5342 papers
Hep-Ph explores the fundamental forces that govern how particles interact and behave at the smallest scales imaginable. This field bridges the gap between theoretical predictions and experimental reality, helping scientists understand the building blocks of our universe without getting lost in complex mathematics. Whether investigating the Higgs boson or searching for new physics beyond current models, these studies push the boundaries of human knowledge about matter and energy.
At Gist.Science, we process every new preprint in this category as soon as it appears on arXiv. We strip away the dense jargon to offer both accessible plain-language explanations and detailed technical summaries, ensuring that groundbreaking research is understandable to everyone from students to seasoned experts. Below are the latest papers in this dynamic field, ready for you to explore with clarity and depth.
This paper proposes a two-component dark matter model involving an axion-like particle and a dark photon that explains the Galactic 511 keV line and satisfies the observed relic abundance through a freeze-in mechanism, while remaining consistent with constraints from H observations, the cosmic microwave background, and other astrophysical and collider searches.
This paper investigates the production of dark-photon dark matter from quantum fluctuations during Starobinsky inflation, demonstrating that the Weyl transformation-dependent variation of the longitudinal mode's kinetic function significantly impacts the relic abundance and constrains the dark-photon mass to the range of 5.6–7.4 μeV to match observed dark matter density.
This paper develops a quantitative framework to test the Hubble tension within an anisotropic Bianchi type I cosmology by deriving a weak-shear luminosity-distance quadrupole, demonstrating that while current early-Universe bounds on shear are too tight to resolve the tension, the proposed analytic method provides a falsifiable program for detecting late-time anisotropy using standard candles and sirens.
This paper presents a comprehensive calculation of pentaquark masses and Regge trajectories using the Godfrey-Isgur relativized quark model and Bethe-Salpeter formalism, demonstrating excellent agreement with experimental data for known Pc and Pcs states while revealing approximately linear radial trajectories consistent with a common confinement-driven pattern.
This paper investigates rare energy loss processes for ultrahigh-energy tau leptons, specifically muon pair and Primakoff pion production, finding that while their overall energy loss contributions are negligible compared to electron pair production, the short interaction length of dimuon emission makes it a potentially valuable signature for identifying tau neutrinos in Cherenkov telescopes.
The paper introduces pylhe, a lightweight pure-Python library that enables memory-efficient reading, writing, and conversion of Les Houches Event files (including LHE 3.0 and LHEH5 formats) while facilitating integration with modern columnar analysis and machine learning workflows.
This paper proposes enhancing the sensitivity of magnetic Weber bars for detecting high-frequency gravitational waves by utilizing Halbach array configurations and analyzing ring-down signals, demonstrating the potential to achieve strain sensitivities of with current technology and up to with plausible upgrades across a broad frequency range.
This paper proposes a model where dark matter consists of heavy 't Hooft-Polyakov monopoles produced via a thermal phase transition, requiring a specific parameter window where a light dark fermion suppresses monopole abundance while satisfying dark radiation constraints, thereby predicting observable gravitational waves and signals despite being undetectable by current conventional experiments.
This paper extends a transformer-based generative modeling approach, previously used to establish the fundamental performance limits for boosted top-quark jet tagging, to W, Z, and Higgs-to-gluon jets, revealing that the gap between current machine-learning taggers and the theoretical optimal limit is strongly jet-dependent and significantly smaller for these more challenging tasks.
This paper proposes an inflationary mechanism driven by flux stationarity near Calabi-Yau Hodge boundaries, which stabilizes moduli without extra flux costs and directly links internal geometric properties to observable primordial tensor perturbations that align with current CMB limits and future LiteBIRD and CMB-S4 targets.