2507 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 that the 248-keV event observed by LZ can be explained by near-threshold upscattering of 1.08-TeV thermal Higgsino dark matter within a high-scale supersymmetric framework featuring a Peccei-Quinn symmetry, which simultaneously addresses the strong-CP problem, suppresses proton decay, and resolves various cosmological issues.
This paper demonstrates that by subtracting hadronic recoil measured within a specific rapidity interval from the boson's transverse momentum, detector geometry can effectively suppress QCD radiation to unmask gluon saturation signatures in forward production, thereby lowering the effective hard scale and enabling a clearer probe of nonlinear small- QCD in proton-nucleus collisions.
Using 13 TeV proton-proton collision data from the LHCb detector, this study establishes the most precise constraints to date on CPT and Lorentz invariance violation in the meson system, measuring the CPT-violating parameter and setting limits on Lorentz-violating parameters at the level within the Standard Model Extension framework.
By analyzing the expected high-energy neutrino flux from Higgsino dark matter annihilation in the Sun and comparing it with IceCube's null results, the study establishes a robust lower limit on the mass splitting ( keV) that rules out the interpretation of a recent LZ event as endothermic inelastic scattering of Higgsino dark matter.
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.