Precision DIS thrust predictions for HERA and EIC

Ee, June-Haak; Kang, Daekyoung; Lee, Christopher; Stewart, Iain W.

doi:10.1007/JHEP07(2025)240

Precision DIS thrust predictions for HERA and EIC

Journal Article · Thu Jul 24 00:00:00 EDT 2025 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/JHEP07(2025)240· OSTI ID:2575580

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Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Fudan Univ., Shanghai (China); Korea Univ., Seoul, (Korea, Republic of)
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Univ. of Vienna (Austria)

We present predictions for the DIS 1-jettiness event shape $$τ^b_1$$, or DIS thrust, using the framework of Soft Collinear Effective Theory (SCET) for factorization, resummation of large logarithms, and rigorous treatment of nonperturbative power corrections, matched to fixed-order QCD away from the resummation region. Our predictions reach next-to-next-to-next-to-leading-logarithmic (N³LL) accuracy in resummed perturbation theory, matched to $$\mathcal{O}(α^2_s)$$ fixed-order QCD calculations obtained using the program NLOJet++. We include a rigorous treatment of hadronization corrections, which are universal across different event shapes and kinematic variables x and Q at leading power, and supplement them with a systematic scheme to remove $$\mathcal{O}$$(Λ_QCD) renormalon ambiguities in their definition. The framework of SCET allows us to connect smoothly the nonperturbative, resummation, and fixed-order regions, whose relative importance varies with x and Q, and to rigorously estimate theoretical uncertainties, across a broad range of x and Q covering existing experimental results from HERA as well as expected new measurements from the upcoming Electron- Ion-Collider (EIC). Our predictions will serve as an important benchmark for the EIC program, enabling the precise determination of the QCD strong coupling α_s and the universal nonperturbative first moment parameter Ω₁.

View Accepted Manuscript (DOE)

Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: 89233218CNA000001; SC0011090

OSTI ID:: 2575580

Report Number(s):: LA-UR--25-23190; 10.1007/JHEP07(2025)240; 1029-8479

Journal Information:: Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 7 Vol. 2025; ISSN 1029-8479

Publisher:: Springer NatureCopyright Statement

Country of Publication:: United States

Language:: English

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