5243 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 presents the first explicit calculation of dominant perturbative axion-matter couplings in heterotic string theory Calabi-Yau compactifications using neural networks to solve the required differential equations, revealing a hierarchy where model-dependent axions couple to fermions at tree level similar to DFSZ models, while model-independent axions exhibit loop-suppressed couplings akin to KSVZ constructions.
Using on-shell methods and relying solely on Poincaré invariance and unitarity, this paper establishes an all-order non-renormalization theorem that predicts specific vanishing mixing patterns between effective field theory operators at higher loop orders, providing scheme-independent constraints and new checks for calculations in theories like the Standard Model Effective Field Theory.
This paper presents an analytic framework for dark matter isocurvature perturbations in entropy-dilution scenarios driven by late-decaying massive states, revealing that viable models suppress isocurvature by the dilution factor to the 4/3 power and highlighting the complementarity between isocurvature constraints and collisionless damping as probes of this mechanism.
This paper demonstrates that inflationary correlators involving massive particle exchanges can be fully reconstructed from a low-energy effective field theory by applying unitarity and Bunch-Davies boundary conditions to resum divergent series through boundary differential operators, spectral representation, or Borel resummation, thereby recovering exponentially suppressed cosmological collider signals via analytic continuation.
AutoTherm is a modular, automated software framework that computes leading-order thermal production rates for off-equilibrium particles in cosmology by utilizing FeynRules, FeynArts, and FormCalc to handle model-independent Hard Thermal Loop resummation for -channel massless mediators.
Using the new AutoTherm tool to automate first-principles thermal field theory calculations, this paper revisits gravitino and axino production rates to demonstrate that strict leading-order schemes can yield unphysical results at soft momenta, proposing a tuned scheme that ensures positivity and reveals a previously underappreciated theoretical uncertainty factor of 1.5 to 3.
Motivated by a recent high-energy recoil event reported by the LUX-ZEPLIN collaboration, this paper proposes an endothermic -portal Majorana dark matter model within a gauged framework, demonstrating how the interplay between dark matter relic abundance constraints and LHC resonance searches can explain the anomaly while offering a testable synergy for future experiments.
This paper presents a thermodynamically consistent mean-field model of interacting relativistic charged bosons at finite temperature and isospin density, formulated in an Extended Canonical Ensemble with repulsive and interactions, which successfully reproduces lattice QCD results for isospin density, energy density, and trace anomaly using a single fitted parameter.
This study demonstrates that while mass-dependent ejection kicks leave a detectable signature in the differential displacement of free-floating planets after 100 million years of Galactic propagation, the overall kinematic heating of these populations is primarily driven by the evolution of the initial nonequilibrium disk rather than the ejection mechanism itself.
This paper models hierarchical black hole mergers as a coagulation problem to derive closed scaling laws for mass spectra, revealing that most formation channels lead to runaway growth (gelation) while only the early three-body channel allows for slow self-similar growth, with numerical results showing that energy radiated during mergers significantly alters the high-mass cutoff and total population mass.