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.
This paper presents the first complete NNNLO QCD calculations for the top-quark decay width and related observables, revealing a significant 0.8% reduction in the decay width that exceeds previous uncertainty estimates while demonstrating that -helicity fractions remain stable at the per-mille level, thereby establishing the theoretical precision required for future collider experiments.
This paper reviews the key historical experiments in hadron physics, tracing the evolution from the 1940s discoveries of pions and kaons through the evidence for internal quark structures to the emergence of complex multi-quark hadrons in the 21st century.
This paper introduces a graph-based algorithm for reconstructing displaced vertices from long-lived particle decays, implemented as a modular Delphes tool that demonstrates high efficiency and resolution in FCC-ee simulations to enable automated sensitivity projections for exotic Higgs branching fractions.
This paper re-evaluates neutrino fluxes from a 10 TeV muon collider using the latest design, finding significantly higher fluxes than previously estimated and identifying substantial opportunities for QCD, electroweak, and new physics research through neutrino interactions in forward detectors.
This paper introduces the MINT simulation to characterize the intense forward neutrino flux and its secondary particles at a 10 TeV muon collider, demonstrating that a 5 km distant detector could observe approximately interactions annually while enabling searches for beyond-the-Standard-Model physics like heavy neutral leptons.
This paper demonstrates that Lorentz-equivariant transformers, when optimized for inference efficiency, outperform standard transformers in large-size jet and flavor tagging tasks whenever geometric features are relevant, offering valuable insights for developing foundation models for LHC data.
This paper presents the first measurements of (multi-)strange particle production as a function of charged-particle multiplicity in oxygen-oxygen collisions at = 5.36 TeV by ALICE, aiming to investigate strangeness enhancement across different system sizes and compare these findings with Monte Carlo model predictions.
The ATLAS collaboration presents the first measurement of inclusive jet suppression at forward rapidity () in Pb+Pb collisions at TeV, revealing a significant, centrality-dependent suppression that is stronger in the region compared to central rapidities, thereby providing new constraints on parton energy loss mechanisms.
Using ATLAS detector data from 13 and 13.6 TeV proton-proton collisions, this study measures the Higgs boson decay to a photon and a low-mass dilepton pair, combining the results to achieve a 3.4 standard deviation observation of the signal with a strength consistent with Standard Model predictions.
This paper investigates the photoproduction of the fully-charmed tetraquark state off nuclei near the kinematic threshold using a collision model, demonstrating that specific observables like excitation functions and transparency ratios are sensitive to its internal structure (compact tetraquark, molecular, or mixed) and can thus help determine its nature in future experiments at electron-ion colliders.