Hep-Ex explores the fascinating intersection where particle physics meets experimental reality. This field investigates how scientists build massive detectors and accelerate particles to test the fundamental laws of nature, turning abstract theories into measurable data. It is the rigorous process of searching for new particles or forces that could reshape our understanding of the universe, often requiring years of collaboration and engineering.

At Gist.Science, we ensure these discoveries become accessible to everyone. We process every new preprint in this category directly from arXiv, generating both plain-language explanations for curious readers and detailed technical summaries for specialists. Our goal is to bridge the gap between complex experimental results and public understanding without losing scientific nuance.

Below are the latest papers in Hep-Ex, freshly summarized and ready for you to explore.

⚛️ high-energy experiments

First observation of the ηc→Ξ0Ξˉ0η_{c}\toΞ^{0} \barΞ^{0} decay

Using a sample of approximately one billion J/ψJ/\psi events collected by the BESIII detector, this paper reports the first observation of the ηc→K0Kˉ0\eta_c \to K^0 \bar{K}^0 decay and provides its measured branching fractions considering both constructive and destructive interference scenarios.

BESIII Collaboration, M. Ablikim, M. N. Achasov, P. Adlarson, X. C. Ai, C. S. Akondi, R. Aliberti, A. Amoroso, Q. An, Y. (…)2026-02-11
⚛️ high-energy experiments

First Indication of Solar 8^8B Neutrinos via Coherent Elastic Neutrino-Nucleus Scattering with XENONnT

The XENONnT experiment has reported the first measurement of nuclear recoils from solar 8^8B neutrinos using coherent elastic neutrino-nucleus scattering, providing a solar neutrino flux and cross section consistent with Standard Model predictions.

E. Aprile, J. Aalbers, K. Abe, S. Ahmed Maouloud, L. Althueser, B. Andrieu, E. Angelino, D. Antón Martin, F. Arneodo, L. (…)2026-02-10
⚛️ high-energy experiments

Fabrication and characterization of AlMn alloy superconducting films for 0vbb experiments

This paper investigates the fabrication and characterization of AlMn alloy superconducting films, demonstrating that their critical temperature can be tuned to the 10–20 mK range through annealing and studying its sensitivity to magnetic fields, which is essential for developing transition edge sensors (TES) for next-generation neutrinoless double-beta decay experiments.

Zhouhui Liu, Yifei Zhang, Yu Xu, Mengxian Zhang, Qing Yu, Xufang Li, He Gao, Zhengwei Li, Daikang Yan, Shibo Shu, Yongji (…)2026-02-10
⚛️ high-energy experiments

Assessing the Impact of Fitting Methodology at aN3^3LO with FPPDF: an Open Source Tool for Extracting Parton Distribution Functions in the Hessian Approach

The paper introduces FPPDF, a new open-source tool that implements the MSHT collaboration's polynomial parameterization and Hessian error approach using NNPDF's theoretical and experimental libraries, ultimately demonstrating that the impact of moving to aN3^3LO perturbative orders is largely independent of the chosen PDF parameterization methodology.

J. M. Cruz-Martinez, T. Giani, L. A. Harland-Lang2026-02-10