2144 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.
Using a large sample of events collected by the BESIII detector, researchers discovered a statistically significant resonance-like structure near the mass threshold that is well-described by a QCD multipole expansion model incorporating S-D wave mixing, while standard chiral perturbation theory fails to reproduce this enhancement.
This paper summarizes the latest experimental results from the ATLAS and CMS Collaborations regarding top quark asymmetries measured at the LHC, which serve to probe subtle differences in top quark and antiquark production predicted by the Standard Model.
Using 138 fb of 13 TeV proton-proton collision data from the CMS experiment, this study presents a search for heavy resonances decaying into four leptons via light intermediate bosons, employing novel techniques to identify collimated dilepton pairs and setting upper limits on the production cross section in the previously unexplored dilepton mass range of 0.4–15 GeV without observing any significant excess over background predictions.
This paper presents a detailed simulation-based evaluation demonstrating that the Light Dark Matter eXperiment (LDMX) can achieve competitive sensitivity to long-lived, visibly decaying dark photons and axion-like particles, thereby complementing its primary search for invisible dark matter and significantly broadening its exploration of the sub-GeV dark sector.
This paper summarizes recent BESIII results on charmed-baryon decays derived from the world's largest sample of pairs, highlighting the observation of the rare semi-leptonic decay , the first measurement of the decay asymmetry in , and various branching fraction measurements and partial wave analyses.
This paper presents the first comprehensive theoretical study of the rare Dalitz decay , predicting its branching fraction and dilepton spectrum to establish it as a new probe for hadronic structure and a sensitive channel for searching for light dark photons at the BESIII experiment.
This paper reviews recent multiboson and vector boson scattering measurements from the ATLAS and CMS collaborations at the LHC, including new results at 13.6 TeV, which collectively provide a comprehensive test of the Standard Model's electroweak sector and stringent constraints on anomalous gauge couplings.
This paper analyzes 7 TeV LHCb Collaboration data on two- and three-pion Bose-Einstein correlations by combining the Glauber-Lachs formula with a two-component pion production model, utilizing specific pion exchange functions extended into four-dimensional Euclidean configuration space.
Using LHCb data at TeV, this study presents the first observation of the decay, measuring its branching ratio relative to the charged mode and finding evidence for the isospin partners and in the system.
This paper presents recent LHCb results on rare and very rare decays of third-generation particles, including first searches and the most stringent limits to date for processes such as , , , and , which serve as sensitive probes for physics beyond the Standard Model.