Mon·Nov 25, 2024Monday·November 25, 2024

1. 01*

   Ab initio study of the beryllium isotopes ${}^7$Be to ${}^{12}$Be

   Shihang Shen🇩🇪 · Serdar Elhatisari🇹🇷 · Dean Lee🇺🇸 · Ulf-G. Meißner🇩🇪 · Zhengxue Ren🇩🇪

   We present a systematic ab initio study of the low-lying states in beryllium isotopes from 7Be to 12Be using nuclear lattice effective field theory with the N3LO interaction. Our calculations achieve good agreement with experimental data for energies, radii, and electromagnetic properties. We introduce a novel, model-independent method to quantify nuclear shapes, uncovering a distinct pattern in the interplay between positive and negative parity states across the isotopic chain. By combining Monte Carlo sampling of the many-body density operator with a novel nucleon-grouping algorithm, the prominent two-center cluster structures, the emergence of one-neutron halo, complex nuclear molecular dynamics such as {\pi} orbital and {\sigma} orbital, emerge naturally.

   ↳ nucl-thastro-ph.COhep-phnucl-exPRL(2025)·52 citations
2. 02*

   Study of collective phenomena via the production of heavy quarks and quarkonia in hadronic collisions

   Victor Valencia Torres (on behalf of ALICE collaboration)🇫🇷

   Open heavy flavor and quarkonia have long been identified as ideal probes for understanding the quark-gluon plasma (QGP). Heavy quarks are produced in the early stage of the heavy-ion collisions. Therefore they experience the evolution of the medium produced, providing an important tool to investigate the properties of the QGP. In particular, the magnitude of the elliptic flow measured at the LHC is interpreted as a signature of the charm-quark thermalization in the QGP. This is reflected in the azimuthal anisotropies of the final particles. In addition, the observation of collective-like effects in high-multiplicity pp and p--Pb collisions provides new insights on the evolution of QGP-related observables going from large to small collision systems. A better understanding of heavy-quark energy loss, quarkonium dissociation, and production mechanism can therefore be obtained with those system-size dependent observables. We present recent results of the $\mathrm{J}/\psi$ and open heavy-flavor hadrons flow in pp, p--Pb, and Pb--Pb collisions carried out by the ALICE collaboration.

   ↳ hep-exhep-phnucl-exPoS(2025)·1 citation

* 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.