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Nuclear Theory·nucl-th

Wednesday·June 24, 2020

12 papers—7 primary·5 cross-listed

All12Primary7Cross-lists5
  1. 08

    [Submitted on 19 Jun 2020] (cross-list from hep-ph)

    Revisiting the proton mass decomposition

    Andreas Metz🇺🇸 · Barbara Pasquini🇮🇹 · Simone Rodini🇮🇹

    Different decompositions (sum rules) for the proton mass have been proposed in the literature. All of them are related to the energy-momentum tensor in quantum chromodynamics. We review and revisit these decompositions by paying special attention to recent developments with regard to the renormalization of the energy-momentum tensor. The connection between the sum rules is discussed as well. We present numerical results for the various terms of the mass decompositions up to 3 loops in the strong coupling, and consider their scheme dependence. We also elaborate on the role played by the trace anomaly and the sigma terms.

    Comments:
    28 pages; V2: some discussion added, matches PRD version
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Lattice (hep-lat); Nuclear Theory (nucl-th)
    arXiv:
    2006.11171 [pdf]
    PRD(2021)·100 citations
  2. 09

    [Submitted on 22 Jun 2020] (cross-list from hep-ph)

    Charm jets as a probe for strangeness at the future Electron-Ion Collider

    Miguel Arratia🇺🇸 · Yulia Furletova🇺🇸 · T. J. Hobbs🇺🇸 · Fredrick Olness🇺🇸 · Stephen J. Sekula🇺🇸

    We explore the feasibility of the measurement of charm-jet cross sections in charged-current deep-inelastic scattering at the future Electron-Ion Collider. This channel provides clean sensitivity to the strangeness content of the nucleon in the high- region. We estimate charm-jet tagging performance with parametrized detector simulations. We show the expected sensitivity to various scenarios for strange parton distribution functions. We argue that this measurement will be key to future QCD global analyses, so it should inform EIC detector designs and luminosity requirements.

    Comments:
    17 pages, 12 figures, 2 tables; added new plots showing PDF error bands in s(x,Q) and Rs(x,Q) to illustrate range of uncertainty on these quantities
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Experiment (hep-ex); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
    arXiv:
    2006.12520 [pdf]
    PRD(2021)·43 citations
  3. 10

    [Submitted on 22 Jun 2020] (cross-list from cond-mat.stat-mech)

    Universal location of the Yang-Lee edge singularity in O(N) theories

    Andrew Connelly🇺🇸 · Gregory Johnson🇺🇸 · Fabian Rennecke🇺🇸 · Vladimir Skokov🇺🇸

    We determine a previously unknown universal quantity, the location of the Yang-Lee edge singularity for the O() theories in a wide range of and various dimensions. At large , we reproduce the analytical result on the location of the singularity and, additionally, we obtain the mean-field result for the location in dimensions. In order to capture the nonperturbative physics for arbitrary , and complex-valued external fields, we use the functional renormalization group approach.

    Comments:
    6 pages, 2 figures; version accepted for publication in PRL
    Subjects:
    Statistical Mechanics (cond-mat.stat-mech); High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
    arXiv:
    2006.12541 [pdf]
    PRL(2020)·64 citations
  4. 11

    [Submitted on 22 Jun 2020] (cross-list from hep-ph)

    A Somewhat Random Walk Through Nuclear and Particle Physics

    Thomas D. Cohen🇺🇸 · Nicholas R. Poniatowski🇺🇸

    These notes are an outgrowth of an advanced undergraduate course taught at the University of Maryland, College Park. They are intended as an introduction to various aspects of particle and nuclear physics with an emphasis on the role of symmetry. The basic philosophy is to introduce many of the fundamental ideas in nuclear and particle physics using relatively sophisticated mathematical tools -- but to do so in as a simplified a context to explain the underlying ideas. Thus, for example, the Higgs mechanism is discussed in terms of an Abelian Higgs model. The emphasis is largely, but not entirely theoretical in orientation. The goal is for readers to develop an understanding of many of the underlying issues in a relatively sophisticated way.

    Comments:
    158 pages; submission to SciPost Lecture Notes
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Experiment (hep-ex); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
    arXiv:
    2006.12564 [pdf]
    SciPost Phys.Lect.Notes(2021)·0 citations
  5. 12

    [Submitted on 23 Jun 2020] (cross-list from astro-ph.HE)

    Large-scale Simulations of Antihelium Production in Cosmic-ray Interactions

    Anirvan Shukla🇺🇸 · Amaresh Datta🇺🇸 · Philip von Doetinchem🇺🇸 · Diego-Mauricio Gomez-Coral🇺🇸 · Carina Kanitz🇩🇪

    The possibility of antihelium production in interaction of cosmic rays with the interstellar gas is studied using large-scale Monte Carlo simulations. For this purpose, an energy-dependent coalescence mechanism developed previously is extended to estimate the production of light antinuclei ( and ). The uncertainty in the coalescence parameter and its effect on the expected antiparticle flux is also investigated. The simulated background antihelium fluxes are found to be lower than the fluxes predicted by simplified models using numerical scaling techniques.

    Comments:
    16 figures
    Subjects:
    High Energy Astrophysical Phenomena (astro-ph.HE); High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
    arXiv:
    2006.12707 [pdf]
    PRD(2020)·32 citations

Affiliations

first authorsco-authorsvia INSPIRE