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.

Modern jet flavour tagging in hadronic Z decays with archived ALEPH data

This paper presents a reanalysis of archived ALEPH LEP data using modern deep learning-based jet flavour tagging techniques, which significantly improve the separation of b-, c-, and s-quark jets compared to legacy algorithms and demonstrate successful data calibration, thereby enabling more precise electroweak measurements and guiding future collider detector development.

Matteo M. Defranchis, Jacopo Fanini, Apranik Fatehi, Gerardo Ganis, Taj Gillin, Loukas Gouskos, Luka Lambrecht, Michele Selvaggi, Birgit Stapf2026-03-09⚛️ hep-ex

Long-lived Light Mediators in a Higgs Portal Model at the FCC-ee

This study evaluates the potential of the IDEA detector at the FCC-ee, alongside proposed dedicated LLP detectors like DELIGHT B, to detect long-lived particles arising from Higgs and B-meson decays within a Higgs portal model, finding that cylindrical configurations and DELIGHT B offer enhanced sensitivity against Standard Model backgrounds.

Biplob Bhattacherjee, Camellia Bose, Herbi K. Dreiner, Nivedita Ghosh, Shigeki Matsumoto, Rhitaja Sengupta2026-03-06⚛️ hep-ph

Constraints on new physics from decays of polarized Λb0Λ_b^0 baryons at the FCC-ee

This paper demonstrates that utilizing the unique polarization of Λb0\Lambda_b^0 baryons produced in Z0Z^0 decays at the FCC-ee, despite comparable statistical sensitivity to LHCb Upgrade II for individual observables, significantly improves constraints on the Wilson coefficients C9()C_{9^{(\prime)}} and C10()C_{10^{(\prime)}} through a broader set of accessible angular observables.

Anja Beck, Mero Elmarassy, Asher Sabbagh, Michal Kreps, Eluned Smith2026-03-06🔬 physics

The BUTTON-30 detector at Boulby

This paper describes the design and construction of the BUTTON-30, a 30-tonne hybrid detector installed 1.1 km underground at the Boulby Laboratory to evaluate the potential of simultaneous Cherenkov and scintillation light detection for neutrino interactions in a low-background environment.

J. Bae, M. Bergevin, E. P. Bernard, D. S. Bhattacharya, J. Boissevain, S. Boyd, K. Bridges, L. Capponi, J. Coleman, D. Costanzo, T. Cunniffe, S. A. Dazeley, M. V. Diwan, S. R. Durham, E. Ellingwood, A (…)2026-03-06🔬 physics

Measurements of differential charged-current cross sections on argon for electron neutrinos with final-state protons in MicroBooNE

The MicroBooNE collaboration presents the first single-differential electron-neutrino charged-current cross-section measurements on argon with final-state protons, reporting a total cross section of [4.1±0.3 (stat.)±1.1 (syst.)]×1039cm2/nucleon[4.1 \pm 0.3 \text{ (stat.)} \pm 1.1 \text{ (syst.)}] \times 10^{-39} \mathrm{cm}^{2}/\mathrm{nucleon} that shows good agreement with standard neutrino event generator predictions.

MicroBooNE collaboration, P. Abratenko, D. Andrade Aldana, L. Arellano, J. Asaadi, A. Ashkenazi, S. Balasubramanian, B. Baller, A. Barnard, G. Barr, D. Barrow, J. Barrow, V. Basque, J. Bateman, B. Beh (…)2026-03-06🔬 physics

Position-Sensitive Silicon Photomultiplier Array with Enhanced Position Reconstruction by means of a Deep Neural Network

This paper demonstrates that applying Deep Neural Networks to a 2x2 array of linearly-graded Silicon Photomultipliers significantly improves position resolution and linearity while increasing the number of resolvable pixels by a factor of 5.7 to 12.1 compared to traditional reconstruction methods.

Cyril Alispach, Fabio Acerbi, Hossein Arabi, Domenico della Volpe, Alberto Gola, Aramis Raiola, Habib Zaidi2026-03-06✓ Author reviewed 🔬 physics.ins-det

First measurement of the strong interaction scattering parameters for the Kd\mathbf{K^-d} and K+d\mathbf{K^+d} systems

This paper presents the first experimental measurement of the strong interaction scattering parameters for the Kd\rm K^-d and K+d\rm K^+d systems using femtoscopic correlation functions from Pb--Pb collisions at sNN=5.02\sqrt{s_{\rm NN}}=5.02 TeV recorded by ALICE, providing crucial benchmarks for low-energy chiral QCD dynamics.

ALICE Collaboration2026-03-06🔬 physics