nucl-th

Combined Evidence for the $X_{17}$ Boson After PADME Results on Resonant Production in Positron Annihilation

This paper combines the recent $1.77\sigma$ excess observed by the PADME experiment in positron annihilation with previous nuclear transition anomalies to strengthen the case for a common $X_{17}$ boson origin, yielding a refined mass measurement of $16.88 \pm 0.05\,\text{MeV}$ that significantly reduces uncertainty compared to nuclear physics determinations alone.

Properties of the neutron star crust informed by nuclear structure data

This study employs a novel Bayesian framework, utilizing a comprehensive posterior distribution of nuclear matter parameters derived from nuclear structure data, to construct unified neutron star equations of state that satisfy astrophysical constraints and predict increased surface thickness and crustal moment of inertia.

Extended applicability domain of viscous anisotropic hydrodynamics in (2+1)-D Bjorken flow with transverse expansion

This paper demonstrates that (2+1)-D viscous anisotropic hydrodynamics (VAH) outperforms traditional viscous hydrodynamics in describing the evolution of boost-invariant, conformal systems across a wide range of opacities by showing superior agreement with kinetic theory, thereby extending the applicability of hydrodynamic modeling to small systems where conventional approaches struggle.

Diffractive vector meson photo-production in oxygen-oxygen and neon-neon ultraperipheral collisions at energies available at the CERN Large Hadron Collider

This paper utilizes the energy-dependent hotspot model with various nuclear shape prescriptions to predict cross sections for coherent and incoherent diffractive vector meson ($\rho^0$ and J/$\psi$) photo-production in oxygen-oxygen and neon-neon ultraperipheral collisions at the LHC, demonstrating that simultaneous measurements of these processes can constrain nuclear models and probe the gluon-saturation regime.

Dissecting the moat regime at low energies I: Renormalization and the phase structure

Decomposition of angular momentum projected nuclear wave function

This paper derives a new identity that decomposes conventional angular momentum projected nuclear wave functions into coupled neutron-proton projected bases, revealing that nucleons in even-even ground states are not fully paired and demonstrating that this decomposition enables further improvements to variation after projection shell model wave functions.

Search for the QCD Critical Point in High Energy Nuclear Collisions: A Status Report

This paper reviews recent STAR experiment results on net-proton multiplicity fluctuations from RHIC BES-II collisions to search for the QCD critical point by comparing fourth-order cumulant and factorial cumulant ratios with non-critical theoretical models while addressing initial volume fluctuations and outlining future research directions.

Finite temperature effects on g-modes of inviscid neutron stars

This paper demonstrates that the temperature dependence of secular $g$-mode frequencies in inviscid neutron stars is governed by the nuclear symmetry energy slope parameter $L$, offering a potential observational avenue to constrain the density dependence of the symmetry energy.

Parameter-free deformation variables of the proxy-SU(3) symmetry in even-even atomic nuclei with Z=28-82, N=28-126

This paper provides complete tables of the highest weight and next highest weight irreducible representations within the parameter-free proxy-SU(3) symmetry framework, offering predictions for the collective deformation variables ($\beta$ and $\gamma$) of even-even atomic nuclei across the $Z=28\text{--}82$ and $N=28\text{--}126$ regions.

Symplectic no-core configuration interaction framework for nuclear structure

This paper presents the Symplectic No-Core Configuration Interaction (SpNCCI) framework, which solves the nuclear many-body problem using a symmetry-adapted Sp(3,R) basis and introduces a recurrence-based method for computing matrix elements of realistic operators by first decomposing them into U(3) tensor components.