nucl-ex 篇论文 | Gist.Science

核外物理（Nucl-Ex）专注于探索原子核在极端条件下的行为，从高能粒子碰撞到恒星内部的核反应，这一领域帮助我们理解物质的基本构成与宇宙的演化历程。Gist.Science 致力于让前沿科学更触手可及，因此我们直接从 arXiv 收录该领域的最新预印本。

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A Precise Determination of $\alpha_s$ from the Heavy Jet Mass Distribution

本文通过对 $e^+e^-$ 重喷注质量数据的全局拟合，结合固定阶计算、多重重求和阶次以及基于第一性原理的幂次修正等最先进理论预言，精确测定了强耦合常数 $\alpha_s(m_Z) = 0.1148^{+ 0.0015}_{-0.0022}$ ，从而证明了重求和在获得稳健结果中的关键作用，并揭示了在三喷注区域存在负幂次修正的证据。

Miguel A. Benitez, Arindam Bhattacharya, Andre H. Hoang, Vicent Mateu, Matthew D. Schwartz, Iain W. Stewart, Xiaoyuan Zhang2026-05-05⚛️ nucl-ex

$\mathbf{{\textbf{K}}^{0}_{\textbf{S}}}-\mathbf{{\textbf{K}}^{0}_{\textbf{S}}}$ femtoscopy in Pb$-$Pb collisions at $\mathbf{\sqrt{\textit{s}_{\rm NN}} = 5.02}$ TeV at the LHC

本文利用 ALICE 数据，对 Pb$-$Pb 碰撞中 $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV 下的 ${\rm K}^{0}_{\rm S}-{\rm K}^{0}_{\rm S}$ 关联进行了一维飞米尺度分析，揭示了与集体膨胀一致的源特性，并提供了与先前测量及流体动力学模型预测相兼容的高能基准。

ALICE Collaboration2026-05-05⚛️ nucl-ex

Measurement of isolated-prompt photon$-$hadron correlations in Pb$-$Pb collisions at $\mathbf{\sqrt{\textit{s}_{\rm NN}} = 5.02}$ TeV

ALICE 合作组报告了在 $\sqrt{s_{\rm NN}} = 5.02$ TeV 的铅 - 铅碰撞中首次测量孤立瞬发光子 - 强子方位角关联，测量范围低至光子横动量 18 GeV/c，并观测到中心碰撞中伴随强子产额的强烈抑制，该结果与理论模型及其他实验的结果进行了比较。

ALICE Collaboration2026-05-05⚛️ nucl-ex

New Procedure for the Evaluation of Fission Product Yields: Application to the Spontaneous Fission of $^{252}$ Cf

本文提出了一种针对 $^{252}$ Cf 自发裂变产生的独立及累积裂变产物产额的新评估程序，该方法利用贝叶斯卡尔曼滤波器将实验数据与 $\texttt{BeoH}$ 中的 Hauser-Feshbach 裂变碎片衰变模型相结合，以生成瞬发及缓发中子和 $\gamma$ 射线多重性的平均值、完整相关性以及自洽预测。

A. E. Lovell, T. Kawano, P. Talou2026-05-05⚛️ nucl-ex

Evidence for Quark Confinement in the Proton

本文通过利用现有数据定义并测量夸克间的作用力，且无需量子色动力学提供先前的数学证明，展示了该力在广泛的位置范围内具有吸引力且恒定不变，从而为质子中的夸克禁闭提供了直接的实验证据。

Xiangdong Ji, Gerald A. Miller, Chen Yang2026-05-04⚛️ nucl-ex

Twist-2 relations for the twist-3 tensor-polarized distribution function $f_{LT}$ of a spin-1 hadron by the operator-product-expansion method

本文采用局域算符乘积展开方法，推导出自旋 1 强子（特别是氘核）的 twist-3 张量极化分布函数 $f_{LT}$ 的 twist-2 关系，具体包括一个类似 Wandzura-Wilczek 的关系和一个类似 Burkhardt-Cottingham 的求和规则，从而为杰斐逊实验室即将开展的电子 - 氘核深度非弹性散射实验提供可靠的理论基础。

S. Kumano, Kenshi Kuroki2026-05-04⚛️ nucl-ex

Measurement of the azimuthal anisotropy of charged particles in $\sqrt{s_{\mathrm{NN}}}=5.36$ TeV $^{16}$ O $+^{16}$ O and $^{20}$ Ne $+^{20}$ Ne collisions with the ATLAS detector

本文利用 ATLAS 探测器，首次测量了 $\sqrt{s_{\mathrm{NN}}}=5.36$ TeV 的 $^{16}$ O $+^{16}$ O 和 $^{20}$ Ne $+^{20}$ Ne 碰撞中带电粒子方位角各向异性系数（ $v_2$ – $v_4$ ），揭示了 $v_2 > v_3 > v_4$ 的清晰层级结构，并发现中心氖碰撞中椭圆流增强，从而为轻离子系统中的核形变和流体动力学响应提供了新的约束。

