The thermal modification of the exclusive decay $K_1^{+}\left(1270\right)\to {\pi }^{+}{\pi }^{-}{K}^{+}$ in a hot hadronic medium is studied. The decay amplitude is constructed from effective hadronic interactions dominated by the $\rho$- and $K^{*}$-pole contributions, thereby enabling a Dalitz-level analysis of the three-body decay in the medium. Thermal effects associated with partial chiral-symmetry restoration are incorporated through a phenomenological interpolation toward vector–axial-vector degeneracy near the chiral crossover. As the temperature increases, the reduction of the parent $K_1$ mass strongly compresses the available three-body phase space, leading to substantial deformation of the Dalitz distribution and invariant-mass spectra, as well as to a pronounced suppression of ${\mathrm{\Gamma }}_{K_1\to {\pi }^{+}{\pi }^{-}{K}^{+}}\left(T\right)$. As a further step toward future transport-based phenomenological comparisons, Normalized shape observables are introduced to quantify the thermal evolution of the $K^{*}$-dominated $\pi K$ region, the upper-edge weight of the $\pi \pi$ spectrum, and the compactification of the Dalitz population. The dominant effect identified in the present framework is therefore kinematic: thermal phase-space reduction in the strange axial-vector channel. These results suggest that the exclusive $K_1\left(1270\right)$ channel may provide a useful qualitative probe of in-medium strange axial-vector dynamics near the pseudocritical region.

A Bayesian analysis of the astrophysical $S$ factor for the ${}^{12}\mathrm{C}+{}^{12}\mathrm{C}$ fusion reaction is presented using available low-energy information at carbon-carbon relative energies $E<3.5\mathrm{MeV}$, including direct measurements and recent inverse-kinematics data. The goal of the global Bayesian fit is not to reproduce the local resonance-by-resonance structure of the ${}^{12}\mathrm{C}+{}^{12}\mathrm{C}$ system, but rather to constrain the smooth global component of $S^{*}\left(E\right)$ using the direct and inverse-kinematics constraints. A conservative uncertainty model is adopted in order to combine heterogeneous datasets with different systematic uncertainties and normalizations. The inference is performed for $y\left(E\right)={log}_{10}{S}^{*}\left(E\right)$, which reduces the dynamic range of the data and leads to approximately Gaussian uncertainties. The function $y\left(E\right)$ is represented by a quadratic polynomial, and the posterior distribution of its coefficients is determined. Propagation of this posterior gives the median smooth curve and the corresponding $68\%$ posterior interval for $S^{*}\left(E\right)$. The resulting posterior $S^{*}\left(E\right)$ lies systematically below the traditional FCZ75 reference normalization over the energy interval considered. For example, at $E=1.5\mathrm{MeV}$ the median posterior value is $S^{*}\left(1.5\mathrm{MeV}\right)=1.20\times {10}^{16}\mathrm{keV}\mathrm{b}$, whereas the Fowler–Caughlan–Zimmerman reference value is $S_{\mathrm{FCZ}75}^{*}=3.0\times {10}^{16}\mathrm{keV}\mathrm{b}$ [W. A. Fowler, G. R. Caughlan, and B. A. Zimmerman, Annu. Rev. Astron. Astrophys. 13, 69 (1975)]. Thus, the updated posterior favors a lower smooth low-energy trend and does not support a sharp increase of $S^{*}\left(E\right)$ as the energy decreases. The astrophysical consequence of the analysis is assessed through the thermonuclear reaction rate $N_A\langle \sigma v\rangle$. The resulting median rate is lower than the CF88 analytic rate [G. R. Caughlan and W. A. Fowler, At. Data Nucl. Data Tables 40, 283 (1988)] over the temperature interval considered, with $R_{\mathrm{present}}/R_{\mathrm{CF}88}\simeq 0.33–0.46$ for $0.3\le T_9\le 1.2$. At higher temperatures, where the Gamow window extends above the upper end of the adopted integration interval, the calculated rate should be regarded as a truncated rate rather than a complete stellar rate.

