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

Quantum-Enhanced Dark Matter Search Using Cat States

This paper reports the first experimental demonstration of using four-component cat states in a superconducting microwave cavity to search for dark photons, achieving an 8.1-fold signal enhancement and setting an unprecedented constraint on the kinetic mixing angle of ϵ<7.32×10−16\epsilon < 7.32 \times 10^{-16} near 6.44 GHz.

Pan Zheng, Yanyan Cai, Bin Xu, Shengcheng Wen, Libo Zhang, Zhongchu Ni, Jiasheng Mai, Yanjie Zeng, Lin Lin, Ling Hu, Xia (…)2026-05-11
⚛️ phenomenology

Lepton parity dark matter and naturally unstable domain walls

This paper proposes a minimal lepton parity dark matter model where a singlet Majorana fermion serves as the dark matter candidate, linking neutrino masses, dark matter stability, and a potentially observable stochastic gravitational wave background generated by the annihilation of naturally unstable domain walls arising from an accidental Z2\mathcal{Z}_2 symmetry.

Ernest Ma, Partha Kumar Paul, Narendra Sahu2026-05-11
⚛️ high-energy theory

Scale dependence improvement of the quartic scalar field thermal effective potential in the optimized perturbation theory

This paper introduces a "variational renormalization group" framework that combines renormalization group improvement with optimized perturbation theory to significantly reduce renormalization scale dependence in the thermal effective potential of scalar λϕ4\lambda \phi^4 theory, thereby enhancing the precision of critical temperature and pressure predictions for applications in cosmology and condensed matter physics.

Lucas G. Câmara, Marcus Benghi Pinto, Rudnei O. Ramos2026-05-11
⚛️ phenomenology

Higgs pair production in gluon fusion to higher orders in Higgs Effective Field Theory

This paper investigates Higgs pair production via gluon fusion within the Higgs Effective Field Theory (HEFT) framework, demonstrating that a consistent power counting at next-to-leading order requires the inclusion of higher-dimensional operators and necessitates a critical re-evaluation of the kinematic benchmark scenarios used in experimental di-Higgs searches.

Ilaria Brivio, Ramona Gröber, Konstantin Schmid2026-05-11
⚛️ general relativity

Vanishing Compactness Gap and Fermionic Compact Dark Matter in Hořava-Lifshitz Gravity

This paper demonstrates that in Hořava-Lifshitz gravity, the compactness gap between black holes and neutron stars can vanish for fermionic objects above a certain mass threshold, potentially blurring the classification of LIGO-Virgo-KAGRA detections and suggesting that fermions with a mass of approximately 40 GeV could constitute compact dark matter.

Edwin J. Son, Kyungmin Kim, John J. Oh2026-05-11
⚛️ phenomenology

Gravitational scalar production with a generic reheating scenario

This paper investigates the gravitational production of decoupled scalars across various reheating scenarios, deriving constraints on their properties and demonstrating that while universal gravity effects do not necessarily invalidate non-thermal dark matter models for specific inflaton potentials, the reheating dynamics significantly influence relic abundance and impose stringent limits on scalar parameters.

Francesco Costa, Jinsu Kim2026-05-11
⚛️ phenomenology

Fate of θ12θ_{12} under μ−τμ-τ Reflection Symmetry in Light of the First JUNO Results

This paper investigates a type-II seesaw model with A4A_4-derived μ−τ\mu-\tau reflection symmetry, finding that while it predicts maximal atmospheric mixing and maximal CP violation, its specific prediction for sin⁡2θ12≳0.335\sin^2\theta_{12} \gtrsim 0.335 is strongly disfavored by recent JUNO experimental results.

Ranjeet Kumar2026-05-11
⚛️ phenomenology

Decoding the near-threshold X0, 1(4140)X_{0,\,1}(4140) and X1(4685)X_{1}(4685) states via OZI-suppressed coupled-channel scattering

This paper utilizes OZI-suppressed coupled-channel scattering analysis within the effective range expansion framework to identify the X0(4140)X_{0}(4140) as a dynamically generated pole and the X1(4685)X_{1}(4685) as a ψ(2S)ϕ\psi(2S)\phi hadronic molecule, thereby resolving empirical ambiguities and illuminating the roles of Fierz rearrangement and OZI suppression in low-energy strong interactions.

Mao-Jun Yan2026-05-11