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.

⚛️ nuclear experiments

Triaxial shapes and the angular structure of nuclear three-body correlations

This paper establishes an analytical connection between triaxial nuclear shapes and three-particle correlations in relativistic heavy-ion collisions, demonstrating that specific flow and momentum fluctuation observables are directly proportional to the nuclear triaxiality parameter β23cos⁡(3γ)\beta_2^3 \cos(3\gamma).

Hadi Mehrabpour, Giuliano Giacalone, Matthew W. Luzum2026-04-02
⚛️ high-energy experiments

Joint LHCb--Belle II Prospects to Constrain New Physics in B→D(∗)τνB\to D^{(*)}\tau\nu

This paper presents a first sensitivity study demonstrating that a simultaneous joint fit of LHCb and Belle II data for B→D(∗)τνB\to D^{(*)}\tau\nu decays, utilizing event-by-event reweighting to handle non-SM biases and shared form-factor parameters, significantly reduces model-induced biases and improves constraints on New Physics Wilson coefficients compared to independent analyses.

Johannes Albrecht, Florian Bernlochner, Marco Colonna, Lorenz Gärtner, Abhijit Mathad, Biljana Mitreska, Markus Prim, Il (…)2026-04-02
⚛️ high-energy experiments

Potassium-40 geoneutrinos detection and the Earth's large-scale structures imaging by directional geoneutrino detection

This paper investigates a directional geoneutrino detection method using a Cherenkov liquid scintillator to identify Potassium-40 neutrinos and image the Earth's large-scale internal structures, demonstrating that an exposure of 2.8 kiloton-years is sufficient for a 3-sigma discovery of potassium neutrinos and 10.6 kiloton-years to reject a uniform geoneutrino distribution.

Haozhe Sun, Zhe Wang, Shaomin Chen2026-04-02
⚛️ high-energy experiments

Sensitivity study of Kˉ1(1270)\bar{K}_1(1270) decay dynamics using four D→Kˉ1(1270)(→Kˉππ)e+νD\to \bar{K}_1(1270)(\to \bar K\pi\pi)e^+\nu decay channels

This paper presents a sensitivity study using the BESIII experiment to propose a model-independent method for determining the branching fraction of Kˉ1(1270)\bar{K}_1(1270) decays into three-body final states by simultaneously analyzing four specific semileptonic DD-meson decay channels.

Ying'ao Tang, Liang Sun, Panting Ge, Menghao Wang2026-04-02
⚛️ high-energy experiments

Blobel's Regularized Unfolding: Eigenmode Decomposition and Automatic Smoothing for Inverse Problems in Particle Physics

This paper presents a self-contained treatment of Blobel's Regularized Unfolding (BRU), a method that models true distributions using cubic B-splines and employs eigenmode decomposition for automatic regularization strength determination, offering a distinct alternative to conventional histogram-based approaches like Tikhonov regularization and Richardson-Lucy iteration.

Vincent Alexander Croft2026-04-02
⚛️ high-energy experiments

Cosmogenic Neutron Production in Water at SNO+

The SNO+ collaboration measured a cosmogenic neutron yield in ultra-pure water at high muon energies, finding agreement with FLUKA simulations over GEANT4 and revealing a lower yield than in heavy water, which underscores the critical influence of target material composition on neutron production for future underground experiments.

SNO+ Collaboration, :, M. Abreu, A. Allega, M. R. Anderson, S. Andringa, D. M. Asner, D. J. Auty, A. Bacon, T. Baltazar (…)2026-04-01
⚛️ high-energy experiments

Generalizable Foundation Models for Calorimetry via Mixtures-of-Experts and Parameter Efficient Fine Tuning

This paper introduces a generalizable foundation model for calorimetry that leverages next-token transformer architectures combined with Mixture-of-Experts pre-training and parameter-efficient fine-tuning to enable modular, scalable, and computationally efficient simulation of particle showers across diverse materials and detector configurations without catastrophic forgetting.

Carlos Cardona-Giraldo, Cristiano Fanelli, James Giroux, Cole Granger, Benjamin Nachman, Gerald Sabin2026-04-01