Understanding the emergence of complex structures of nuclei from chiral effective field theory (EFT) is a central challenge. The large number of low-energy couplings (LECs) in the EFT expansion and the significant cost of ab initio many-body calculations render large-scale sensitivity studies of many-body observables computationally prohibitive, necessitating the use of emulators as low-cost surrogates. In this work, we study a Hartree-Fock emulator based on eigenvector continuation to investigate trends in nuclear charge radii of neutron-rich calcium isotopes. We systematically vary the five LECs entering the leading three-nucleon ($3N$) interactions, and demonstrate the precision of the emulator through cross validation over a wide parameter space. Our findings indicate that the large charge-radius increase from ${}^{48}\mathrm{Ca}$ to ${}^{52}\mathrm{Ca}$ is likely not explained by variations of the leading $3N$ couplings. This suggests that other effects, such as sensitivities to chiral two-nucleon interactions or neglected many-body effects, e.g., associated with nuclear collectivity, play an important role.

The impact of hexadecapole correlations on the low-energy spectroscopic properties of Th, U, and Pu nuclei, within the mass range $232\le A\le 240$, is studied systematically using the mapped $sdg$-IBM model. Fermionic input is obtained via the quadrupole-hexadecapole constrained Hartree-Fock-Bogoliubov approximation, based on the parametrization D1S of the Gogny energy density functional. The $sdg$-IBM Hamiltonian parameters are determined by mapping the quadrupole-hexadecapole fermionic mean-field potential-energy surfaces onto the corresponding bosonic surfaces. The low-energy spectra and transition strengths, obtained via the diagonalization of the $sdg$-IBM Hamiltonian, compare well with the available experimental data. It is shown that the effects of hexadecapole collectivity can be observed in high-spin yrast states with spins $J^{\pi }⩾{10}^{+}$. The mapped $sdg$-IBM improves the excitation energies of those states, as compared with the simpler $sd$-IBM model. The $sdg$-IBM also improves the description of the $E2$ transition strengths between high-spin yrast states and predicts strong $E4$ transitions from nonyrast $4^{+}$ states to the $0^{+}$ ground state.

Background: double-$\alpha$ decay is an exotic nuclear decay mode that offers a sensitive probe of quantum tunneling, nuclear clustering, and barrier penetration phenomena in medium-heavy and heavy nuclei. Despite being energetically allowed for a significant fraction of nuclei, this decay mode remains experimentally unexplored. An experimental proposal to search for double-$\alpha$ decay in ${}^{224}\mathrm{Ra}$ has been advanced at the ISOLDE facility of CERN, highlighting ongoing efforts to probe this rare decay channel.

Purpose: This work presents a systematic investigation of double-$\alpha$-decay half-lives and branching ratios across the nuclear chart, to identify energetically allowed and experimentally promising candidates, as well as evaluating the predictive performance of machine-learning approaches for such rare nuclear-decay modes.

Methods: A machine-learning framework based on the extreme gradient boosting regression algorithm is employed to predict double-$\alpha$-decay half-lives for nuclei with positive double-$\alpha$-decay energy in the atomic number range $Z=60–101$. The atomic mass table AME2016 is used to determine decay energetics, and the machine-learning predictions are compared with results from the modified generalized liquid drop model [Phys. Rev. C 104, 064604 (2021)] and the semiempirical formulation of Tretyak [Nucl. Phys. At. Energy 22, 121 (2021)]. In addition, a Geiger-Nuttall-type linear relation for double-α decay is extracted from the global systematics.

Results: The predicted double-$\alpha$-decay half-lives span many orders of magnitude and show good overall agreement with established theoretical models. The machine-learning approach successfully captures the dominant dependence of the decay probability on decay energy and Coulomb barrier penetration. At the same time, deviations are attributed to shell effects, deformation, and pairing correlations in specific nuclei. A simple empirical relation linking ${log}_{10}{T}_{1/2}^{2\alpha }$ to $Z_d/\sqrt{Q_{2\alpha }}$ is proposed for double-$\alpha$ decay. The calculated branching ratios confirm the rare nature of this decay mode and identify a subset of nuclei with enhanced probabilities that may be accessible to future experiments.

Conclusion: The present study demonstrates that machine-learning methods provide a reliable and efficient framework for exploring double-$\alpha$ decay across a wide region of the nuclear chart. The results offer quantitative guidance for experimental searches and establish machine learning as a powerful complementary tool for investigating rare and exotic nuclear-decay processes.

