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Nuclear Theory·nucl-th

Wednesday·June 18, 2025

7 papers—4 primary·3 cross-listed

All7Primary4Cross-lists3
  1. 01

    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.

    nucl-thnucl-ex0 citations
  2. 02

    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.

    nucl-thhep-phPRC(2026)·3 citations
  3. 03

    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.

    nucl-thnucl-ex0 citations
  4. 04

    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.

    nucl-thSci.Rep.(2026)·3 citations

Affiliations

first authorsco-authorsvia INSPIRE