*(892) \rightarrow K \ell^+\ell^-K∗(892)→Kℓ+ℓ−: A New Probe for Hadronic Structure and Dark Photon Searches

Multiboson and VBS measurements in ATLAS and CMS

Glauber-Lachs formula-based analysis of three-pion Bose-Einstein correlation data at 7 TeV from the LHCb Collaboration

Study of the B0→Λc+Λˉc−KS0B^0 \to \Lambda_c^+ \bar{\Lambda}_c^- K_S^0B0→Λc+​Λˉc−​KS0​ decay

Observation of a threshold enhancement in the $\pi^+\pi^-$ spectrum in $\psi(3686) \rightarrow \pi^{+}\pi^{-}J/\psi$ decays

Search for heavy resonances decaying into four-lepton final states via light bosons in proton-proton collisions at $\sqrt{s}$ = 13 TeV

Dalitz decay of $K^*(892) \rightarrow K \ell^+\ell^-$ : A New Probe for Hadronic Structure and Dark Photon Searches

Study of the $B^0 \to \Lambda_c^+ \bar{\Lambda}_c^- K_S^0$ decay