The ratio of the nuclear binding energy to the charge radius is systematically analyzed based on the experimental data of both. The linear relationship is observed between the ratios for nuclei $(Z,N)$ and those for $(Z,N-2)$. Together with this linear relationship, the nuclear charge radius can be extracted based on the radial basis function approach. The root-mean-square (rms) deviation with respect to 1063 measured nuclear charge radii reaches 0.007 fm, and the rms deviation of the test set for the neutron-rich region is 0.014 fm. The charge radii for 1333 nuclei are extracted, including 270 unmeasured nuclei. The new probe indicates that large deformations occur in atomic nuclei starting from neutron number $N=89$ in the isotope chains with proton numbers $Z=63$ and 65, based on the analysis of nuclear binding energy and charge radius. The proposed method enables charge-radius extraction from binding-energy data alone, providing a new approach for nuclei with unmeasurable charge radii.

The global spin polarization of hyperons in heavy-ion collisions have been investigated by including spin-correlation effects among their constituent quarks. The available data on global spin polarizations of hyperons and spin alignments of vector mesons provide constraints on phase-space functions of the spin polarization and correlation. These constraints can lead to inequalities under some approximations, which might provide possible clues for the presence of quark spin correlation inside hyperons at lower collision energies.

As an extended and more complete version of the primary QCD nucleation model presented in [Phys. Rev. C 95, 024907 (2017)], the new model introduces explicitly the transition balance and formulates it in both macroscopic and microscopic descriptions. The microscopic description of the transition balance in QCD nucleation is implemented in a kinetic parton cascade model and tested for a first-order phase transition from gluons to pions in a one-dimensional expansion with Bjorken boost invariance.

Using the $\mathrm{HYDJET}++$ model, we study the production of multistrange particles $(\varphi$ and $\mathrm{\Omega })$ in $\mathrm{Au}+\mathrm{Au}$ collisions at $\sqrt{s_{NN}}=$ 11.5, 19.6, 27, 39, and 200 GeV as functions of transverse momentum and centrality. The model calculations employ earlier freeze-out hypersurfaces for multistrange particle production and are compared with STAR experimental data. Results indicate that the ++ model demonstrates a better agreement with experimental data for multistrange particles at higher energies, particularly in relation to early thermal freeze-out. Meanwhile, the default version performs more accurately for lighter, nonstrange particles at the same energy scales. We also analyze identified particle and mixed particle ratios, providing insights into strangeness enhancement. The results provide additional constraints on parton energy loss models, contributing to a more precise determination of the transport properties of hot and dense QCD matter.

We present a theoretical formalism for calculating first-order-in-opacity radiative energy loss that incorporates the spatial and temporal temperature evolution of the quark-gluon plasma (QGP) in a finite-size quantum chromodynamics medium with dynamical (i.e., moving) constituents. The derived expressions allow for general temperature profiles within a local-equilibrium (slowly varying) approximation, enabling detailed evaluations of radiative energy loss across different medium-evolution scenarios. Importantly, the resulting kernel applies to single partons $(R=0)$ and, after imposing the finite-cone selection, to the radiative out-of-cone contribution from a jet-initiating parton, providing a unified starting point for precision QGP tomography.

In the extended Linear-$\sigma$ Model (eLSM), the chiral phase structure of meson states, including pseudoscalars ($J^{pc}=0^{-+}$), scalars ($J^{pc}=0^{++}$), vectors ($J^{pc}=1^{--}$), and axial vectors ($J^{pc}=1^{++}$), is investigated with the mean-field approximation. A systematic comparison between SU(3) and SU(4) configurations is provided. It has been found that the estimations of meson masses derived from SU(4) eLSM are more congruent with experimental values than those derived from SU(3) eLSM. Consequently, we conclude that an increase in quark degrees of freedom significantly enhances the accuracy of meson mass simulations. We investigate the effect of temperature on the masses of various meson states calculated in the SU(3) and SU(4) eLSM. After establishing all the fitting parameters, the temperature dependence of meson masses shows that although various meson states exhibit unique patterns in their mass changes with temperature, they all seem to share a similar range of dissolution temperatures. This means that the critical temperature that marks the phase transition from hadrons to quarks appears to vary slightly depending on the meson states. In this regard, we find that the quarkonium states, formed by a quark and its antiquark, are largely unaffected by variations in the temperature.

