Thu·Dec 11, 2025Thursday·December 11, 2025

1. 01*

   Search for the Strange Dibaryons with Baryon Correlations in Isobar Collisions at STAR

   Kehao Zhang (for the STAR Collaboration)🇨🇳

   Dibaryons provide insight into the strong interaction beyond conventional hadrons. Strange dibaryons, containing strange quarks, are especially valuable for probing hyperon-nucleon (YN) and hyperon-hyperon (YY) interactions. We report measurements of $p$-${\Xi }^{-}$ and $p$-${\Omega }^{-}$ correlation functions in Ru+Ru and Zr+Zr collisions at $\sqrt{s_{NN}}=200$ GeV. The analysis, using the Lednicky-Lyuboshitz formalism, yields scattering parameters that offer key implications for the possible formation of strange dibaryon bound states, particularly $H$ ($S=-2$) and $N\Omega$ ($S=-3$).

   nucl-exhep-exEPJ Web Conf.(2026)·2 citations
2. 02*

   Hadron Emission and Stopping in Heavy-Ion Collisions: Baryon-Rich Matter to Meson-Dominated Matter

   Manuel Lorenz🇩🇪 · Christoph Blume🇩🇪

   Today's accelerator facilities used for studies of relativistic heavy-ion collisions cover an energy range spanning over three orders of magnitude, from a few GeV up to a few TeV in center-of-mass energy per nucleon pair ($\sqrt{s_{NN}}$). We present a systematic overview of hadron emission in heavy-ion collisions across this entire energy range. The presented energy excitation functions of the approximated baryon and meson yields at mid-rapidity reflect the interplay between baryon stopping and particle production, both of which evolve continuously with increasing energy. At low energies (e.g., SIS18, AGS), strong nuclear stopping leads to high net-baryon densities at mid-rapidity and to the abundant formation of nuclear clusters. With increasing $\sqrt{s_{NN}}$, the relative baryon stopping power $⟨\delta y⟩/y_p$ decreases, and meson production becomes dominant. The inelasticity, i.e. the fraction of the initial kinetic energy available converted in inelastic reactions into particle production and dynamics, is found to rise rapidly at low energies and then levels off at values around $0.7-0.8$. While at low energies up to $\sim 10$~GeV this available energy seems to be shared by equal amount between the production of new particles and the dynamics of the system, as well as radiation, the latter part starts to dominates at higher energies.

   nucl-exhep-ex0 citations
3. 03*

   Exploring Stars in Underground Laboratories: Challenges and Solutions

   Marialuisa Aliotta · Axel Boeltzig🇩🇪 · Rosanna Depalo🇮🇹 · György Gyürky

   For millennia, mankind has been fascinated by the marvel of the starry night sky. Yet, a proper scientific understanding of how stars form, shine, and die is a relatively recent achievement, made possible by the interplay of different disciplines as well as by significant technological, theoretical, and observational progress. We now know that stars are sustained by nuclear fusion reactions and are the furnaces where all chemical elements continue to be forged out of primordial hydrogen and helium. Studying these reactions in terrestrial laboratories presents serious challenges and often requires developing ingenious instrumentation and detection techniques. Here, we reveal how some of the major breakthroughs in our quest to unveil the inner workings of stars have come from the most unexpected of places: deep underground. As we celebrate 30 years of activity at the first underground laboratory for nuclear astrophysics, LUNA, we review some of the key milestones and anticipate future opportunities for further advances both at LUNA and at other underground laboratories worldwide.

   nucl-exVol. 72 (2022) 177-204·15 citations
4. 04*

   Insights into Nucleon Resonances via Continuum Schwinger Function Methods

   Peng Cheng🇨🇳 · Langtian Liu🇨🇳 · Ya Lu🇨🇳 · Craig D. Roberts🇨🇳

   The first baryon resonance was discovered in the early 1950s. The Roper resonance joined the collection ten years later. Today, many baryon resonances are known and more are being discovered. As baryons, these states are the most fundamental three-body systems in Nature. They must all be understood, not just the isolated ground state nucleon. This contribution sketches applications of continuum Schwinger function methods to the baryon resonance problem. Whilst spectroscopy is of value, particular emphasis is placed on resonance electroproduction because transition form factors extracted from electroproduction data provide a keen tool for revealing resonance structure.

