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.

🔭 astrophysics

Axion condensates in neutron stars and radial oscillation modes

This paper investigates how axion condensates within neutron stars, modeled using the BSk26 equation of state, alter the stars' equilibrium structure and radial oscillation spectrum by introducing a distinct family of highly damped axion modes and axion-induced damping effects that could potentially enable neutron star seismology to probe axion properties.

Antonio Gómez-Bañón, Pantelis Pnigouras, José A. Pons2026-01-29
⚛️ lattice

QQQˉQˉQQ\bar Q\bar Q Quark System and Gauge/String Duality

This paper employs gauge/string duality to analyze the string configurations and Born-Oppenheimer potentials of a QQQˉQˉQQ\bar Q\bar Q system, revealing that its ground state can manifest as a hadronic molecule, a tetraquark, or a superposition depending on geometry, while also deriving asymptotic energy expressions and demonstrating string tension universality for multiquark configurations.

Oleg Andreev2026-01-29
⚛️ phenomenology

Neural Fake Factor Estimation Using Data-Based Inference

This paper proposes a novel neural network-based method for estimating fake lepton backgrounds in high-energy physics by performing density ratio estimation in a high-dimensional feature space, which offers a more precise, flexible, and continuous alternative to traditional binned histogram techniques while reducing binning artifacts and improving extrapolation.

Jan Gavranovič, Lara Čalić, Jernej Debevc, Else Lytken, Borut Paul Kerševan2026-01-29
⚛️ phenomenology

Hybrid Resonant Type-I and Type-II Leptogenesis in SO(10) with Quasi-Degenerate Triplet and Right-Handed Neutrino Masses MTMN3M_T \simeq M_{N_3}

This paper proposes a hybrid resonant leptogenesis mechanism within renormalizable SO(10) grand unified theories, where the quasi-degeneracy of scalar triplet and right-handed neutrino masses naturally enhances the baryon asymmetry through resonant interference between type-I and type-II decay amplitudes, successfully reproducing the observed matter-antimatter asymmetry at the 101110^{11} GeV scale while predicting correlated low-energy signatures.

Gayatri Ghosh2026-01-29
⚛️ high-energy experiments

Exploring the properties of the Hadronic Phase in Heavy-Ion Collisions at RHIC Energies via Partial Chemical Equilibrium

This study utilizes the Hadron Resonance Gas model in Partial Chemical Equilibrium to analyze Au+Au collisions at RHIC energies, revealing that baryon annihilation ceases between chemical and kinetic freeze-out and demonstrating that inelastic hadronic interactions significantly shape the final hadron composition.

Rishabh Sharma, Chitrasen Jena, Volodymyr Vovchenko2026-01-29
⚛️ phenomenology

Parton Fragmentation Functions Extracted with a Physics-Informed Neural Network

This paper introduces a novel Physics-Informed Neural Network (PINN) approach that eliminates the need for traditional parameterized forms and separate DGLAP evolution to directly extract non-perturbative parton fragmentation functions from experimental data, demonstrating their accuracy and universal applicability across a wide range of collision energies.

Si-Wei Dai, Fu-Peng Li, Long-Gang Pang, Xin-Nian Wang, Ben-Wei Zhang, Han-Zhong Zhang2026-01-29
⚛️ phenomenology

Dark matter motivated sterile neutrino contribution to neutrinoless double beta decay

This paper investigates the impact of keV-scale sterile neutrinos, motivated by dark matter and constrained by the exact seesaw relation in a type-I framework, on neutrinoless double beta decay, revealing that their presence significantly modifies the effective mass by eliminating cancellation regions in the normal hierarchy and distorting the parameter space in the inverted hierarchy.

Debashree Priyadarsini Das, Sasmita Mishra2026-01-29