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.

Transformer-Based Pulse Shape Discrimination in HPGe Detectors with Masked Autoencoder Pre-training

This paper demonstrates that transformer-based models, particularly when enhanced by masked autoencoder pre-training, outperform traditional gradient-boosted decision trees in pulse-shape discrimination and energy regression for HPGe detectors by leveraging full waveform data and significantly reducing the need for labeled training samples.

Marta Babicz, Saúl Alonso-Monsalve, Alain Fauquex, Laura Baudis2026-03-09⚛️ hep-ex

Latin American HECAP Physics Briefing Book 2025

This paper presents the updated 2025 Physics Briefing Book for the Latin American Strategy Forum for Research Infrastructure in High Energy, Cosmology, and Astroparticle Physics (LASF4RI-HECAP), which synthesizes 46 community white papers and symposium discussions to establish a long-term strategic roadmap across seven key scientific and technical working groups.

Mario A. Acero (U. del Atlántico - Colombia), Alexis A. Aguilar-Arevalo (UNAM - México), Belén Andrada (CNEA/CONICET/UNSAM - Argentina), Andrés Baquero Larriva (U. del Azuay - Ecuador), Mauro (…)2026-03-09⚛️ hep-ph

Proto-0: a prototype for validating key technologies of the DarkSide-20k experiment and beyond

This paper reports on the early operation and single-phase commissioning of Proto-0, a small-scale dual-phase argon TPC at INFN Naples designed to validate key technologies for the upcoming DarkSide-20k experiment, with a specific focus on measuring scintillation light yield using calibration sources.

Riccardo de Asmundis (for the DarkSide-20k Collaboration), Roberta Calabrese (for the DarkSide-20k Collaboration), Mauro Caravati (for the DarkSide-20k Collaboration), Giuliana Fiorillo (for the DarkS (…)2026-03-09🔬 physics

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

The ABC of RPV II: Classification of R-parity Violating Signatures from UDD Couplings and their Coverage at the LHC

This paper utilizes the CheckMATE 2 framework to analyze R-parity violating signatures from UDD couplings in the MSSM, revealing that while colored LSPs are well-constrained by current LHC data, electroweakino and slepton LSPs remain significantly under-covered due to a lack of targeted experimental searches.

Herbi K. Dreiner, Michael Hank, Yong Sheng Koay, Martin Schürmann, Rhitaja Sengupta, Apoorva Shah, Nadja Strobbe, Evelyn Thomson2026-03-06⚛️ hep-ph

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