   ↳ hep-phhep-exhep-latnucl-ex+1Acta Phys.Polon.B(2026)·3 citations
5. 05*

   Isotope Production in Fusion Systems

   J. F. Parisi · J. A. Schwartz🇺🇸 · S. E. Wurzel · A. Rutkowski · J. Harter

   Fusion systems producing isotopes via neutron-driven transmutation can achieve economic viability well before reaching energy breakeven. Incorporating carefully selected feedstock materials in a blanket allows fusion systems to generate both electrical power and high-value isotopes, expanding the space of viable concepts, significantly enhancing the economic value of fusion energy, and supporting an accelerated path to adoption. We calculate the value of this co-generation and derive a new economic breakeven condition based on net present value. At lower plasma gain, $Q_{\mathrm{plas}}\lesssim 1$, high-value transmutation, such as medical radioisotopes, enables pure transmuter fusion systems operating at only watts to megawatts of fusion power: for example, a 3 megawatt system transmuting ${}^{102}\mathrm{Ru}\to {}^{99}\mathrm{Mo}$ could fulfill global ${}^{99}\mathrm{Mo}$ demand with $Q_{\mathrm{plas}}\ll 1$. At higher gain $Q_{\mathrm{plas}}\gtrsim 3$, it becomes viable to generate electricity in addition to isotopes. For example, co-production of electricity and gold, transmuted from mercury in a fusion blanket, can reduce the required plasma gain for economic viability from $Q_{\mathrm{plas}}\sim 10$-$100$ to $Q_{\mathrm{plas}}\sim 3$-$5$. We further highlight techniques to enhance transmutation with asymmetric neutron wall loading. Fusion neutron-driven transmutation therefore offers a revenue-positive pathway for deploying fusion energy at terawatt-scale, starting from smaller watt-to-megawatt-scale machines for radioisotope production and then scaling up to co-producing electricity and gold in larger fusion power plants.

   ↳ physics.plasm-phnucl-ex1 citation
6. 06*

   Determination of nuclear deformations with an emulator for sub-barrier fusion reactions

   Zehong Liao · K. Hagino🇯🇵 · Long Zhu🇨🇳 · S. Yoshida🇯🇵 · K. Uzawa

   Based on the eigenvector continuation, which is mathematically an instance of the reduced basis method (RBM), we construct an emulator for coupled-channels calculations for heavy-ion fusion reactions at energies around the Coulomb barrier. We apply this to the ${}^{16}$O+${}^{144,154}$Sm, ${}^{186}$W reactions and examine whether the emulator can be used to extract the deformation parameters of the target nuclei. We show that the emulator not only accelerates the calculations but also has an ability to accurately extract the nuclear shapes. This indicates that the emulator provides a powerful tool to systematically explore intrinsic shapes of atomic nuclei, enhancing our understanding of the fundamental properties of nuclear systems.

   ↳ nucl-thnucl-exPRC(2026)·1 citation
7. 07*

   Scintillation response of cryogenic CsI to few-keV and sub-keV nuclear recoils

   J.I. Collar🇺🇸 · C.M. Lewis🇺🇸 · A. Simón🇪🇸 · S.G. Yoon🇺🇸

   Monochromatic neutron emissions from photonuclear sources ${}^{88}$Y/Be and ${}^{124}$Sb/Be are employed to obtain the response of pure (undoped) cesium iodide at 80 K. The use of a low-noise, high-quantum-efficiency avalanche photodiode in combination with a novel waveshifter results in a 70 eV analysis threshold. This reach allows to observe signals from sub-keV nuclear recoils originating in neutron scattering. The extracted quenching factor drops much faster towards low energy than the extrapolation of a model developed for room-temperature CsI[Na]. We comment on the impact of our measurement on planned use of cryogenic CsI in neutrino physics and dark matter experiments.

   ↳ physics.ins-dethep-exhep-phnucl-ex2 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.