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Nuclear Theory·nucl-th

Wednesday·June 18, 2025

7 papers—4 primary·3 cross-listed

All7Primary4Cross-lists3
  1. 01

    [Submitted on 15 Jun 2025]

    KHIFC-user friendly program for studying Heavy ion fusion barrier characteristics

    H.C. Manjunatha · P.S. Damodara Gupta · N. Sowmya · K.N. Sridhar

    We have developed an application for studying heavy ion fusion barrier characteristics such as such as fusion barrier heights (), positions () and curvature of the inverted parabola (). We call this application as KHIFC (Kolar Heavy Ion fusion barrier Characteristics). This software application hosted in the domain "https://systematics-of-heavy-ion-fusion.vercel.app/". This KHIFC produces fusion cross-sections with the simple input of projectile, target and center of mass energy. The values produced by the KHIFC is validated with experiments. Efficient tools like KHIFC are essential for researchers in nuclear physics, particularly when dealing with complex systems such as actinide and superheavy nuclei. By providing quick calculations and insights, it can significantly aid in experiment planning and theoretical investigations.

    Subjects:
    Nuclear Theory (nucl-th); Nuclear Experiment (nucl-ex)
    arXiv:
    2506.13823 [pdf]
    0 citations
  2. 02

    [Submitted on 16 Jun 2025]

    Particle spectra in the integrated hydrokinetic model at RHIC Beam-Energy-Scan energies

    Narendra Rathod🇵🇱 · Yuri Sinyukov🇵🇱 · Musfer Adzhymambetov🇺🇦 · Hanna Zbroszczyk🇵🇱

    We study light-hadron production in Au+Au collisions at GeV using an extended Integrated HydroKinetic Model (iHKMe). Focusing on transverse momentum spectra, we investigate the sensitivity to key model parameters, particularly the thermalization timescale. We consider two distinct equations of state: one featuring a crossover and the other a first-order phase transition. In both cases, thermalization begins shortly before full nuclear overlap and lasts approximately 1~fm/ across all energies. Both equations of state provide a similarly good description of the soft particle momentum spectra once the other parameters are slightly adjusted. The most pronounced differences arise at the lower RHIC BES energy of ~GeV, particularly in proton and kaon yields, reflecting their sensitivity to the freeze-out parameters.

    Comments:
    Published in Phys. Rev. C 113, 024911 (2026)
    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph)
    arXiv:
    2506.13944 [pdf]
    PRC(2026)·3 citations
  3. 03

    [Submitted on 17 Jun 2025]

    Phenomenological refinement of - elastic scattering descriptions towards the 3NF study in nuclei via the () reaction

    Yoshiki Chazono · Tokuro Fukui · Futoshi Minato · Yukinobu Watanabe · Kazuyuki Ogata

    The () reaction is expected to be a powerful tool for probing three-nucleon forces (3NFs) in nuclear medium since it can be essentially regarded as the - elastic scattering inside nuclei. One of the important points in the theoretical description of the () reaction is to calculate the - scattering in a nucleus quantitatively using effective interactions. This work aims to develop a phenomenological approach to improve the quantitativity of the - scattering cross section in free space calculated with effective interactions. The - elastic amplitude is decomposed into a 2N part, described using 2N effective interactions, and a residual part, which the 2N part cannot describe. The latter is approximated by a superposition of Legendre polynomials, with coefficients treated as adjustable parameters. These parameters are determined to reproduce experimental - differential cross-section data at various incident energies. The obtained parameters exhibit smooth energy dependence, which is approximated by quadratic functions. The numerical results with the analytic energy dependence also reproduce the experimental data. The developed approach works well for improving the - scattering cross section in a wide range of incident energies. This work can be regarded as the first step toward the description of () reactions taking 3NF effect in nuclear medium into account.

    Comments:
    11 pages, 3 captioned figures, 2 tables, resubmitted to PTEP
    Subjects:
    Nuclear Theory (nucl-th); Nuclear Experiment (nucl-ex)
    arXiv:
    2506.14338 [pdf]
    0 citations
  4. 04

    [Submitted on 17 Jun 2025]

    Quantitative predictions of alpha-charmonium correlation functions in high-energy collisions

    Faisal Etminan🇮🇷

    Two-body -charmonium potentials in the single-folding potential (SFP) approach are built by using a first principles HAL QCD low-energy and interactions. The potentials are observed to exhibit an attractive nature across all distances, accompanied by a characteristic long-range tail. It is found that the system appears to be loosely bound with the central binding energy in the range of 0.1-0.6 MeV, while for spin- , no bound or resonance state (with respect to the threshold) was found. The correlation function in high-energy collisions is examined to explore the interaction. The analysis revealed that variations in spin-dependent interactions-spin- , spin- , spin- , and the spin-averaged -produce noticeable differences in the correlation function, especially when the source size is around fm. It is found that different results are produced by the Lednicky-Lyuboshits formula at small source sizes. This indicates that a relatively long-range interaction exists for the system. Furthermore, a comparison has been conducted between two density functions of the central depression (CD) and the simple single Gaussian (SG) density-both of which share an identical rms radius of 1.56 fm. Although the binding energies for the two models are nearly indistinguishable, their corresponding correlation functions demonstrate markedly different behaviors.