Accurate determination of the neutron skin thickness $\left(\mathrm{\Delta }{R}_{\mathrm{np}}\right)$ in finite nuclei is essential for constraining the density dependence of the nuclear symmetry energy. This work presents a systematic investigation of $\mathrm{\Delta }{R}_{\mathrm{np}}$ for the transuranium berkelium (Bk) isotopes within the framework of the deformed relativistic Hartree-Bogoliubov theory in continuum (DRHBc). The results indicate an overall increase in neutron skin thickness with $N$, which exhibits antikinks at the shell closures $N=184,258$ due to the shell effects. A decomposition of $\mathrm{\Delta }{R}_{\mathrm{np}}$ into volume and surface terms, based on two-parameter Fermi (2pF) fits to angle-averaged DRHBc densities, demonstrates that the volume term dominates as much as $60\%\text{–}70\%$ in most nuclei, consistent with the $65\%$ found in ${}^{208}\mathrm{Pb}$, thereby validating the volume-surface decomposition for deformed nuclei and confirming its correlation with the symmetry energy slope $L$. The surface term prevails only near the proton drip line, where the volume fraction drops below $50\%$ due to the reduced neutron-to-proton ratio. Deformation is found to slightly reduce the central radius $R_c$ but markedly enhance the surface diffuseness $a$, leading to a notable increase in $\mathrm{\Delta }{R}_{\mathrm{np}}$, primarily driven by the surface term. Furthermore, we extend the decomposition to a directional analysis by extracting 2pF parameters along the symmetry axis $(\theta =0^{\circ })$ and perpendicular to it $(\theta ={90}^{\circ })$. In prolate deformed nuclei, a strong directional dependence is observed: although the nucleus is elongated along the symmetry axis, $\mathrm{\Delta }{R}_{\mathrm{np}}$ is significantly larger in the perpendicular direction. This anisotropy is weak for oblate nuclei around the shell closures. The anisotropy of $\mathrm{\Delta }{R}_{\mathrm{np}}$ is attributed mainly to the volume term, which remains the dominant contribution in most nuclei regardless of direction. These findings provide new theoretical insights into the interplay among deformation, the neutron skin thickness, and the symmetry energy, and offer a foundation for future experimental probes of neutron skin anisotropy in heavy-ion collisions.

The cluster structure in light nuclei has been studied by using the extended quantum molecular dynamics model. It is found that the effective number of $\alpha$ clusters in Be, B, C, N, O, and F isotope generally decreases with increasing isospin asymmetry and chain molecular structure exists in non-$\alpha$ conjugate light nuclei from the detailed investigation of the obtained cluster structure. Investigations on the different cluster structures formed in the isotopes ${}^{8,9,10}\mathrm{Be}$, ${}^{9,10}\mathrm{B}$, and ${}^{10}\mathrm{C}$ indicate that the presence of molecular covalent bonds has a significant impact on the properties of cluster structures in light nuclei. These effects include the binding energy and stability, the height and position of the giant dipole resonance (GDR) peak of the $(\alpha +\alpha )$ substructure, and the final-state $\alpha$-particle multiplicity in nuclear reactions induced by these nuclei. There are significant differences in GDR spectra for clusters with different molecular covalent bonds. GDR peak positions decrease as the nucleon-nucleon distance distribution peaks increase, and these peaks are determined by the specific cluster structure. This relationship effectively describes not only the GDR spectral variations for spherical nuclei but also the trends and peak splitting phenomena observed in light nuclei with molecular structures.

High-energy neutron emissions from the reactions of ${}^{40}\mathrm{Ar}$ on natural C, Cu, and Pb targets at $E_{\mathrm{inc}}/A=$ 400 MeV are studied, searching for a possible signature of nucleon-nucleon short-range correlations (SRCs) in the high-energy, high-momentum tails in the neutron spectra. The neutron spectra from the experimental datasets of Y. Iwata et al. [Phys. Rev. C 64, 054609 (2001)] are normalized to the data of R. Madey et al. [Phys. Rev. Lett. 55, 1453 (1985)] above the beam energy per nucleon, using a common reaction of ${}^{20}\mathrm{Ne}$ $+$ Pb at $E_{\mathrm{inc}}/A=400\mathrm{MeV}$ in both datasets, and compared with those of the Semirelativistic antisymmetrized molecular dynamics (SrAMD) with a three-nucleon collision (3NC) term. In the simulations, each nucleon is boosted with Fermi motion (Fermi-boost), and an empirical high-momentum tail (HMT) in the single-nucleon momentum distribution is incorporated, where HMT is closely related to SRCs. The normalized data of Iwata et al. are reasonably well reproduced, including the high-energy, high-momentum tails at forward angles. However, in overall reproduction, the experimental data with the C target are better reproduced with SrAMD-3NC with HMT in the 3NC process, whereas those with the Cu target are better reproduced without HMT. For the Pb target, the experimental data are well reproduced with SrAMD-3NC both with and without that HMT down to the calculated limit of 1 mb ${\mathrm{MeV}}^{-1}$ ${\mathrm{sr}}^{-1}$ with the available computing power. The dispersion of the three different SrAMD simulations becomes smaller as the system size increases. The essential feature of the prediction of SrAMD for the high-energy, high-momentum tails in the neutron spectra is robust and a possible cause for the origin of the different conclusions on the performance of the SrAMD-3NC with and without HMTs on the different targets is suggested to the quality of the experimental data and this prevents us from drawing a conclusive remark about the necessity of HMT in the single-nucleon momentum distribution in nuclei.

