⚛️ Category

nucl-ex

555 papers

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.

Probing Internal Conversion and Dark-Matter-Induced De-excitation of 180mTa with a gamma-ray TES Array

This paper proposes and evaluates a source-as-detector search using a gamma-ray transition-edge-sensor (TES) array to detect the de-excitation of the long-lived 180mTa^{180\mathrm{m}}\mathrm{Ta} isomer via internal conversion and dark-matter-induced processes, demonstrating that such a calorimetric approach with delayed-coincidence tagging can significantly surpass the sensitivity of conventional high-purity germanium detectors and probe unexplored dark-matter parameter spaces.

A. Gando, K. Ichimura, K. Ishidoshiro, T. Kikuchi, T. Kishimoto, A. Takeuchi, R. Sato, R. Smith2026-02-23⚛️ nucl-ex

Development and Application of an eV Neutron Polarization for Parity Violation Studies at CSNS Back-n Beamline

Researchers at the China Spallation Neutron Source successfully developed and validated an eV-range polarized neutron system using an in-situ 3^3He Spin-Exchange Optical Pumping filter and solenoidal guide field, achieving a measured parity violation asymmetry of 7.8±2.47.8 \pm 2.4% at the 0.747 eV resonance of 139^{139}La to support future Time-Reversal Invariance Violation studies.

Xu Qin, Tianhao Wang, Xuanbo Chen, Changdong Deng, Yongce Gong, Zenghang Huang, Wei Jiang, Zhengquan Liu, Guangyuan Luan, Haotian Luo, Qiuyue Luo, Yongjia Lv, You Lv, Nikolaos Vassilopoulos, Xichao Ru (…)2026-02-23⚛️ nucl-ex

Producing and Studying Rare Isotopes in e+Ae+A Collisions at the Electron-Ion Collider

This paper demonstrates that the Electron-Ion Collider offers a unique platform for nuclear spectroscopy by correlating rare-isotope production and de-excitation radiation with well-defined initial conditions through the study of event-by-event fluctuations in electron-nucleus collisions using the BeAGLE model.

Mark Ddamulira, Abhay Deshpande, Mark C. Harvey, Wenliang Li, Niseem Magdy, Brynna Moran, Pawel Nadel-Turonski, Charles Joseph Naim, Stacyann Nelson, Isaiah Richardson, Barak A. Schmookler, Oleg B. Ta (…)2026-02-23⚛️ nucl-ex

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

The RadioAxion experiment, conducted underground at Gran Sasso using a NaI detector to monitor the $59.5$ keV γ\gamma line from 241Am^{241}\mathrm{Am} α\alpha decay, found no evidence of periodic modulations indicative of axion dark matter and consequently established new constraints on the axion decay constant for masses between 10−2110^{-21} and 10−910^{-9} eV.

Carlo Broggini, Giuseppe Di Carlo, Luca Di Luzio, Denise Piatti, Claudio Toni2026-02-23⚛️ nucl-ex

An assay-based background projection for the MAJORANA DEMONSTRATOR using Monte Carlo Uncertainty Propagation

This paper presents a novel Bayesian analysis framework utilizing Monte Carlo uncertainty propagation to project the background index of the MAJORANA DEMONSTRATOR experiment, resulting in a calculated mean background index of [8.95±0.36]×10−4[8.95 \pm 0.36] \times 10^{-4} cts/(keV kg yr) from thorium and uranium contaminants.

I. J. Arnquist, F. T. Avignone, A. S. Barabash, C. J. Barton, K. H. Bhimani, E. Blalock, B. Bos, M. Busch, T. S. Caldwell, Y. -D. Chan, C. D. Christofferson, P. -H. Chu, M. L. Clark, C. Cuesta, J. A. (…)2026-02-20⚛️ nucl-ex

Bayesian and Monte Carlo approaches to estimating uncertainty for the measurement of the bound-state ββ decay of 205Tl81+^{205}\mathrm{Tl}^{81+}

This paper demonstrates that Bayesian and Monte Carlo methods provide comparable and robust estimates for the uncertainty in contaminant 205Pb81+^{205}\mathrm{Pb}^{81+} levels during the measurement of bound-state β\beta decay of 205Tl81+^{205}\mathrm{Tl}^{81+}, recommending their adoption for future experiments facing similar statistical fluctuations.

G. Leckenby, M. Trassinelli, R. J. Chen, R. S. Sidhu, J. Glorius, M. S. Sanjari, Yu. A. Litvinov, M. Bai, F. Bosch, C. Brandau, T. Dickel, I. Dillmann, D. Dmytriiev, T. Faestermann, O. Forstner, B. Fr (…)2026-02-20⚛️ nucl-ex

Long-range transverse momentum correlations and radial flow in Pb$-$Pb collisions at the LHC with ALICE

This ALICE study introduces the new observable v0(pT)v_{0}(p_\mathrm{T}) to measure long-range transverse momentum correlations in Pb-Pb collisions at 5.02 TeV, revealing mass-dependent flow patterns consistent with hydrodynamics and quark recombination while demonstrating its sensitivity to bulk viscosity and the equation of state for constraining the properties of strongly interacting matter.

ALICE Collaboration2026-02-20⚛️ hep-ex

Magneto-Thomson and transverse Thomson effects in an interacting hadron gas in the presence of an external magnetic field

This paper utilizes the relativistic Boltzmann transport equation within the relaxation time approximation to predict and estimate, for the first time, the emergence of magneto-Thomson and transverse Thomson effects in a hot and dense hadronic medium under external magnetic fields, thereby revealing new higher-order thermoelectric transport phenomena relevant to relativistic heavy-ion collisions.

Kamaljeet Singh, Kshitish Kumar Pradhan, Raghunath Sahoo2026-02-20⚛️ nucl-th