ATLAS Collaboration2026-05-01⚛️ nucl-ex

nucl-ex

A Precise Determination of $\alpha_s$ from the Heavy Jet Mass Distribution

$\mathbf{{\textbf{K}}^{0}_{\textbf{S}}}-\mathbf{{\textbf{K}}^{0}_{\textbf{S}}}$ femtoscopy in Pb$-$Pb collisions at $\mathbf{\sqrt{\textit{s}_{\rm NN}} = 5.02}$ TeV at the LHC

Measurement of isolated-prompt photon$-$hadron correlations in Pb$-$Pb collisions at $\mathbf{\sqrt{\textit{s}_{\rm NN}} = 5.02}$ TeV

New Procedure for the Evaluation of Fission Product Yields: Application to the Spontaneous Fission of $^{252}$ Cf

Evidence for Quark Confinement in the Proton

Twist-2 relations for the twist-3 tensor-polarized distribution function $f_{LT}$ of a spin-1 hadron by the operator-product-expansion method

Measurement of the azimuthal anisotropy of charged particles in $\sqrt{s_{\mathrm{NN}}}=5.36$ TeV $^{16}$ O $+^{16}$ O and $^{20}$ Ne $+^{20}$ Ne collisions with the ATLAS detector

Validating a Machine Learning Approach to Identify Quenched Jets in Heavy-Ion Collisions

Measurement of the top quark pair production cross section in PbPb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.36 TeV

Hindered Prompt-Neutron Evaporation in Surrogate Reactions for $^{239}$ Pu(n,f)

nucl-ex

A Precise Determination of αs\alpha_sαs​ from the Heavy Jet Mass Distribution

KS0−KS0\mathbf{{\textbf{K}}^{0}_{\textbf{S}}}-\mathbf{{\textbf{K}}^{0}_{\textbf{S}}}KS0​−KS0​ femtoscopy in Pb$-$Pb collisions at sNN=5.02\mathbf{\sqrt{\textit{s}_{\rm NN}} = 5.02}sNN​​=5.02 TeV at the LHC

Measurement of isolated-prompt photon$-$hadron correlations in Pb$-$Pb collisions at sNN=5.02\mathbf{\sqrt{\textit{s}_{\rm NN}} = 5.02}sNN​​=5.02 TeV

New Procedure for the Evaluation of Fission Product Yields: Application to the Spontaneous Fission of 252^{252}252Cf

Evidence for Quark Confinement in the Proton

Twist-2 relations for the twist-3 tensor-polarized distribution function fLTf_{LT}fLT​ of a spin-1 hadron by the operator-product-expansion method

Measurement of the azimuthal anisotropy of charged particles in sNN=5.36\sqrt{s_{\mathrm{NN}}}=5.36sNN​​=5.36 TeV 16^{16}16O+16+^{16}+16O and 20^{20}20Ne+20+^{20}+20Ne collisions with the ATLAS detector

Validating a Machine Learning Approach to Identify Quenched Jets in Heavy-Ion Collisions

Measurement of the top quark pair production cross section in PbPb collisions at sNN\sqrt{s_\mathrm{NN}}sNN​​ = 5.36 TeV

Hindered Prompt-Neutron Evaporation in Surrogate Reactions for 239^{239}239Pu(n,f)

A Precise Determination of $\alpha_s$ from the Heavy Jet Mass Distribution

$\mathbf{{\textbf{K}}^{0}_{\textbf{S}}}-\mathbf{{\textbf{K}}^{0}_{\textbf{S}}}$ femtoscopy in Pb$-$Pb collisions at $\mathbf{\sqrt{\textit{s}_{\rm NN}} = 5.02}$ TeV at the LHC

Measurement of isolated-prompt photon$-$hadron correlations in Pb$-$Pb collisions at $\mathbf{\sqrt{\textit{s}_{\rm NN}} = 5.02}$ TeV

New Procedure for the Evaluation of Fission Product Yields: Application to the Spontaneous Fission of $^{252}$ Cf

Twist-2 relations for the twist-3 tensor-polarized distribution function $f_{LT}$ of a spin-1 hadron by the operator-product-expansion method

Measurement of the azimuthal anisotropy of charged particles in $\sqrt{s_{\mathrm{NN}}}=5.36$ TeV $^{16}$ O $+^{16}$ O and $^{20}$ Ne $+^{20}$ Ne collisions with the ATLAS detector

Measurement of the top quark pair production cross section in PbPb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.36 TeV

Hindered Prompt-Neutron Evaporation in Surrogate Reactions for $^{239}$ Pu(n,f)