The $E1$ component of the $\gamma$-ray strength function of ${}^{72}\mathrm{Ga}$ nuclei has been constrained for the first time through a statistical Hauser-Feshbach analysis of the available capture data for the ${}^{71}\mathrm{Ga}(n,\gamma ){}^{72}\mathrm{Ga}$ reaction over the neutron energy range of 0.01–3 MeV. The analysis employs the nuclear level density (NLD) of ${}^{72}\mathrm{Ga}$ constrained by the work of Santra et al. [Phys. Rev. C 107, 064611 (2023)]. In the present analysis, the Gogny D1M $\mathrm{HFB}+\mathrm{QRPA}$ model is adopted for the $E1$ and $M1$ strength functions, including the low-energy upbend. The normalization of the Gogny D1M $\mathrm{HFB}+\mathrm{QRPA}$ model for the $E1$ component has been constrained in the present work, as a clear minimum is obtained. However, the upbend parameters are not constrained, as no well-defined chi-square (${\chi }^2$) minimum is found for these parameters within physically motivated bounds. The extracted $\gamma$-ray strength function of ${}^{72}\mathrm{Ga}$ is compared with experimental data for the neighboring nuclei ${}^{73,74}\mathrm{Ge}$, exhibiting similar trends. The constrained $\gamma$-ray strength function is then used to calculate the Maxwellian-averaged cross section (MACS) at $kT=30$ keV as a consistency check of the present analysis.

The cross-sections of the $(\gamma ,n)$ reaction of various Cd and Sn isotopes, including the $p$ nuclei ${}^{106,108}\mathrm{Cd}$ and ${}^{112,114}\mathrm{Sn}$, were measured using bremsstrahlung photons of 14 MeV on Cd and Sn targets. The thick-foil activation technique was applied, and the contribution from the $(n,\gamma )$ reaction channel was taken into account. The results are new, providing an effective cross-section for ${}^{106}\mathrm{Cd}(\gamma ,n)$ and ${}^{108}\mathrm{Cd}(\gamma ,n)$ reactions as $42\pm 7$ and $36\pm 5\mathrm{mb}$, respectively. The ${}^{112,114}\mathrm{Sn}(\gamma ,n)$ cross-sections were $34\pm 8$ and $44\pm 11\mathrm{mb}$, and the cross-sections of ${}^{118,124}\mathrm{Sn}(\gamma ,n)$ were measured as $1.1\pm 0.4$ and $42\pm 9\mathrm{mb}$, while the ${}^{114}\mathrm{Cd}(n,\gamma )$ cross-section was $58\pm 9\mathrm{mb}$. The experimental data were compared with talys 2.0 simulations to validate phenomenological and semimicroscopic models, as well as with evaluated data from major nuclear data libraries. The phenomenological SMLO $\gamma$ strength reproduced the experimental cross-sections reasonably well, while the semimicroscopic QRPA strength functions (BSk7, $\mathrm{Skyrme}+\mathrm{HFB}$, D1M) showed comparable predictive capability and, in several cases, a closer agreement with the evaluated data. The $\mathrm{QRPA}+\mathrm{D}1\mathrm{M}$ parametrization, including pion-resonance corrections, yielded the best reproduction of the experimental results, with cross-sections of $41\pm 5$ and $38\pm 5\mathrm{mb}$ for the ${}^{106}\mathrm{Cd}(\gamma ,n)$ and ${}^{108}\mathrm{Cd}(\gamma ,n)$ reactions, respectively. For the Sn isotopes, the calculated values were $38\pm 8\mathrm{mb}$ for ${}^{112}\mathrm{Sn}, 43\pm 7\mathrm{mb}$ for ${}^{114}\mathrm{Sn}$, and $42\pm 9\mathrm{mb}$ for ${}^{124}\mathrm{Sn}$, while for ${}^{118}\mathrm{Sn}$ the ${}^{118}\mathrm{Sn}(\gamma ,n){}^{117m}\mathrm{Sn}$ reaction was found to be much lower ($1.5\pm 0.4\mathrm{mb}$). Effective cross-sections for natural Cd and Sn were deduced as $41\pm 8$ and $43\pm 7\mathrm{mb}$, respectively, at a mean energy of $11\pm 5\mathrm{MeV}$ for ground-state transitions. For isomeric states, the measured cross-sections were about an order of magnitude lower. Overall, the combination of SMLO and D1M-QRPA strength functions with the constant temperature model level density model provides the most consistent description across $(\gamma ,n)$ and $(n,\gamma )$ channels.

