PaperPanorama
FAQ

Nuclear Theory·nucl-th

Monday·June 26, 2023

6 papers—3 primary·3 cross-listed

All6Primary3Cross-lists3
  1. 04

    [Submitted on 22 Jun 2023] (cross-list from hep-ph)

    Real Time Quarkonium Transport Coefficients in Open Quantum Systems from Euclidean QCD

    Bruno Scheihing-Hitschfeld🇺🇸 · Xiaojun Yao🇺🇸

    Recent open quantum system studies showed that quarkonium time evolution inside the quark-gluon plasma is determined by transport coefficients that are defined in terms of a gauge invariant correlator of two chromoelectric field operators connected by an adjoint Wilson line. We study the Euclidean version of the correlator for quarkonium evolution and discuss the extraction of the transport coefficients from this Euclidean correlator, highlighting its difference from other problems that also require reconstructing a spectral function, such as the calculation of the heavy quark diffusion coefficient. Along the way, we explain why the transport coefficient differs from at finite temperature at , in spite of the fact that their corresponding spectral functions differ only by a temperature-independent term at the same order. We then discuss how to evaluate the Euclidean correlator via lattice QCD methods, with a focus on reducing the uncertainty caused by infrared renormalons in determining the renormalization factor nonperturbatively.

    Comments:
    12 pages, 1 figure
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Lattice (hep-lat); Nuclear Theory (nucl-th)
    arXiv:
    2306.13127 [pdf]
    PRD(2023)·43 citations
  2. 05

    [Submitted on 22 Jun 2023] (cross-list from astro-ph.HE)

    Rapidity dependence of nuclear coalescence: impact on cosmic ray antinuclei

    Kfir Blum🇮🇱

    Upcoming studies at the Large Hadron Collider (LHC) aim to extend the rapidity coverage in measurements of the production cross section of antinuclei and . We illustrate the impact of such studies on cosmic ray (CR) flux predictions, important, in turn, for the interpretation of results from CR experiments. We show that, in terms of the rapidity effect, covering the range at the LHC should be sufficient for the astrophysical CR calculation. Important extrapolation remains in other aspects of the problem, notably .

    Comments:
    8 pages, 5 figures. v2: updated references, including updated measurements of anti-He3 yield with reduced uncertainty. Added plots for anti-protons and anti-He3 in appendix
    Subjects:
    High Energy Astrophysical Phenomena (astro-ph.HE); High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
    arXiv:
    2306.13165 [pdf]
    PRC(2024)·4 citations
  3. 06

    [Submitted on 23 Jun 2023] (cross-list from hep-ph)

    Disoriented isospin condensates may be the source of anomalous kaon correlations measured in Pb-Pb collisions at TeV

    Joseph I. Kapusta🇺🇸 · Scott Pratt🇺🇸 · Mayank Singh🇺🇸

    The magnitude of fluctuations between charged and neutral kaons measured by the ALICE Collaboration in heavy-ion collisions at the LHC exceeds conventional explanation. Here it is shown that if the scalar condensate, which is typically associated with chiral symmetry, is accompanied by an isospin=1 field, then the combination can produce large fluctuations where . Hadronizing strange and anti-strange quarks might then strongly fluctuate between charged ( or ) and neutral ( or ) kaons.

    Comments:
    5 pages, 4 figures
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
    arXiv:
    2306.13280 [pdf]
    PRC(2024)·10 citations

Affiliations

first authorsco-authorsvia INSPIRE