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.

⚛️ phenomenology

Dark Photons in the Radio Sky: II. Resonant Conversions in the Intergalactic Medium

This paper details the analysis pipeline for forecasting the Square Kilometre Array's sensitivity to dark photons via resonant conversions in the intergalactic medium, demonstrating that combining SKA with galaxy surveys and 21-cm experiments could detect dark photons with masses between 5×10−155\times 10^{-15} and 5×10−125\times 10^{-12} eV and kinetic mixing parameters as low as 10−810^{-8}.

Ethan Baker, Hongwan Liu2026-09-18
⚛️ nuclear experiments

Enhanced hydrodynamic predictions for v02(pT)v_{02}(p_T)

This paper presents data-driven hydrodynamic predictions for the new observable v02(pT)v_{02}(p_T) in Pb+Pb collisions at sNN=5.02\sqrt{s_{NN}}=5.02 TeV, demonstrating its agreement with existing data and forecasting unique features such as a high-pTp_T decrease, meson-baryon splitting, and non-monotonic proton behavior that distinguish it from traditional flow observables.

Rupam Samanta, Tribhuban Parida, Jean-Yves Ollitrault2026-09-18
⚛️ phenomenology

Testing Higgs-Coupled Minimal Dark Matter with Solar Neutrinos after the LZ High-Recoil Event

This paper investigates the Higgs-coupled Minimal Dark Matter interpretation of a recent LZ nuclear-recoil event and finds that, while the model successfully reproduces the terrestrial signal, the resulting high-energy solar neutrino flux from DM annihilation strongly conflicts with IceCube constraints for most thermal mass benchmarks, particularly those below 48 TeV.

Mattia Di Mauro2026-09-18
⚛️ phenomenology

Lukewarm inflation, primordial black holes and gravitational waves

This paper proposes that a secondary period of lukewarm inflation can simultaneously dilute unwanted thermal relics and generate a nearly scale-invariant enhancement of small-scale curvature perturbations, thereby producing a stochastic gravitational wave background consistent with the NANOGrav signal and a population of sub-solar mass primordial black holes that could constitute a significant fraction of dark matter.

Paulo B. Ferraz, António Torres Manso, João G. Rosa2026-09-18
⚛️ phenomenology

Probing Scalar-Induced First-Order Phase Transitions with the Diffuse Supernova Neutrino Background

This paper proposes that the Diffuse Supernova Neutrino Background (DSNB) can serve as a novel probe for scalar-induced first-order phase transitions in core-collapse supernovae, demonstrating that current and future neutrino detectors can constrain the associated scalar parameter space, particularly depending on the neutrino mass ordering.

Sudipta Das, Shamik Niyogi, Manibrata Sen2026-09-18
⚛️ phenomenology

Resonant Di-Higgs Searches in bbˉτ+τ−b\bar{b}\tau^+\tau^- at HL-LHC: Supersymmetry versus Compositeness Benchmarks

This paper investigates the High-Luminosity LHC's potential to discover resonant di-Higgs production in the bbˉτ+τ−b\bar{b}\tau^+\tau^- channel, finding that while Supersymmetry benchmarks face significant background challenges, Compositeness models offer substantial discovery potential in a background-free environment.

Atri Dey, Carl Johan Konigsson, Stefano Moretti, Luigi Delle Rose, Luca Panizzi, Stefania De Curtis2026-09-18