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 proposes a method to effectively halve the Standard Quantum Limit in high- cavity haloscopes by operating a Josephson Parametric Amplifier at half-pump frequency to symmetrically populate signal and idler bands, thereby doubling the measured axion signal power while keeping vacuum noise constant.
Using the Covariant Confined Quark Model, this paper calculates Standard Model predictions for the radiative and Dalitz decays of and investigates the potential contribution of the hypothetical ATOMKI X17 vector boson to the Dalitz channel.
Using 4.5 fb of collision data collected with the BESIII detector, this study reports the first observation of the singly Cabibbo-suppressed decay , provides the most precise measurements of the branching fractions for both and , and finds evidence for a contribution in the latter decay.
This paper proposes a framework for creating a portable, community-maintained agentic harness for High Energy Physics by promoting stable workflow components into versioned scientific operations with common protocols and machine-readable contracts to overcome interoperability challenges across different models and tools.
This paper demonstrates that Belle II can precisely measure neutrino electroweak couplings and separate their chiral structures using the mono-photon process, while also identifying this interaction as an irreducible background for dark boson searches at high luminosities.
This paper proposes a novel laboratory strategy to detect axion-like particles by utilizing third-harmonic generation from colliding high-intensity laser beams, which enables resonant enhancement of the axion-photon conversion rate through beam angle tuning to probe previously unexplored regions of axion parameter space.
This paper identifies two late-time evolutionary regimes for accreting axion clouds around compact objects—a collapse-driven "Bosenova" and a saturation regime—and demonstrates that the latter produces distinct, stable spectral lines that can be used to probe the global structure of the axion potential and its ultraviolet completion through terrestrial detection.
This paper demonstrates that combining the recursive soft drop technique from jet substructure physics with the CATHODE anomaly detection method enables the simultaneous detection of physics beyond the Standard Model signals with an arbitrary number of jets, overcoming previous limitations that restricted such searches to two-jet resonances.
The paper introduces "Panda Diplomacy," a generalizable point cloud self-distillation framework that enables foundation models to be pre-trained across diverse particle detector modalities (LArTPC, collider TPC, and water Cherenkov) with minimal architectural changes, achieving state-of-the-art performance in particle reconstruction and identification using orders of magnitude fewer labeled events than specialized baselines.
This paper investigates the inclusive lifetimes of and baryons using the homogeneous bag model and nonrelativistic quark model, demonstrating that spin-zero and spin-one diquark mixing significantly reduces the lifetimes of neutral states and that the lifetime extrema occur at mixed angles rather than in pure spin configurations.