发表机构
Department of Physics, University of Jyv\"askyl\"a, P.O. Box 35, 40014 University of Jyv\"askyl\"a, Finland; Helsinki Institute of Physics, P.O. Box 64, 00014 University of Helsinki, Finland（; ）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文从HERA数据约束次领头阶BK方程初始条件，并利用SIDIS中强子产生作为微分观测量探测胶子饱和，发现小x_Bj区域存在显著核抑制。
AI 中文摘要
我们从HERA质子结构函数数据出发，在次领头阶精度下推断Balitsky-Kovchegov（BK）演化方程的初始条件。我们同时描述总截面和粲产生测量结果。随后，我们表明深度非弹性散射中的包含强子产生可以为BK方程的非微扰初始条件提供互补约束。作为一种更具微分性的观测量，它可作为胶子饱和现象的灵敏探针。我们通过在偶极子图像中领头阶计算光子-核散射中强子产生的核修正因子来演示这一点。我们发现，在小$x_\mathrm{Bj}$区域，饱和效应导致显著的核抑制。
英文摘要
We infer the initial condition for the Balitsky-Kovchegov (BK) evolution equation at next-to-leading order accuracy from HERA proton structure function data. A simultaneous description of both the total cross section and charm production measurements is obtained. We then show that inclusive hadron production in deep inelastic scattering can provide complementary constraints on the non-perturbative initial condition of the BK equation. As a more differential observable, it serves as a sensitive probe of gluon saturation phenomena. We demonstrate this by calculating predictions for the nuclear modification factor in hadron production in photon-nucleus scattering at leading order in the dipole picture. We find that saturation effects lead to significant nuclear suppression at small $x_\mathrm{Bj}$.
CommentsTo appear in the proceedings of the XXXIII International Workshop on Deep Inelastic Scattering and Related Subjects (DIS2026), 4-8 May 2026, Bologna, Italy
