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.

Higgs Physics at a s=10\sqrt{s} = 10 TeV Muon Collider

This paper evaluates the physics potential of a 10 TeV muon collider using the MUSIC detector concept and 10 ab1^{-1} of integrated luminosity, demonstrating its exceptional capability to precisely measure key Higgs processes and determine the trilinear self-coupling with a level of precision unattainable by other proposed future colliders.

Paolo Andreetto, Massimo Casarsa, Alessio Gianelle, Carlo Giraldin, Donatella Lucchesi, Leonardo Palombini, Lorenzo Sestini, Davide Zuliani2026-04-21⚛️ hep-ex

Search for the single production of vector-like quarks decaying into a W boson and a b quark using single-lepton final states in proton-proton collisions at s\sqrt{s} = 13 TeV

Using 138 fb1^{-1} of proton-proton collision data at 13 TeV collected by the CMS experiment, this study searches for single-produced vector-like quarks decaying into a W boson and a b quark in single-lepton final states, finding no significant excess over the Standard Model and setting the most stringent limits to date on their production cross section and coupling strength.

CMS Collaboration2026-04-21⚛️ hep-ex

Measurements of electroweak penguins and BB decays to final states with missing energy at Belle and Belle II

This paper presents results from the Belle and Belle II experiments on rare electroweak penguin BB decays involving missing energy, specifically analyzing bs+b\to s \ell^+\ell^-, bsτ+τb\to s\tau^+\tau^-, and bsννˉb\to s\nu\bar \nu transitions using a 1.3 ab1^{-1} dataset collected at the Υ(4S)\Upsilon(4S) resonance.

Valerio Bertacchi (on behalf of Belle II Collaboration)2026-04-21⚛️ hep-ex

Sequential Y(nS) suppression in high-multiplicity pp collisions: the experimental case for an early, globally correlated medium

This paper argues that the observed sequential suppression of Υ(nS)\Upsilon(n\mathrm{S}) and ψ(2S)\psi(2S) states in high-multiplicity $pp$ collisions cannot be explained by standard hadronic or string-based models, but instead provides compelling evidence for the formation of an early, globally correlated partonic medium.

Renato Campanini2026-04-21⚛️ hep-ph

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⚛️ hep-ex

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⚛️ hep-ex