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Nuclear Theory·nucl-th

Monday·April 24, 2023

7 papers—4 primary·3 cross-listed

All7Primary4Cross-lists3
  1. 05

    [Submitted on 21 Apr 2023] (cross-list from hep-ph)

    Effects of clustered nuclear geometry on the anisotropic flow in O-O collisions at the LHC within a multiphase transport model framework

    Debadatta Behera🇮🇳 · Suraj Prasad🇮🇳 · Neelkamal Mallick🇮🇳 · Raghunath Sahoo🇮🇳

    To understand the true origin of flowlike signatures and applicability of hydrodynamics in small collision systems, effects of soft QCD dynamics, the sensitivity of jetlike correlations, and nonequilibrium effects, efforts are being made to perform \textit{p}-O and O-O collisions at the LHC and RHIC energies. It is equally interesting to look into the possible signatures of an -clustered nuclear geometry in O-O collisions by studying the initial-state effects on the final-state observables. In this work, within a multiphase transport model, we implement an -cluster tetrahedral density profile in the oxygen nucleus along with the default Woods-Saxon density profile. We study the eccentricity (), triangularity (), normalized symmetric cumulants [NSC(2,3)], elliptic flow (), and triangular flow () in O-O collisions at TeV. The constituent quark number scaling of the elliptic flow is also reported. For the most central collisions, enhanced effects in and with a negative value of NSC(2,3), and an away-side broadening in the two-particle azimuthal correlation function [] of the identified particles are observed in the presence of an -clustered geometry.

    Comments:
    Same as the published version in Phys. Rev. D
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Experiment (hep-ex); High Energy Physics — Theory (hep-th); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
    arXiv:
    2304.10879 [pdf]
    PRD(2023)·28 citations
  2. 06

    [Submitted on 21 Apr 2023] (cross-list from hep-lat)

    Pion screening mass at finite chemical potential

    Rishabh Thakkar🇮🇳 · Prasad Hegde🇮🇳

    We present a method to compute the responses of meson screening masses to the chemical potential by Taylor expanding the correlator using lattice QCD simulation. We start by comparing the free theory lattice results with the analytical expression. Then, using symmetry arguments, we obtain an expression for the correlator in a series of the chemical potential at finite temperature. Using this, we obtain the lowest order correction to the screening mass at a finite chemical potential for temperatures around 2.5 GeV. Our lattice analysis is limited to isoscalar chemical potential for the pseudoscalar channel. The calculations were performed using (2+1)-flavors of the Highly Improved Staggered Quark (HISQ/tree) action, with the ratio of the strange quark mass to the light quark mass corresponding to pion masses of 160 MeV.

    Comments:
    18 pages, 15 figures; updated version of the paper
    Subjects:
    High Energy Physics — Lattice (hep-lat); High Energy Physics — Phenomenology (hep-ph); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
    arXiv:
    2304.10884 [pdf]
    JHEP(2023)·3 citations
  3. 07

    [Submitted on 21 Apr 2023] (cross-list from hep-ph)

    Multi-skyrmion states in the Skyrme model with false vaccum potential

    Jun-Shuai Wang🇨🇳 · Yong-Liang Ma🇨🇳

    We study the multi-skyrmion states using a Skyrme model with false vacuum potential upto baryon number using the product ansatz. It is found that, both the false vacuum potential and true vacuum potential can yield cluster structure of the multi-skyrmion states. The effect of the explicit chiral breaking on the masses and the contour surfaces of the baryon number density of the multi-skyrmion states are analyzed.

    Comments:
    4 pages, 4 figures
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Theory (hep-th); Nuclear Theory (nucl-th)
    arXiv:
    2304.10982 [pdf]
    CPC(2023)·0 citations

Affiliations

first authorsco-authorsvia INSPIRE