Nucl-Ex represents the dynamic frontier where scientists probe the fundamental building blocks of matter through high-energy experiments. By smashing particles together at incredible speeds or observing rare cosmic events, researchers uncover the forces that govern our universe and test the limits of our current understanding of physics.

At Gist.Science, we ensure these breakthroughs reach a broader audience by processing every new preprint in this field directly from arXiv. For each study, we provide both a clear, plain-language explanation of the core discoveries and a detailed technical summary for those seeking deeper insights. Below are the latest papers in nuclear experiment research, curated to help you stay informed on the latest developments from the lab.

Isotopic fission yields of 240{}^{240}Pu as a function of the excitation energy

This paper presents complete isotopic fission yield distributions of 240^{240}Pu measured as a function of excitation energy (8.2–11.9 MeV), revealing that increasing excitation energy dampens shell effects in the symmetry valley and reduces neutron content specifically in heavy fragments while leaving light fragments unaffected.

D. Ramos, M. Caamaño, F. Farget, C. Rodríguez-Tajes, A. Lemasson, M. Rejmund, C. Schmitt, E. Clement, L. Audouin, J. Benlliure, E. Casarejos, D. Cortina, D. Doré, B. Fernández-Domínguez, G. de France (…)2026-05-27⚛️ nucl-ex

Study of nuclear effects on charm production in light-ion collisions

This LHCb study of D0D^0 meson production in NeNe and OO collisions at 5.36 TeV reveals a transverse momentum-dependent variation inconsistent with nuclear structure modifications alone, providing evidence for the onset of quark-gluon plasma formation in light-ion collisions.

LHCb collaboration, R. Aaij, M. Abdelfatah, A. S. W. Abdelmotteleb, C. Abellan Beteta, F. Abudinén, T. Ackernley, A. A. Adefisoye, B. Adeva, M. Adinolfi, P. Adlarson, C. Agapopoulou, C. A. Aidala, S. (…)2026-05-27⚛️ nucl-ex

RadioAxion results on the search for axion dark matter under Gran Sasso

The RadioAxion experiment, conducted underground at the Gran Sasso Laboratory using a NaI detector to monitor the 59.5 keV gamma line of 241^{241}Am alpha decay, reports no evidence of periodic modulations indicative of axion dark matter and consequently establishes new constraints on the axion decay constant for masses between 102110^{-21} and 10910^{-9} eV.

Carlo Broggini, Giuseppe Di Carlo, Luca Di Luzio, Denise Piatti, Claudio Toni2026-05-25⚛️ nucl-ex

Assessment of the Imaging Performance of the CITIUS High-Resolution Detector for Heavy Charged Particles and Neutrons

This paper demonstrates that the CITIUS high-speed X-ray detector, originally developed for synchrotron radiation, effectively images heavy charged particles and neutrons with significantly improved spatial resolution by leveraging its gain-selecting architecture and long carrier drift distance to manage charge diffusion.

Yoshio Kamiya, Haruki Nishino, Takaki Hatsui2026-05-25⚛️ nucl-ex

A ground state 22^{22}Al halo is unlikely

Through the first observation of a weak β\beta-delayed α\alpha transition using high-quality beams at FRIB, researchers determined that the 22^{22}Al ground state has 4+4^+ spin and parity, which prevents proton halo formation due to a dominant dd-wave centrifugal barrier despite its low proton separation energy.

E. A. M. Jensen, J. S. Nielsen, B. S. O. Johansson, A. Adams, J. Dopfer, C. S. Sumithrarachchi, L. J. Sun, L. E. Weghorn, T. Wheeler, C. Wrede, M. J. G. Borge, O. Tengblad, M. Madurga, B. Jonson, K. R (…)2026-05-22⚛️ nucl-ex

Study of the thermodynamic properties of hot QCD matter with the CMS experiment

This paper presents recent CMS measurements at the LHC that extract the squared speed of sound of hot QCD matter from ultra-central PbPb collisions, yielding a value of cs2=0.241±0.002(stat)±0.016(syst)c_s^2 = 0.241 \pm 0.002\, (\mathrm{stat}) \pm 0.016\, (\mathrm{syst}) at Teff219MeVT_{\mathrm{eff}} \approx 219\,\mathrm{MeV} which aligns well with lattice-QCD predictions, alongside complementary studies in pPb collisions to probe quark-gluon plasma signatures in smaller systems.

Cesar A. Bernardes2026-05-21⚛️ hep-ex