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Nuclear Theory·nucl-th

Monday·June 2, 2025

8 papers—5 primary·3 cross-listed

All8Primary5Cross-lists3
  1. 06

    [Submitted on 29 May 2025] (cross-list from hep-ph)

    Factorized QED and QCD Contribution to Deeply Inelastic Scattering

    Justin Cammarota🇺🇸 · Jian-Wei Qiu🇺🇸 · Kazuhiro Watanabe🇯🇵 · Jia-Yue Zhang🇺🇸

    We present the first calculation of next-to-leading order (NLO) factorized QED and QCD contributions to the short-distance hard coefficients of inclusive lepton-hadron deep inelastic scattering (DIS) in a joint QED and QCD factorization approach. Unlike the traditional radiative correction approach to handle the collision-induced QED contributions to DIS, QED radiation from all charged leptons and quarks are treated equally, and their collinear sensitivities are systematically factorized into corresponding universal lepton and parton distribution functions. We demonstrate that the NLO factorized QED contribution is completely infrared safe and calculable without the need of any parameters other than the standard factorization scale in the same way as the factorized QCD contribution. We discuss the potential impact of this joint factorization approach on the extraction of partonic information from lepton-hadron DIS.

    Comments:
    19 pages, 16 figures
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Experiment (hep-ex); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
    arXiv:
    2505.23487 [pdf]
    PRD(2025)·10 citations
  2. 07

    [Submitted on 29 May 2025] (cross-list from hep-ph)

    Electroexcitation of Nucleon Resonances and the Emergence of Hadron Mass

    Patrick Achenbach🇺🇸 · Daniel S. Carman🇺🇸 · Ralf W. Gothe🇺🇸 · Kyungseon Joo🇺🇸 · Victor I. Mokeev🇺🇸 · Craig D. Roberts🇨🇳

    Developing an understanding of phenomena driven by the emergence of hadron mass (EHM) is one of the most challenging problems in the Standard Model. This discussion focuses on the impact of results on nucleon resonance () electroexcitation amplitudes (or electrocouplings) obtained from experiments during the 6-GeV era in Hall~B at Jefferson Lab on understanding EHM. Analyzed using continuum Schwinger function methods (CSMs), these results have revealed new pathways for the elucidation of EHM. A good description of the , , and electrocouplings, achieved by CSM analyses that express a realistic dressed quark mass function, sheds light on the strong interaction dynamics that underlies EHM. Extensions to nucleon resonance studies for higher-mass states are outlined, as well as experimental results anticipated in the 12-GeV era at Jefferson Lab and those that would be enabled by a further increase of the beam energy to 22~GeV.

    Comments:
    37 pages, 17 figures, 4 tables
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
    arXiv:
    2505.23550 [pdf]
    Symmetry(2025)·23 citations
  3. 08

    [Submitted on 30 May 2025] (cross-list from hep-ph)

    Review on recent progress in the study of the subthreshold singularity and the meson

    Qu-Zhi Li🇨🇳 · Zhiguang Xiao🇨🇳 · Han-Qing Zheng🇨🇳

    We summarize recent results on studies of and scatterings. They include the finding of a negative-parity nucleon pole with a mass lower than the nucleon mass, and the pole trajectory of as the pion mass varies. The results are obtained from model-independent dispersion analyses. We also study the thermal properties of based on the model and method.

    Comments:
    15 pages, 7 figures, new results updated, to appear in EPJST
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Lattice (hep-lat); Nuclear Theory (nucl-th)
    arXiv:
    2505.24674 [pdf]
    Eur.Phys.J.ST(2026)·5 citations

Affiliations

first authorsco-authorsvia INSPIRE