3371 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 demonstrates that introducing dark decay channels for sub-GeV heavy neutral leptons fails to evade cosmological constraints, as the resulting increase in extra radiation energy density actually strengthens Big Bang Nucleosynthesis bounds on their mixing angles.
Using QCD sum rules, this paper investigates triquark-antitriquark hexaquark configurations to interpret the BESIII-observed and states, finding that two predicted candidates match the experimental masses while offering new predictions for and states and analyzing their decay modes.
This paper proposes that if the reheating of the early universe is driven by thermal dissipation, it would leave distinctive imprints on the spectrum of primordial gravitational waves, offering a potential observational method to probe the underlying physics of this process.
This paper re-examines the uncertainty of the theoretical prediction for the ground-state hyperfine splitting in muonium and compares it with the assessments found in the two most recent CODATA adjustments of fundamental physical constants.
This paper formulates a stochastic generalization of the Schwinger effect to compute vacuum decay rates and particle number densities in transient, inhomogeneous, and fluctuating gauge-field backgrounds, providing closed-form analytical expressions for scalar and fermionic cases with applications to cosmological and astrophysical scenarios.
This paper employs a dispersive approach constrained by analyticity, unitarity, and recent Khuri-Treiman solutions for amplitudes to derive a minimal two-parameter representation of the form factors governing CP-conserving decays, successfully reproducing experimental data and determining previously unknown signs and amplitude components.
This paper establishes robust upper bounds on heavy QCD axion lifetimes as low as 0.017 seconds by analyzing Big Bang Nucleosynthesis constraints on neutron-to-proton ratio modifications from hadronic decays, a limit that surpasses projected future CMB bounds and remains largely insensitive to hadronic uncertainties.
This paper demonstrates that a future 3 TeV muon collider can decisively test the muonphilic dark matter hypothesis, which explains the Galactic Center GeV Excess, by projecting comprehensive exclusion limits across a wide range of mediator masses using four distinct search strategies with a -even mediator.
This paper presents a unified exact solution to the relativistic Boltzmann equation for a boost-invariant conformal gas on across all constant-curvature slicings, which reproduces known Bjorken and Gubser flows while introducing a novel analytic "Grozdanov flow" for hyperbolic foliations that naturally encompasses both hydrodynamic and free-streaming regimes.
This paper presents a study of the mass spectra and mass differences of heavy hadrons containing bottom quarks using MILC's 2+1+1 flavor HISQ gauge ensembles, employing a mixed-action approach with NRQCD for bottom quarks, anisotropic Clover for charm, and O(a)-improved Wilson-Clover for light and strange quarks.