    Comments:
    22 pages, 11 figures, 2 Tables
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    2506.14724 [pdf]
    Sci.Rep.(2026)·3 citations
  5. 05

    [Submitted on 16 Jun 2025] (cross-list from hep-ph)

    Deep-Inelastic Scattering at TeV Energies with LHC Muons

    Reinaldo Francener🇧🇷 · Victor P. Goncalves🇧🇷 · Felix Kling🇩🇪 · Peter Krack🇳🇱 · Juan Rojo🇳🇱

    The LHC far-forward experiments FASER and SND@LHC have pioneered the detection of TeV-energy neutrinos produced in hard-scattering proton-proton collisions at the LHC. In addition to neutrinos, an intense flux of TeV-energy muons reaches these detectors, representing a dominant background for both neutrino studies and beyond the Standard Model searches. Here we demonstrate that this forward muon flux enables a comprehensive neutral-current deep-inelastic scattering (DIS) program at FASER with a strong kinematical overlap with the Electron Ion Collider. For the Run 3 luminosity of ~fb, more than inclusive muon DIS events, of which up to from charm production, are expected at FASER. As a representative application, we demonstrate the sensitivity of muon DIS at FASER to probe the (intrinsic) charm content of the proton at large-. We also provide predictions for event yields of muon DIS for future FASER runs and for the proposed Forward Physics Facility.

    Comments:
    27 pages, 18 figures, 4 tables. Version accepted for publication in EPJC
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Experiment (hep-ex); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
    arXiv:
    2506.13889 [pdf]
    EPJC(2025)·10 citations
  6. 06

    [Submitted on 16 Jun 2025] (cross-list from hep-ph)

    Enhancement of axial anomaly effects in hot two-color QCD: FRG approach in the linear sigma model

    Gergely Fejős🇭🇺 · Daiki Suenaga🇯🇵

    We investigate the thermal properties of hadrons in two-color quantum chromodynamics (QCD) using the functional renormalization group (FRG) method, with particular focus on modifications of the axial anomaly effects. The hadrons are described by a linear sigma model (LSM) based on the Pauli-Gürsey symmetry, which incorporates both low-lying mesons and diquark baryons. We find that all quartic couplings are comparably suppressed when physical values of the pion mass and decay constant are taken as inputs, for which a reasonably smooth chiral symmetry restoration at finite temperature is reproduced. Consequently, mass differences among chiral partners remain small. Despite these tiny mass differences, mass degeneracies of chiral partners in the hot medium are clearly demonstrated, consistent with chiral symmetry restoration. Moreover, we find that the couplings responsible for the axial anomaly are enhanced upon entering the finite temperature regime. Baryonic fluctuations also provide sizable contributions to these enhancements. Finally, the fate of the topological susceptibility in the hot QCD medium is examined.

    Comments:
    16 pages, 8 figures
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Lattice (hep-lat); Nuclear Theory (nucl-th)
    arXiv:
    2506.14010 [pdf]
    PRD(2025)·5 citations
  7. 07

    [Submitted on 17 Jun 2025] (cross-list from hep-ph)

    Study of the beyond standard model interaction using Coherent Elastic Neutrino-Nucleus Scattering process

    S. P. Behera🇮🇳 · S. Panda🇮🇳 · D. K. Mishra🇮🇳

    We have conducted an extensive study that highlights the potential of the Indian Coherent Neutrino-nucleus Scattering Experiment (ICNSE) detector in constraining neutrino-quark interactions that go beyond the standard model. By utilizing reactors with varied core configurations and power outputs as sources for electron antineutrinos, and operating with a target mass of 10 kg over a year, our findings reveal that the ICNSE detector is remarkably effective in narrowing down the vast majority of the Non-standard Interaction (NSI) parameter space. Moreover, incorporating results from two distinct detectors, like sapphire and high-purity germanium, markedly enhances sensitivity by reducing the degeneracies between some pairs of NSI parameters to a smaller region.This research highlights its role in enabling future developments and investigations.

    Comments:
    Published version
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Experiment (hep-ex); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
    arXiv:
    2506.14443 [pdf]
    JHEP(2026)·0 citations

Affiliations

first authorsco-authorsvia INSPIRE