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。

Constraints on the inflationary vacuum and reheating era from NANOGrav

利用 NANOGrav 15 年数据，本文对暴胀参数和再加热时期进行了约束，发现倾向于蓝倾斜的张量谱和类辐射再加热，同时表明观测结果支持特定的非 Bunch-Davies α 真空，并暗示对该真空的频率依赖性修正或许能够解决蓝倾斜问题。

Debtosh Chowdhury, Rounak Nath, Sudipta Show2026-05-08🔭 astro-ph

Kaon Portal to Freeze-in Dark Matter

本文提出了一种低再加热宇宙学场景，其中轻暗物质通过由味改变算符介导的K介子衰变和散射产生，从而在暗物质遗迹丰度与NA62和KOTO等实验中的稀有K介子衰变搜寻之间建立了可检验的联系。

Motoi Endo, Takumu Yamanaka2026-05-08⚛️ hep-ex

The strange and flavor-singlet axial form factors of the nucleon from lattice QCD

本文利用具有 $O(a)$ 改进的Wilson费米子的 $N_f = 2+1$ CLS规范系综，对核子的味单态和奇异轴矢形状因子进行了全面的格点QCD计算，其中包含了针对手征、连续和无限体积极限外推的完整误差预算，并特别关注了处理非连通贡献的问题。

Alessandro Barone, Dalibor Djukanovic, Georg von Hippel, Harvey B. Meyer, Konstantin Ottnad, Hartmut Wittig2026-05-08⚛️ hep-lat

Sensitivity Projections for Low-Mass Dark Matter Annihilation with the IceCube Upgrade

本文提出的灵敏度预测表明，IceCube 升级将显著提升对来自太阳和银河系中心的低质量暗物质湮灭（3–500 GeV）的探测能力，并有望在三年数据采集期内对该类模型实现领先的约束。

R. Abbasi, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, J. M. Alameddine, S. Ali, N. M. Amin, K. Andeen, C. Argüelles, Y. Ashida, S. Athanasiadou, S. N. Axani, R. Babu, X. Bai, A. Balagopal V., S (…)2026-05-08⚛️ hep-ex

Search for $K_{\mathrm{S(L)}}^{0} \rightarrow \pi^{+}\pi^{-}\mu^{+}\mu^{-}$ decays at LHCb

利用 LHCb 实验的 13 TeV 质子 - 质子碰撞数据，本研究首次报告了对 $K_{\mathrm{S(L)}}^{0} \rightarrow \pi^{+}\pi^{-}\mu^{+}\mu^{-}$ 衰变的搜索，未发现任何信号证据，并在 90% 置信水平上首次确立了其分支比的上限。

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 (…)2026-05-07⚛️ hep-ex

Scalar molecules $\eta _{b}B_{c}^{-}$ and $\eta _{c}B_{c}^{+}$ with asymmetric quark contents

利用 QCD 求和规则方法，本文研究了假想的标量分子态 $\mathcal{M}_{b}$ （ $bb\overline{b}\overline{c}$ ）和 $\mathcal{M}_{c}$ （ $cc\overline{c}\overline{b}$ ）的质量、衰变宽度及主要衰变道，预测它们分别为质量约为 15.7 GeV 和 9.7 GeV 的强相互作用不稳定粒子，以指导未来的实验搜寻。

S. S. Agaev, K. Azizi, H. Sundu2026-05-07⚛️ hep-lat

Search for signatures of electroweakinos with photons, jets, and large missing transverse momentum in $\sqrt{s}=13$ TeV pp collisions with the ATLAS detector

利用 ATLAS 探测器收集的 140 fb $^{-1}$ 13 TeV 质子 - 质子对撞数据，本研究在包含光子、喷注和缺失横动量的末态中搜寻电弱微子信号，未发现超出标准模型预言的显著过量，并将对 gaugino 质量的排除上限设定至 1.2 TeV。

ATLAS Collaboration2026-05-07⚛️ hep-ex

hep-ex

Constraints on the inflationary vacuum and reheating era from NANOGrav

Kaon Portal to Freeze-in Dark Matter

The strange and flavor-singlet axial form factors of the nucleon from lattice QCD

Sensitivity Projections for Low-Mass Dark Matter Annihilation with the IceCube Upgrade

Search for $K_{\mathrm{S(L)}}^{0} \rightarrow \pi^{+}\pi^{-}\mu^{+}\mu^{-}$ decays at LHCb

Scalar molecules $\eta _{b}B_{c}^{-}$ and $\eta _{c}B_{c}^{+}$ with asymmetric quark contents

Search for signatures of electroweakinos with photons, jets, and large missing transverse momentum in $\sqrt{s}=13$ TeV pp collisions with the ATLAS detector

Impact of Higgs-boson measurements on SMEFT fits

Composite top partners in exotic colour representations

Indications for New Higgs Bosons

hep-ex

Constraints on the inflationary vacuum and reheating era from NANOGrav

Kaon Portal to Freeze-in Dark Matter

The strange and flavor-singlet axial form factors of the nucleon from lattice QCD

Sensitivity Projections for Low-Mass Dark Matter Annihilation with the IceCube Upgrade

Search for KS(L)0→π+π−μ+μ−K_{\mathrm{S(L)}}^{0} \rightarrow \pi^{+}\pi^{-}\mu^{+}\mu^{-}KS(L)0​→π+π−μ+μ− decays at LHCb

Scalar molecules ηbBc−\eta _{b}B_{c}^{-}ηb​Bc−​ and ηcBc+\eta _{c}B_{c}^{+} ηc​Bc+​ with asymmetric quark contents

Search for signatures of electroweakinos with photons, jets, and large missing transverse momentum in s=13\sqrt{s}=13s​=13 TeV pp collisions with the ATLAS detector

Impact of Higgs-boson measurements on SMEFT fits

Composite top partners in exotic colour representations

Indications for New Higgs Bosons

Search for $K_{\mathrm{S(L)}}^{0} \rightarrow \pi^{+}\pi^{-}\mu^{+}\mu^{-}$ decays at LHCb

Scalar molecules $\eta _{b}B_{c}^{-}$ and $\eta _{c}B_{c}^{+}$ with asymmetric quark contents

Search for signatures of electroweakinos with photons, jets, and large missing transverse momentum in $\sqrt{s}=13$ TeV pp collisions with the ATLAS detector