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.
This paper demonstrates that the observed violation in decays implies a penguin amplitude significantly larger than Standard Model predictions and cannot be explained by rescattering alone, thereby providing strong model-independent evidence for physics beyond the Standard Model.
This paper investigates the sensitivity of future high-energy colliders to dimension-8 neutral triple gauge couplings in production, demonstrating that machine learning techniques applied to angular distributions and beam polarization can significantly enhance the discovery potential for new physics scales up to the multi-TeV range.
Using 1.3×10²¹ protons on target, the MicroBooNE collaboration reports new flux-integrated differential cross-section measurements for charged-current muon neutrino-argon interactions without final-state pions, finding good agreement with event generators in single-differential distributions but more limited agreement in double-differential ones.
This paper presents a direct in-situ comparison of FBK VUV-HD3 and HPK VUV4 SiPMs within the LoLX liquid xenon detector, revealing that HPK devices detect 33–38% less light than FBK devices under operating conditions and demonstrating that this discrepancy is resolved by an optical simulation incorporating angular and wavelength-dependent surface shadowing effects.
This paper proposes a novel axion detection method for masses between and eV that utilizes a large cylindrical sample with low electrical conductivity to generate a measurable bulk oscillating current under a magnetic field, offering a feasible signal-to-noise ratio even at cryogenic temperatures.
This paper employs QCD sum rules to investigate the masses of purely top-quark bound states, finding that the calculated pseudoscalar toponium mass aligns with recent CMS and ATLAS observations near the threshold while also providing theoretical predictions for the vector toponium and triply-top baryon to guide future high-energy collider experiments.
Using 39.1 kg·yr of exposure from the PandaX-4T experiment, this study presents the most precise measurement to date of the Xe two-neutrino double beta decay half-life, provides a consistent measurement of the nuclear matrix element ratio , and establishes the world's most stringent limit on Majoron-emitting modes with spectral index .
This paper investigates the potential for the Mu2e experiment to detect lepton-flavor-violating transitions in muonic atoms mediated by axion-like particles, concluding that while light mediators can parametrically enhance the rate, stringent constraints from electron anomalous magnetic moments and other flavor-violating processes severely limit the observable branching ratio to at most , making the upcoming Mu3e experiment the most promising probe for the viable parameter space.
This paper presents significant upgrades to the Super-Kamiokande "SNWATCH" system, including a new HEALPix-based fitter and an optimized maximum-likelihood fitter that leverage gadolinium-enhanced data to reduce supernova alert generation time to approximately 90 seconds while improving the accuracy of pointing direction reconstruction.
This paper presents measurements of prompt and non-prompt J/ production yields at midrapidity in 13 TeV pp collisions, revealing a stronger-than-linear increase in self-normalized yields with charged-particle multiplicity that varies depending on the azimuthal region relative to the J/ momentum.