The low-lying excitations in odd-odd ${}^{150}\mathrm{Pm}$ have been studied through proton-induced reaction on ${}^{150}\mathrm{Nd}$ with an array of five Compton-suppressed Clover HPGe detectors and one segmented planar Ge detector. The relative excitation functions for the observed $\gamma$ rays have been studied using singles data at two beam energies of 8 and 9 MeV. Sixteen new $\gamma$ rays and 15 new levels have been placed in the level scheme of ${}^{150}\mathrm{Pm}$ based on $\gamma \text{−}\gamma$ coincidence data. The relative intensities for the observed $\gamma$ rays have been determined using total and gated projections. Tentative spin-parity assignments were made for a few low-lying excitations of ${}^{150}\mathrm{Pm}$, using limited angular distribution data and other information. Lifetimes were estimated for two excited levels in this nucleus using generalized centroid difference analysis, applied in the nanosecond range, with Ge detectors. Large-basis shell-model and projected shell-model calculations were performed to interpret the experimentally observed levels. The present work indicates a $1^{-}$ ground state, a $2^{-}$ state close to the ground state $(\approx 50\mathrm{keV})$ and a low-lying $6^{-}$ isomeric state in this odd-odd nucleus along with emerging band structures developed with two quasiparticle configurations.

This work investigates one- and two-neutron transfer in the ${}^{96}\mathrm{Zr}+{}^{40}\mathrm{Ca}$ reaction at sub-barrier energies using a microscopic framework based on time-dependent covariant density functional theory (TD-CDFT). Pairing correlations are incorporated via the time-dependent BCS approximation, which is shown to significantly enhance pair transfer, as evidenced by an increased two-neutron transfer probability. The oblate deformation of ${}^{96}\mathrm{Zr}$ causes the transfer probabilities to vary by orders of magnitude with orientation; a direct comparison with experiment is enabled by averaging results over thirteen systematically chosen orientations. While the orientation-averaged one-neutron transfer probabilities agree well with data, the two-neutron channel is suppressed below the Coulomb barrier. This suppression is attributed to missing quantum fluctuations in the semiclassical TD-CDFT approach. To test this, we employ the generalized time-dependent generator coordinate method, which confirms that quantum fluctuations are essential for an accurate description of sub-barrier two-neutron transfer dynamics.

In this work, we investigate the anisotropic suppression of reconstructed $K^{*0}$ resonances arising from hadronic rescattering using A Multi-Phase Transport (AMPT) model for $\mathrm{Au}+\mathrm{Au}$ collisions at $\sqrt{s_{NN}}=200$ GeV. We demonstrate that the rescattering probability of the decay daughters depends strongly on the decay angle ${\theta }^{*}$ due to Lorentz boost effects, which lead to smaller laboratory-frame momenta for daughters emitted opposite to the parent particle motion. This anisotropic suppression influences several experimentally measured observables. We show that the reconstructed $K^{*0}$ yield exhibits a strong ${\theta }^{*}$ dependence. Furthermore, the anisotropic loss of resonances modifies the angular distributions used to extract the spin alignment parameter ${\rho }_{00}$ in the production-plane and helicity frames. Even in the absence of intrinsic polarization in the model, the reconstructed $K^{*0}$ sample shows deviations of ${\rho }_{00}$ from the unpolarized value of $1/3$, with opposite trends in the two reference frames. These results demonstrate that hadronic rescattering can generate apparent polarization signals and must be carefully considered in experimental measurements of vector-meson spin alignment using production plane and helicity frames.