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

Enhanced evidence of X(7200)X(7200) and improved measurements of X(6900)X(6900) parameters from a combined LHCb-ATLAS-CMS analysis

This paper presents a combined analysis of LHCb, ATLAS, and CMS data that confirms the X(6900)X(6900) resonance with overwhelming significance and provides substantially strengthened evidence for the X(7200)X(7200) state, highlighting the critical role of interference effects in fully-charmed tetraquark spectroscopy.

Yuan Wang, Ran Li, Bin Zhong, Yaqian Wang2026-04-21
⚛️ high-energy experiments

Latest results from the IceCube Neutrino Observatory

This paper presents recent results from the IceCube Neutrino Observatory, including the follow-up on the steady neutrino source NGC 1068, measurements of flavor composition and prompt atmospheric neutrino limits, and dark matter searches, while outlining future prospects with the IceCube Upgrade and IceCube-Gen2 to advance high-energy astrophysics and particle physics.

Thijs Juan van Eeden (for the IceCube Collaboration)2026-04-21
⚛️ high-energy experiments

Optomechanical Detection of Individual Gas Collisions

This paper experimentally demonstrates the detection of momentum transfers from individual gas collisions with an optically levitated nanoparticle, validating theoretical models and establishing a proof-of-principle for primary pressure sensors and precision measurements of fundamental particle interactions.

Yu-Han Tseng, Clarke A. Hardy, T. W. Penny, Cecily Lowe, Jacqueline Baeza-Rubio, Daniel Carney, David C. Moore2026-04-21
⚛️ high-energy experiments

Positron Transport System for Muonium-to-Antimuonium Conversion Experiment

This paper presents the design and simulation results of a positron transport system for the Muonium-to-Antimuonium Conversion Experiment (MACE), demonstrating high geometric acceptance, precise position resolution, and a time-of-flight capability that enables a 10710^{-7} rejection factor for internal conversion backgrounds to facilitate the search for charged lepton flavor violation.

Guihao Lu, Shihan Zhao, Siyuan Chen, Jian Tang2026-04-20
⚛️ phenomenology

Theoretical modeling of charged current νμ(νˉμ)40Ar\nu_\mu(\bar\nu_\mu)-^{40}Ar DIS at DUNE energies

This paper presents a theoretical study of charged current νμ(νˉμ)\nu_\mu(\bar{\nu}_\mu)-induced deep inelastic scattering on 40Ar^{40}\mathrm{Ar} at DUNE-relevant energies, utilizing a microscopic framework with nuclear medium effects and NNLO QCD corrections to compute nuclear structure functions and differential cross sections.

F. Zaidi, S. Akther, M. Sajjad Athar, S. K. Singh2026-04-20
⚛️ lattice

Comprehensive analyses of rare ΛbΛ+ \Lambda_b \rightarrow \Lambda \ell^+ \ell^-, ΣbΣ+\Sigma_b \rightarrow \Sigma \ell^+ \ell^- and ΞbΞ+\Xi_b \rightarrow \Xi \ell^+ \ell^- decays in 2HDM

This paper investigates rare dileptonic decays of Λb\Lambda_b, Σb\Sigma_b, and Ξb\Xi_b baryons within the Type III Two-Higgs-Doublet Model, calculating key observables like branching ratios and forward-backward asymmetries using light-cone QCD form factors to compare predictions against Standard Model results and assess the model's viability for future experimental verification at LHCb and Belle II.

Z. Tavukoğlu, A. T. Olgun, K. Azizi2026-04-20
⚛️ nuclear experiments

Isospin-symmetry violation -- kaons and beyond (ISO-BREAK 25: summary and outlook)

This paper summarizes the ISO-BREAK 25 workshop held in Kielce in October 2025, which reviewed the current status of isospin-symmetry breaking observed by NA61/SHINE in nucleus-nucleus collisions, discussed its confirmation by other experiments, and outlined future experimental and theoretical priorities to explain this phenomenon.

Marek Gazdzicki (Jan Kochanowski University, Kielce, Poland), Francesco Giacosa (Jan Kochanowski University, Kielce, Pol (…)2026-04-20