2503 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 ALICE study presents the first multiplicity-dependent measurements of two-particle angular correlations for identified pions, kaons, and protons in pp collisions at TeV, revealing a persistent near-side baryon-baryon anticorrelation that challenges current Monte Carlo models and providing new insights into soft-QCD dynamics and hadronization.
This ALICE study at TeV introduces a novel event-by-event counting technique to measure the full probability distribution of strange and multi-strange hadron production in proton-proton collisions, revealing that this approach significantly enhances the sensitivity to distinguish between different underlying physics mechanisms in state-of-the-art Monte Carlo models compared to traditional mean-value analyses.
This paper presents the first measurement of three-dimensional femtoscopic correlations between identical charged kaons in p-Pb collisions at TeV, revealing that source sizes increase with multiplicity and decrease with pair transverse momentum, align with trends seen in other collision systems, and indicate a kaon emission evolution comparable to highly peripheral Pb-Pb collisions.
Using 5.4 fb of Run 2 proton-proton collision data at 13 TeV, the LHCb experiment searched for the lepton-flavour-violating decay and established an upper limit of on its branching fraction at the 90% confidence level.
This paper presents the first observation of significant transverse momentum and pseudorapidity dependent flow vector fluctuations in p$-$Pb collisions at TeV, confirming the existence of collective flow in small collision systems and providing critical constraints for theoretical models of initial geometry and event-by-event fluctuations.
This study demonstrates that the proposed Super Tau-Charm Facility (STCF) can achieve a statistically significant discovery (up to 20.5) of the fully-charmed vector tetraquark candidate in the channel through high-luminosity energy scans and single-tag reconstruction strategies, depending on the particle's uncertain dielectron width.
This paper demonstrates that the CaloClouds II generative model can effectively transfer knowledge across different detector geometries with minimal fine-tuning to accelerate particle shower simulation, while also investigating the risks of model collapse when training on its own generated data.
This paper presents a global Heavy Quark Expansion analysis of inclusive decays and lifetimes using a novel approach with correlated perturbative scales, yielding a value of and highlighting a persistent tension between theoretical predictions and experimental measurements that calls for new correlated moment data.
This paper investigates intrajet azimuthal anisotropies in high-energy proton-proton collisions by comparing LHC data with PYTHIA soft QCD model predictions across different jet axis definitions, finding that the QCD-scheme color reconnection tune best reproduces the observed collective signatures and offers new insights into nonperturbative QCD dynamics.
This paper reviews the current status of quark-flavour physics and outlines theoretical prospects for benchmark B-meson decay processes, emphasizing their critical role in testing the Standard Model and searching for New Physics at upcoming high-precision experiments like the HL-LHC, Belle II, and FCC-ee.