Nuclear Theory·nucl-th

Wednesday·June 25, 2025

10 papers—4 primary·6 cross-listed

01
[Submitted on 23 Jun 2025]
Probing jet-medium interactions via jet substructure observables in relativistic heavy-ion collisions
Xiang-Pan Duan🇨🇳 · Tan Luo🇨🇳 · Guo-Liang Ma🇨🇳
We present a comprehensive study of jet substructure observables in $pp$ and PbPb collisions at $s_{N N} = 5.02$ ~TeV using a multi-phase transport model. To suppress background contamination, the constituent subtraction method is employed for both PbPb and smeared $pp$ events. The jet splitting momentum fraction ( $z_{g}$ ) and the groomed jet mass to the ungroomed jet transverse momentum ( $M_{g} / p_{T, jet}$ ) are reconstructed using the Soft Drop algorithm with two grooming parameter settings. With $z_{cut} = 0.1$ and $β = 0.0$ , a slight modification in the $z_{g}$ distribution is observed in central PbPb collisions, whereas a pronounced enhancement in the high $M_{g} / p_{T, jet}$ region is found, particularly at low $p_{T, jet}$ and in more central events. A detailed analysis of the dynamical evolution stages reveals that this enhancement primarily originates from jet-medium interactions, whereas the contributions from hadronization and hadronic rescatterings are largely mitigated by the grooming procedure. In contrast, under a stronger grooming condition ( $z_{cut} = 0.5$ , $β = 1.5$ ), no significant changes in $M_{g} / p_{T, jet}$ are observed, indicating that the medium-induced modifications are predominantly associated with large-angle scattering.
Comments:
11 pages, 7 figures
Subjects:
Nuclear Theory (nucl-th); High Energy Physics — Experiment (hep-ex); High Energy Physics — Phenomenology (hep-ph); Nuclear Experiment (nucl-ex)
arXiv:
2506.19033 [pdf]
Nucl.Sci.Tech.(2026)·3 citations
02
[Submitted on 24 Jun 2025]
Study of entanglement in Ne, Mg, and Si isotopic chains
Rohit M. Shinde · Praveen C. Srivastava
In this article, we have presented the results for mode entanglement and its evolution in Ne, Mg, and Si isotopic chains. A detailed study has also been conducted on the role of nuclear forces with the assistance of the spin-tensor decomposition of two-body interaction into three components: central, spin-orbit, and tensor. This study can shed light on the high entanglement entropy observed for $N = Z$ nuclei and the importance of the tensor component on the proton-neutron entanglement entropy.
Comments:
10 pages, 5 figures
Subjects:
Nuclear Theory (nucl-th); Quantum Physics (quant-ph)
arXiv:
2506.19437 [pdf]
J.Subatomic Part.Cosmol.(2025)·3 citations
03
[Submitted on 24 Jun 2025]
Determination of Asymptotic Normalization Coefficients Based on the Dispersive Optical Model
O.V. Bespalova · L.D. Blokhintsev · A.A. Klimochkina · D.A. Savin
A method for determining asymptotic normalization coefficients for removing nucleons from nuclei is proposed. It is based on the use of the dispersive optical model potential. Within the method, the strength parameter of the Hartree- Fock type potential at the Fermi energy is the only one fitting parameter. It was found that adjusting this parameter allows us to achieve a coincidence of the calculated binding energies with the experimental ones accurately enough. Specific calculations were carried out for 17O, 17F, 41Ca, and 41Sc nuclei. An acceptable agreement with the results of other works, which are characterized by a noticeable spread, was achieved.
Comments:
8 pages, 1 figure, 1 table
Subjects:
Nuclear Theory (nucl-th)
arXiv:
2506.19664 [pdf]
Chin.J.Phys.(2025)·0 citations
04
[Submitted on 24 Jun 2025]
Perfect spinfluid: A divergence-type approach
Nick Abboud🇺🇸 · Lorenzo Gavassino🇺🇸 · Rajeev Singh🇷🇴 · Enrico Speranza🇨🇭
We present a new formulation of non-dissipative relativistic spin hydrodynamics that incorporates spin degrees of freedom into the divergence-type theory framework. Due to the divergence-type structure, it is straightforward to enforce non-linear causality and symmetric hyperbolicity of the equations of motion, ensuring local well-posedness of the initial-value problem and stability of the theory. Furthermore, in a specific realization based on spin kinetic theory, we prove that the equations of motion remain non-linearly causal and symmetric-hyperbolic to all orders in the spin potential, provided a specific thermodynamic constraint is satisfied. This framework can be applied for numerical simulations to study the dynamics of spin-polarized fluids, such as the quark-gluon plasma in heavy-ion collisions.
Comments:
26 pages, 2 figures. Version accepted for publication in Physical Review D
Subjects:
Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Theory (hep-th)
arXiv:
2506.19786 [pdf]
PRD(2025)·16 citations

Affiliations

first authorsco-authorsvia INSPIRE

Probing jet-medium interactions via jet substructure observables in relativistic heavy-ion collisions

Study of entanglement in Ne, Mg, and Si isotopic chains

Determination of Asymptotic Normalization Coefficients Based on the Dispersive Optical Model

Perfect spinfluid: A divergence-type approach

Affiliations