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Nuclear Theory·nucl-th

Monday·February 13, 2023

4 papers—2 primary·2 cross-listed

All4Primary2Cross-lists2
  1. 03

    [Submitted on 9 Feb 2023] (cross-list from hep-ph)

    Two-loop hard thermal loops for any model

    Andreas Ekstedt🇩🇪

    Hard thermal loops describe how soft gauge fields are screened and damped in hot plasmas. As such they are used to calculate transport coefficients, Sphaleron rates, equations of state, and particle production. However, most calculations are done using one-loop self-energies. And two-loop contributions can be large. To that end this paper provides vector two-loop self-energies for generic models: Any scalar, fermion, or vector representation; and all possible renormalizable terms. Several examples are given to showcase the results. Two-loop results for higher-point functions are also given.

    Comments:
    25 pages, 2 figures
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Theory (hep-th); Nuclear Theory (nucl-th)
    arXiv:
    2302.04894 [pdf]
    JHEP(2023)·15 citations
  2. 04

    [Submitted on 9 Feb 2023] (cross-list from hep-ex)

    Model-independent Odderon results based on TOTEM data on elastic proton-proton scattering at 8 TeV

    T. Csörgő ((1) and (2))🇭🇺 · T. Novák (2)🇭🇺 · R. Pasechnik (3)🇸🇪 · A. Ster (1)🇭🇺 · I. Szanyi (1, 2 and 4) ((1) Wigner RCP, Budapest, Hungary, (2) MATE Institute of Technology KRC, Gyöngyös, Hungary, (3) University of Lund, Lund, Sweden and (4) Eötvös University, Budapest, Hungary)🇭🇺

    We complete the model-independent analysis of the scaling properties of the differential cross section of elastic proton-proton cross sections, including new TOTEM data published in 2022 at TeV. We separate the signal and the background region with a new gating method. In the signal region, we find that the statistical significance of Odderon exchange from the combined 7.0 and 8.0 TeV data of TOTEM and the 1.96 TeV data of D0 is at least 7.32. In the background region, the scaling functions of elastic proton-proton data at 7 and 8 TeV and that of elastic proton-antiproton scattering data at 1.96 TeV agree with a statistical significance not larger than 1.93.

    Comments:
    6 pages, 1 figures, accepted for publication in Acta Phys. Polon. B Proc. Suppl., invited talk of T. Csörgő at the Diffraction and Low-x 2022 conference, Corigliano Calabro (Italy), September 24-30, 2022
    Subjects:
    High Energy Physics — Experiment (hep-ex); High Energy Physics — Phenomenology (hep-ph); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
    arXiv:
    2302.04930 [pdf]
    Acta Phys.Polon.Supp.(2023)·2 citations

Affiliations

first authorsco-authorsvia INSPIRE