Tue·Jan 28, 2025Tuesday·January 28, 2025

1. 01*

   Observing short-range correlations in nuclei through ${\rho }^0$ photo-production

   Phoebe Sharp🇺🇸 · Axel Schmidt🇺🇸

   Short-range correlations (SRCs) are a universal feature of nuclear structure. A wide range of measurements, primarily using electron scattering, have revealed SRC properties, such as their abundance in different nuclei, as well as the strong preference for proton-neutron pairing over proton-proton or neutron-neutron pairing. Despite the inherent complexity of many-body systems, a number of the salient features of electron scattering measurements are described by a simple, factorized theory called Generalized Contact Formalism. A key element of this theory, the factorization of the interaction with a hard probe, has yet to be tested. An experiment conducted at Jefferson Lab in 2021 collected data from scattering a tagged photon beam, with an energy up to 10 GeV, from several nuclear targets, measuring final state particles in the large-acceptance GlueX spectrometer. In this paper, we propose a test of probe factorization by measuring cross section ratios sensitive to proton-proton pair prevalence and relative SRC abundances in ${}^4$He and ${}^{12}$C. We present GCF predictions of the observables and make projections of the expected precision the experiment can achieve.

   ↳ nucl-thnucl-exEPJA(2025)·2 citations
2. 02*

   A hitchhiker's guide to nuclear polarization in muonic atoms

   Mikhail Gorchtein🇩🇪

   I consider the so-called nuclear polarization correction to the 1S-levels in light to intermediate muonic atoms. An easy to use recipe to compute it is given. The calculation includes the effect of the nucleon polarization, i.e. the contribution from inelastic states in the hadronic range, and Coulomb corrections beyond the leading logarithm approximation to both nuclear and nucleon polarization. I provide numerical estimates for $4\le Z\le 41$, compare to the estimates in the literature and discuss the need for future improvements.

   ↳ nucl-thnucl-exphysics.atom-phPRC(2026)·12 citations
3. 03*

   Investigating the pion emission source in pp collisions using the AMPT model with sub-nucleon structure

   Dong-Fang Wang🇨🇳 · Mei-Yi Chen🇨🇳 · Yu-Gang Ma🇨🇳 · Qi-Ye Shou🇨🇳 · Song Zhang🇨🇳 · Liang Zheng🇨🇳

   The measurement of momentum correlations of identical pions serves as a fundamental tool for probing the space-time properties of the particle emitting source created in high-energy collisions. Recent experimental results have shown that, in pp collisions, the size of the one-dimensional primordial source depends on the transverse mass (\mt) of hadron pairs, following a common scaling behavior, similar to that observed in Pb--Pb collisions. In this work, a systematic study of the \pipi source function and correlation function is performed using the multiphase transport model (AMPT) to understand the properties of the emitting source created in high multiplicity pp collisions at $\sqrt{s}=13$ TeV. The \mt scaling behavior and pion emission source radii measured by ALICE experiment can be well described the model with sub-nucleon structure. These studies shed new light on the understanding of the effective size of the \pipi emission source and on studying the intensity interferometry in small systems with a transport model.

   ↳ nucl-thnucl-exNucl.Sci.Tech.(2025)·7 citations
4. 04*

   Cluster configurations in Li isotopes in the variation of multi-bases of the antisymmetrized molecular dynamics

   Takayuki Myo🇯🇵 · Mengjiao Lyu🇨🇳 · Qing Zhao🇨🇳 · Masahiro Isaka🇯🇵 · Niu Wan🇨🇳 · Hiroki Takemoto🇯🇵 · Hisashi Horiuchi🇯🇵 · Akinobu Dote🇯🇵

   We investigate the cluster configurations in Li isotopes, which are described in the optimization of the multi-Slater determinants of the antisymmetrized molecular dynamics. Each Slater determinant in the superposition is determined simultaneously in the variation of the total energy. The configurations of the excited states are obtained by imposing the orthogonal condition to the ground-state configurations. In Li isotopes, various cluster configurations are confirmed and are related to the thresholds of the corresponding cluster emissions. For ${}^5$Li, we predict the ${}^3$He+$d$ clustering in the excited state as well as the mirror state of ${}^5$He with ${}^3$H+$d$. For ${}^{6-9}$Li, various combinations of the clusters are obtained in the ground and excited states, and the superposition of these basis states reproduces the observed energy spectra. For ${}^9$Li, we predict the linear-chain states consisting of various cluster configurations at 10--13 MeV of the excitation energy.

   ↳ nucl-thnucl-exPTEP(2025)·10 citations
5. 05*

   Imaging nuclei by smashing them at high energies: how are their shapes revealed after destruction?

   Jiangyong Jia🇺🇸

   High-energy nuclear collisions have recently emerged as a promising ``imaging-by-smashing'' approach that may reveal the intrinsic shapes of atomic nuclei. Here, I outline a conceptual framework for this technique, explaining how nuclear shapes are encoded during quark-gluon plasma formation and evolution, and how they can be decoded from final-state particle distributions. I highlight the method's potential to advance our understanding of both nuclear structure and quark-gluon plasma physics.

   ↳ nucl-thhep-phnucl-exphysics.atm-clus+1Rept.Prog.Phys.(2025)·14 citations
6. 06*

   Laser cooled 137BaF molecules for measuring nuclear-spin-dependent parity violation

   Felix Kogel · Tatsam Garg · Marian Rockenhäuser · Tim Langen

   We demonstrate optical cycling and transverse laser cooling of a beam of fermionic 137BaF molecules. Their high masses and nuclear spins make these molecules sensitive probes for parity violation and properties of the weak interaction. However, the nuclear spins also lead to a quasi-closed cycling transition currently involving up to 112 levels, which significantly exceeds the complexity in other laser-cooled molecules. Optical cycling and cooling are facilitated through carefully designed optical spectra tailored to this molecular structure. Our results pave the way for efficient state preparation, detection, and cooling in precision measurements using this species and other similar species.

   ↳ physics.atom-phcond-mat.quant-gasnucl-exPRResearch(2025)·5 citations
7. 07*

   Relativistic chiral nuclear forces: status and prospects

   Jun-Xu Lu🇨🇳 · Yang Xiao🇨🇳 · Zhi-Wei Liu🇨🇳 · Li-Sheng Geng🇨🇳

   Understanding nuclear structure, reactions, and the properties of neutron stars from \textit{ab initio} calculations from the nucleon degrees of freedom has always been a primary goal of nuclear physics, in which the microscopic nuclear force serves as the fundamental input. So far, the Weinberg chiral nuclear force, first proposed by the Nobel laureate Weinberg, has become the \textit{de facto} standard input for nuclear \textit{ab initio} studies. However, compared to their non-relativistic counterparts, relativistic \textit{ab initio} calculations, which describe better nuclear observables, have only begun. The lack of modern relativistic nucleon-nucleon interactions is an important issue restricting their development. In this work, we briefly review the development and status of the Weinberg chiral nuclear force, as well as its limitations. We further present a concise introduction to the relativistic chiral nuclear force, show its description of the scattering phase shifts and observables such as differential cross sections, and demonstrate its unique features. Additionally, we show that the relativistic framework could be naturally extended to the antinucleon-nucleon interaction.

   ↳ nucl-thhep-lathep-phnucl-exIJMPE(2025)·10 citations

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.