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.

⚛️ high-energy experiments

Flavorful Lepton-Number-Violating SMEFT: Loop Mixing, 0νββ0\nu\beta\beta and Rare Meson Decays

This paper demonstrates that one-loop operator mixing in lepton-number-violating dimension-7 SMEFT fundamentally reshapes flavor sensitivity by radiatively connecting neutrinoless double beta decay and rare meson decays, thereby significantly extending the reach for new physics across different quark and lepton flavor sectors.

Lukáš Gráf, Chandan Hati, Ana Martín-Galán, Oliver Scholer2026-09-24
⚛️ high-energy theory

Scalar Gauss-Bonnet Wormholes and the Imaginary Distance Bound

This paper investigates O(4)O(4) symmetric Euclidean wormholes in four-dimensional gravity with a massless scalar coupled to the Gauss-Bonnet invariant, demonstrating that while the coupling modifies scalar trajectories and on-shell actions in both flat and anti-de Sitter spaces, the imaginary distance bound remains unchanged in the former and is shifted upward in the latter, thereby determining the leading large-charge behavior of the renormalized fixed-charge action.

Alex Kehagias, Antonio Riotto2026-09-24
⚛️ phenomenology

Exploring the Singlino-dominated Thermal Neutralino Dark Matter in the Z3Z_3 invariant NMSSM

This paper investigates the parameter space of the Z3Z_3-invariant NMSSM where a Singlino-dominated neutralino serves as dark matter, identifying viable regions consistent with experimental constraints, analyzing dominant annihilation mechanisms, and evaluating the discovery potential of triple-boson final states at the High-Luminosity LHC.

Amandip De, Rahool Kumar Barman, Amit Adhikary, Biplob Bhattacherjee, Rohini M. Godbole2026-09-23
⚛️ lattice

Unveiling the Collins-Soper kernel in inclusive DIS at threshold

This paper revisits the factorization of inclusive deep inelastic scattering near the kinematic threshold using collinear, off-light-cone operators to demonstrate that the Collins-Soper kernel universally governs rapidity evolution in both this process and transverse-momentum-dependent semi-inclusive DIS, thereby resolving outstanding issues regarding soft radiation and rapidity divergences.

Andrea Simonelli, Alberto Accardi, Matteo Cerutti, Caroline S. R. Costa, Andrea Signori2026-09-23
⚛️ phenomenology

Lorentz-Equivariance without Limitations

This paper introduces Lorentz Local Canonicalization (LLoCa), a method that ensures exact Lorentz-equivariance for arbitrary neural networks with minimal overhead, demonstrating state-of-the-art performance in amplitude regression, event generation, and jet tagging while highlighting the significance of symmetry breaking.

Luigi Favaro, Gerrit Gerhartz, Fred A. Hamprecht, Peter Lippmann, Sebastian Pitz, Tilman Plehn, Huilin Qu, Jonas Spinner2026-09-23
⚛️ high-energy theory

Precision Measurements of the Electroweak Mixing Angle in the Region of the Z pole

This paper presents the most precise single-experiment measurement of the effective leptonic weak mixing angle to date, sin⁡2θeffℓ=0.23154±0.00024\sin^2\theta^\ell_{\rm eff} = 0.23154 \pm 0.00024, extracted from CMS Drell-Yan data at 13 TeV using enhanced PDF constraints, which shows excellent agreement with the Standard Model prediction.

Arie Bodek, Hyon-San Seo, Un-Ki Yang2026-09-23
⚛️ high-energy experiments

Multiple Axions in Laboratory Experiments

This paper develops general formulas for axion-photon oscillations involving multiple axion species, demonstrating that their interference and coherence effects can qualitatively alter, enhance, or suppress experimental signals in light-shining-through-a-wall, helioscope, and haloscope searches, thereby offering new avenues to identify and characterize axion multiplicity.

Arturo de Giorgi, Joerg Jaeckel, Sebastian Monath, Volodymyr Takhistov2026-09-23
⚛️ high-energy experiments

Novel Light Dark Matter Detection with Quantum Parity Detector Using Qubit Arrays

This paper proposes a novel two-chip Qubit-based Light Dark Matter detector utilizing quantum parity measurement and full phonon/quasiparticle simulations to achieve nearly 100% efficiency in detecting ≳30\gtrsim 30 meV energy depositions, thereby advancing sensitivity to dark matter scattering and absorption by orders of magnitude.

Xuegang Li, Yuxiang Liu, Jing Shu, Ningqiang Song, Yidong Song, Junhua Wang, Yue-Liang Wu, Tiantian Zhang, Yu-Feng Zhou2026-09-23