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。

Observation of Galactic center in the sub-MeV gamma-ray band with electron-tracking Compton camera

研究人员利用电子追踪康普顿相机在澳大利亚上空进行为期一天的飞行观测，以7.9σ的显著性首次直接探测到150–600 keV能段的银河系中心伽马射线辐射，证明了该仪器的高灵敏度并验证了其在未来高精度兆电子伏特伽马射线巡天中的潜力。

Tomonori Ikeda, Toru Tanimori, Atsushi Takada, Taito Takemura, Kei Yoshikawa, Yuta Nakamura, Ken Onozaka, Mitsuru Abe, Yoshitaka Mizumura2026-05-12⚛️ hep-ex

Searches for $B^0\to K^+\pi^-\tau^+\tau^-$ and $B_s^0\to K^+K^-\tau^+\tau^-$ decays

利用 5.4 fb $^{-1}$ 的 LHCb 对撞数据，首次对 $B^0\to K^+\pi^-\tau^+\tau^-$ 和 $B_s^0\to K^+K^-\tau^+\tau^-$ 衰变进行了搜索，未观测到信号，并确立了其分支比的新上限，其中包括将 $B^0\to K^*(892)^0\tau^+\tau^-$ 的先前最佳上限提高了十倍。

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta, F. Abudinén, T. Ackernley, A. A. Adefisoye, B. Adeva, M. Adinolfi, P. Adlarson, C. Agapopoulou, C. A. Aidala, Z. Ajaltouni, S. A (…)2026-05-12⚛️ hep-ex

Search for light pseudoscalar bosons, pair-produced in Higgs boson decays in the four-electron final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV

本研究利用 CMS 探测器收集的 138 fb $^{-1}$ 13 TeV 质子 - 质子对撞数据，首次开展了希格斯玻色子衰变为一对随后衰变为四个电子的轻赝标量玻色子的 LHC 搜索，未发现显著超出，并为 10 至 100 MeV 质量范围内的赝标量玻色子设定了低至 $10^{-5}$ 的分支比严格上限。

CMS Collaboration2026-05-12⚛️ hep-ex

Complete one-loop QED corrections to $D_s^+$ leptonic decays and impact on the CKM unitarity test

本文首次完整推导了 $D_s^+$ 轻子衰变的一圈电弱及QED修正，证明纳入这些辐射效应可解决第二列CKM幺正性破坏的报道，并强调需要包含QED修正的改进格点模拟以进一步验证标准模型。

Teppei Kitahara, Jun Miyamoto, Kota Sasaki2026-05-12⚛️ hep-ex

Measurement of the branching fractions and longitudinal polarisations of $B^0_{(s)} \to K^{0} \kern 0.18em \overline{\kern -0.18em K}{}^{0}$ decays

本研究利用 2011 至 2018 年 LHCb 实验采集的 9 fb⁻¹ 对撞数据，测量了 $B^0$ 和 $B^0_s$ 衰变至 $K^{*0} \overline{K}{}^{*0}$ 的分支比及纵向极化分数，证实了关于 $B \to VV$ 衰变中纵向极化的实验结果与理论预测之间存在 4.4 $\sigma$ 的张力。

Amplitude Analysis and Branching Fraction Measurement of $D^+ \to \pi^+\pi^0\pi^0$

利用 BESIII 探测器采集的 20.3 fb $^{-1}$ $e^+e^-$ 对撞数据，本文首次对 $D^+ \to \pi^+\pi^0\pi^0$ 衰变进行了振幅分析，确认 $D^+ \to \rho(770)^+\pi^0$ 成分占主导地位，并报告了总分支比、中间拟合分数及 CP 不对称性的精确测量结果。

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. (…)2026-05-12⚛️ hep-ex

Characterisation of the Thermoflow due to the Dry Nitrogen Flushing Scheme in the ATLAS Inner Tracker using Computational Fluid Dynamics

本文利用计算流体动力学表征并优化了ATLAS内径迹探测器高亮度升级的干氮吹扫方案，确保在各种运行及故障工况下将露点维持在-60°C以下，从而防止冷凝并保护探测器电子设备。

Muaaz Bhamjee, Matthew Connell, Simon Connell, Emmanuel Igumbor, Lerothodi Leeuw, Pedro Mafa, Marco Oriunno, Marcel Vreeswijk2026-05-12⚛️ hep-ex

hep-ex

Observation of Galactic center in the sub-MeV gamma-ray band with electron-tracking Compton camera

Searches for $B^0\to K^+\pi^-\tau^+\tau^-$ and $B_s^0\to K^+K^-\tau^+\tau^-$ decays

Search for light pseudoscalar bosons, pair-produced in Higgs boson decays in the four-electron final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV

Complete one-loop QED corrections to $D_s^+$ leptonic decays and impact on the CKM unitarity test

Measurement of the branching fractions and longitudinal polarisations of $B^0_{(s)} \to K^{0} \kern 0.18em \overline{\kern -0.18em K}{}^{0}$ decays

Amplitude Analysis and Branching Fraction Measurement of $D^+ \to \pi^+\pi^0\pi^0$

Characterisation of the Thermoflow due to the Dry Nitrogen Flushing Scheme in the ATLAS Inner Tracker using Computational Fluid Dynamics

Lepton Flavor Violating Higgs decays at the Compact Linear Collider

A Modular Zero-Dead-Time Data Acquisition and Real-Time GPU Processing Platform for High Throughput Physics Experiments

A study of multicavity concept applied to hexagonal coaxial haloscopes

hep-ex

Observation of Galactic center in the sub-MeV gamma-ray band with electron-tracking Compton camera

Searches for B0→K+π−τ+τ−B^0\to K^+\pi^-\tau^+\tau^-B0→K+π−τ+τ− and Bs0→K+K−τ+τ−B_s^0\to K^+K^-\tau^+\tau^-Bs0​→K+K−τ+τ− decays

Search for light pseudoscalar bosons, pair-produced in Higgs boson decays in the four-electron final state in proton-proton collisions at s\sqrt{s}s​ = 13 TeV

Complete one-loop QED corrections to Ds+D_s^+Ds+​ leptonic decays and impact on the CKM unitarity test

Measurement of the branching fractions and longitudinal polarisations of B(s)0→K∗0K‾∗0B^0_{(s)} \to K^{*0} \kern 0.18em \overline{\kern -0.18em K}{}^{*0}B(s)0​→K∗0K∗0 decays

Amplitude Analysis and Branching Fraction Measurement of D+→π+π0π0D^+ \to \pi^+\pi^0\pi^0D+→π+π0π0

Characterisation of the Thermoflow due to the Dry Nitrogen Flushing Scheme in the ATLAS Inner Tracker using Computational Fluid Dynamics

Lepton Flavor Violating Higgs decays at the Compact Linear Collider

A Modular Zero-Dead-Time Data Acquisition and Real-Time GPU Processing Platform for High Throughput Physics Experiments

A study of multicavity concept applied to hexagonal coaxial haloscopes

Searches for $B^0\to K^+\pi^-\tau^+\tau^-$ and $B_s^0\to K^+K^-\tau^+\tau^-$ decays

Search for light pseudoscalar bosons, pair-produced in Higgs boson decays in the four-electron final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV

Complete one-loop QED corrections to $D_s^+$ leptonic decays and impact on the CKM unitarity test

Measurement of the branching fractions and longitudinal polarisations of $B^0_{(s)} \to K^{0} \kern 0.18em \overline{\kern -0.18em K}{}^{0}$ decays

Amplitude Analysis and Branching Fraction Measurement of $D^+ \to \pi^+\pi^0\pi^0$