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22–26 Sep 2025
Asia/Shanghai timezone

Precision Predictions for Three-Dimensional Nucleon Tomography

Not scheduled
3h 30m
Oral Three-dimensional structure of the nucleon: transverse momentum dependent parton distributions Parallel

Speaker

Shen Fang (Fudan University)

Description

We present an analysis of lepton-jet azimuthal decorrelation in deep-inelastic scattering (DIS) at next-to-next-to-next-to-leading logarithmic (N$^{3}$LL) accuracy, combined with fixed-order corrections at $\mathcal{O}(\alpha_s^2)$. In this study, jets are defined in the lab frame using the anti-$k_T$ clustering algorithm and the winner-take-all recombination scheme. The N$^{3}$LL resummation results are derived from the transverse-momentum dependent factorization formula within the soft-collinear effective theory, while the $\mathcal{O}(\alpha_s^2)$ fixed-order matching distribution is calculated using the NLOJET++ event generator. The azimuthal decorrelation between the jet and electron serves as a critical probe of the three-dimensional structure of the nucleon. Our numerical predictions provide a robust framework for precision studies of QCD and the nucleon's internal structure through jet observables in DIS. These results are particularly significant for analyses involving jets in HERA data and the forthcoming electron-ion collider experiments.

Primary authors

Shen Fang (Fudan University) Dingyu Shao (Fudan University) Wanchen Li (Fudan University) John Terry

Co-authors

伟尧 (Weiyao) 柯 (Ke) (华中师范大学) Haitao Li (Shandong University) Zhongbo Kang (UCLA) Meisen Gao

Presentation materials

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