⚛️ Category

hep-ex

2092 papers

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

Combination of Higgs boson measurements at s=\sqrt{s} = 13 TeV and their interpretations by the ATLAS experiment

The ATLAS experiment presents a comprehensive combination of Higgs boson production and decay measurements using up to 140 fb−1^{-1} of 13 TeV proton-proton collision data, yielding precise determinations of the inclusive event rate, coupling modifiers, the bb-quark running mass, and the total Higgs width, while also probing kinematic distributions within the Standard Model Effective Field Theory framework.

ATLAS Collaboration2026-08-10
⚛️ high-energy experiments

Search for resonant production of lepton-enriched semivisible jets in proton-proton collisions at s\sqrt{s} = 13 TeV

Using 138 fb−1^{-1} of 13 TeV proton-proton collision data, the CMS collaboration performed the first search for resonant lepton-enriched semivisible jets, employing a dual machine-learning strategy to exclude mediator masses up to 4.7 TeV in the all-lepton scenario and between 1.8 and 3.5 TeV in the tau-enriched scenario.

CMS Collaboration2026-08-07
⚛️ nuclear theory

Photon-nucleon entanglement in Compton scattering at low and high energies

This paper investigates spin-spin entanglement in Compton scattering across low and high energy regimes, establishing a no-go theorem for real amplitudes in unpolarized scattering and demonstrating that polarized scattering off nucleons produces diverse maximally entangled states sensitive to electromagnetic polarizabilities, thereby proposing entanglement as a novel probe for nucleon structure.

Yoshitaka Hatta, Víctor Martínez-Fernández2026-08-07
⚛️ nuclear experiments

ePIC Early Science Report

This Early Science Report from the ePIC Collaboration demonstrates that the Electron-Ion Collider's initial years of operation, utilizing realistic beam configurations and detailed detector simulations, will deliver world-leading insights into Quantum Chromodynamics by addressing core scientific pillars such as nucleon mass origin, spin structure, and dense gluonic matter, while simultaneously establishing methodologies for the full physics program.

D. Abbott, N. Abdelrahman, S. Abhijit, I. Abualrob, R. B. Achari, J. Adam, L. Adamczyk, K. Adkins, A. Affolder, K. Agarw (…)2026-08-07
⚛️ nuclear experiments

Three-baryon femtoscopy as an effective 3→\rightarrow3 scattering experiment

This paper presents the first measurement of the three-proton correlation function in 13.6 TeV pp collisions at the LHC, demonstrating that three-hadron femtoscopy serves as an effective 3→\rightarrow3 scattering experiment that reveals a novel long-range attractive component in the isospin 3/2 three-body system and opens new avenues for studying three-body dynamics in the strangeness sector.

ALICE Collaboration2026-08-07
⚛️ high-energy experiments

Search for the charged lepton flavour violating decay η′→eμ\eta'\to e\mu

Using a dataset of approximately 90 million J/ψJ/\psi events collected by the BESIII detector, this study reports the first search for the charged lepton flavour violating decay η′→eμ\eta'\to e\mu, setting a new upper limit on its branching fraction of 6.3×10−76.3\times10^{-7} at the 90% confidence level, which improves upon previous results by nearly three orders of magnitude.

BESIII Collaboration, M. Ablikim, M. N. Achasov, P. Adlarson, X. C. Ai, C. S. Akondi, R. Aliberti, A. Amoroso, Q. An, Y. (…)2026-08-07
⚛️ high-energy experiments

High precision X-ray spectroscopy of kaonic neon

The SIDDHARTA-2 collaboration successfully performed high-precision measurements of kaonic neon X-ray transitions at the DAΦ\PhiNE collider, demonstrating the feasibility of sub-eV spectroscopy with low-Z gaseous targets and providing critical data to refine theoretical models of de-excitation processes and test Quantum Electrodynamics in strange exotic atoms.

F Sgaramella, D Sirghi, K Toho, F Clozza, L Abbene, C Amsler, F Artibani, M Bazzi, G Borghi, D Bosnar, M Bragadireanu, A (…)2026-08-06