1495 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.
This paper demonstrates that while the Krauss-Nasri-Trodden (KNT) model can satisfy low-energy experimental constraints, a significant portion of its viable parameter space is ruled out by vacuum stability conditions when renormalization group effects are considered, leaving most of the remaining region testable through future charged lepton flavor violating experiments.
This paper summarizes recent advancements in using constituent-based machine learning architectures, such as graph neural networks and transformers, to classify hadronic final states in the ATLAS Experiment, detailing their performance on simulated and real data while outlining future directions for data-driven and model-independent tagging strategies.
Using 8.4 fb of LHCb data, this study performs an amplitude analysis of the decay to simultaneously determine local and nonlocal amplitudes across the full dimuon mass spectrum, revealing that the compatibility of Wilson coefficient combinations with the Standard Model varies between 1.6 and 4 depending on the chosen form factors.
This paper proposes a method to fully reconstruct the kinematics of tau lepton pairs at a Higgs factory collider to enable quantum tomography of their spin correlations, concluding that achieving a photon angular resolution of approximately 1 mrad is the most critical detector requirement for this analysis.
This paper summarizes recent electroweak measurements from the CMS experiment at the Large Hadron Collider, highlighting high-precision determinations of key parameters and process rates at 13.6 TeV that often match or exceed the precision of previous lepton collider results.
This paper reviews recent advancements in pattern recognition and data analysis for Ring Imaging Cherenkov (RICH) detectors, covering improvements in traditional reconstruction methods, the integration of modern machine learning, and emerging trends like global particle identification and generative models for simulation.
Using 196 fb of proton-proton collision data at 13 and 13.6 TeV collected by the ATLAS detector, this paper presents the first search for non-resonant Higgs boson pair production in association with top-quark pairs (), setting a 95% confidence-level upper limit of 20 times the Standard Model prediction on the production cross-section and constraining the corresponding Higgs effective field theory Wilson coefficient.
This paper proposes a revitalized Dark Technicolor framework that embeds QCD-like dynamics to dynamically generate the Higgs mass while satisfying electroweak precision tests and resolving the flavor problem, predicting suppressed direct fermion couplings but promising discovery potential for techni-hadrons at future high-energy colliders through specific decay channels.
This paper utilizes a semi-analytical model of galaxy and supermassive black hole evolution within the CDM paradigm to demonstrate that the observed stellar mass–black hole mass relation at high redshifts disfavours fuzzy dark matter fields with masses below eV and warm dark matter particles with masses below 7.2 keV at the 95% confidence level.
Using dispersion theory to account for strong pion-pion final-state interactions, this study demonstrates that the substructure near the threshold in decays can be reproduced without invoking an extra resonance, attributing the observed dip primarily to a helicity-flip amplitude rather than the virtual exchange of the state.