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Nuclear Theory·nucl-th

Thursday·November 26, 2020

5 papers—3 primary·2 cross-listed

All5Primary3Cross-lists2
  1. 04

    [Submitted on 20 Nov 2020] (cross-list from hep-ph)

    Investigating the transverse momentum dependent gluon Sivers function in quarkonium production at colliders

    U. D'Alesio🇮🇹 · F. Murgia🇮🇹 · C. Pisano🇮🇹

    In this contribution, we will present a short overview of the transverse momentum dependent (TMD) approach as a tool for studying the 3-dimensional structure of hadrons in high-energy (un)polarized hadron collisions. We will then summarize the present status of a running research programme that aims at constraining the poorly known transverse momentum dependent gluon Sivers function, through the study of single spin asymmetries in quarkonium (mainly ), pion, and -meson production in polarized proton-proton collisions at RHIC. Finally, we will shortly discuss perspectives for this field of research, emphasizing in particular its role in the physics programme of LHC in the fixed-target setup and NICA.

    Comments:
    21 pages, 6 figures (10 plots); Invited contribution to the Few-Body Systems special issue "New Trends in Hadron Physics: a Few-Body Perspective"
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
    arXiv:
    2011.10350 [pdf]
    Few Body Syst.(2021)·1 citation
  2. 05

    [Submitted on 24 Nov 2020] (cross-list from hep-th)

    Non-dissipative second-order transport, spin, and pseudo-gauge transformations in hydrodynamics

    Shiyong Li🇺🇸 · Mikhail A. Stephanov🇺🇸 · Ho-Ung Yee🇺🇸

    We derive a set of nontrivial relations between second-order transport coefficients which follow from the second law of thermodynamics upon considering a regime close to uniform rotation of the fluid. We demonstrate that extension of hydrodynamics by spin variable is equivalent to modifying conventional hydrodynamics by a set of second-order terms satisfying the relations we derived. We point out that a novel contribution to the heat current orthogonal to vorticity and temperature gradient reminiscent of the thermal Hall effect is constrained by the second law.

    Comments:
    7 pages, accepted for publication in PRL
    Subjects:
    High Energy Physics — Theory (hep-th); Nuclear Theory (nucl-th)
    arXiv:
    2011.12318 [pdf]
    PRL(2021)·150 citations

Affiliations

first authorsco-authorsvia INSPIRE