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Nuclear Theory·nucl-th

Thursday·September 29, 2022

9 papers—2 primary·7 cross-listed

All9Primary2Cross-lists7
  1. 01

    [Submitted on 28 Sept 2022]

    Light-Front Holography Model of the EMC Effect

    Dmitriy N. Kim🇺🇸 · Gerald A. Miller🇺🇸

    A new two-component model of the EMC effect based on Light-Front Holographic QCD (LFHQCD) is presented. The model suggests the EMC effect is the result of the nuclear potential breaking SU(6) symmetry. The model separates the nuclear structure function into two parts: a free contribution, involving the addition of proton and neutron structure functions weighted by the number of protons and neutrons respectively, and a nuclear/medium modified contribution that involves a universal function for all nuceli. Further, the model displays a connection with the correlation between the size of the EMC effect and the SRC pair density, - extracted from kinematic plateaus at around > 1 in inclusive quasi-elastic (QE) scattering.

    Comments:
    arXiv admin note: text overlap with arXiv:2008.06524
    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph); Nuclear Experiment (nucl-ex)
    arXiv:
    2209.13753 [pdf]
    PRC(2022)·14 citations
  2. 02

    [Submitted on 28 Sept 2022]

    A Detailed Analysis of the Special Points on Solutions of Hybrid (Twin) Stars

    Debashree Sen🇮🇳 · Naosad Alam🇮🇳 · Gargi Chaudhuri🇮🇳

    Hadron-quark phase transition in neutron star cores is achieved in the present work with the help of Maxwell construction. For the purpose we employ six different and well-known hadronic models for the pure hadronic phase. The quark phase is described with the MIT Bag model in which the density dependence of the bag pressure is invoked for different asymptotic values () of . The resulting hybrid star (HS) configurations exhibit twin star characteristics and distinct special points (SPs) on the mass-radius diagram of the HSs irrespective of the transition densities and the value of . We find that for any particular value of , the mass corresponding to SP () and the maximum mass () of the HSs, obtained with different hadronic models, follow a nearly linear (fitted) relationship where the slope is independent of the value of . The dependence of the HSs is found to be consistent with any hadronic equation of state (EoS) chosen to obtain the hybrid EoS and thus such relations can be considered as universal relations in the context of formation of SPs. A change in the value of shifts the position of the fitted line in the plane, with the linearity, however, retained.

    Comments:
    13 pages; 7 figures; Accepted for Publication in Physical Review D https://journals.aps.org/prd/accepted/b107bQ7fEb41083340418474f8dc31f6f0a84d6b2
    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph)
    arXiv:
    2209.13890 [pdf]
    PRD(2022)·20 citations

Affiliations

first authorsco-authorsvia INSPIRE