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 theory

Environmental Effects in Post-Minkowskian Dynamics: Effective Field Theory, Feynman Rules, and Ward Identities for Compact Objects in Relativistic Fluids

This paper develops a hydrodynamic effective field theory for compact objects moving through inviscid fluids by establishing Feynman rules and generalized Ward identities that link graviton and phonon amplitudes, thereby enabling the incorporation of environmental effects into post-Minkowskian calculations such as the derivation of relativistic dynamical friction.

Zvi Bern, Samuel Degen, Enrico Herrmann, Mikhail P. Solon, Anna M. Wolz2026-09-18
⚛️ nuclear theory

On the Origin of QCD Collectivity in High-Multiplicity Jets: A Transport Model Study

This study employs a hybrid transport model to demonstrate that the observed elliptic anisotropy in high-multiplicity jets arises primarily from hadronic rescattering driven by initial geometric eccentricity, thereby establishing a geometry-response mechanism for jet collectivity while highlighting the sensitivity of jet substructure variables to initial spatial configurations.

Xiao Huang, Xiaoyu Liu, David Qian, Wei Li, Zi-Wei Lin, Xin-Nian Wang, Wenbin Zhao2026-09-17
⚛️ lattice

A novel view of the flavor-singlet spectrum from multi-flavor QCD on the lattice

This paper presents a high-statistics lattice study of the flavor-singlet scalar and pseudoscalar spectra in SU(3) gauge theories with 4, 8, and 12 light fermion flavors, contrasting these results with QCD and previous simulations to explore the dynamics of strongly interacting sectors relevant to beyond-the-Standard-Model physics.

Yasumichi Aoki (the LatKMI Collaboration), Tatsumi Aoyama (the LatKMI Collaboration), Ed Bennett (the LatKMI Collaborati (…)2026-09-17
⚛️ phenomenology

Testing predictions of discrete flavour and modular symmetries at DUNE and Hyper-K with JUNO constraints

This paper investigates how the combined sensitivities of next-generation long-baseline experiments DUNE and Hyper-K, constrained by JUNO's precise measurements, can test and potentially rule out fixed-column lepton mixing predictions derived from discrete and modular symmetries by analyzing their specific correlations between the atmospheric mixing angle and the Dirac CP phase.

Debajyoti Dutta, Srubabati Goswami, Monal Kashav, Ketan M. Patel2026-09-17
⚛️ phenomenology

Astrophysical Signatures of Fermionic Dark Matter

This paper investigates fermionic dark matter forming compact objects supported by degeneracy pressure, deriving mass constraints from microlensing surveys and concluding that while their accretion-induced burst emission cannot explain the Galactic Center GeV excess, such admixed dark matter-baryon objects could potentially account for a fraction of the Universe's missing baryons.

Vinit D Tyagi (Department of Physics and Electronics, Christ University, Bengaluru, India), Suhas S S (Department of Phy (…)2026-09-17
🔭 astrophysics

FOSSIL: A future mission for CMB spectral distortion measurements

The paper proposes FOSSIL, a future space mission designed to achieve unprecedented absolute spectroscopic measurements of CMB spectral distortions with a sensitivity gain of three orders of magnitude over COBE/FIRAS, thereby enabling groundbreaking constraints on early-universe physics, dark matter, and galaxy evolution while providing legacy astrophysical data.

N. Aghanim, B. Maffei, J. Aumont, A. Beelen, B. Borgo, E. Bozzo, J. Chluba, X. Coulon, S. Couturier, F. Cuttaia, B. Cyr (…)2026-09-17
⚛️ lattice

Collider Detector Observables from Lattice Spin Systems

This paper proposes using quantum simulation platforms to study collider detector observables by constructing lattice detector operators in spin systems, demonstrating their validity through quantitative agreement with conformal field theory in the 1+1-dimensional quantum Ising model and establishing a pathway for realizing high-energy collider physics on table-top quantum devices.

João Barata, Ying-Ying Li, Bo Wang, Hua Xing Zhu2026-09-17
⚛️ phenomenology

D(∗)ΔD^{(*)}\Delta interactions and the molecular interpretation of Σc(3200)0\Sigma_c(3200)^0

Inspired by the recent LHCb observation of Σc(3200)0\Sigma_c(3200)^0, this study utilizes the one-boson-exchange framework to propose that the state is a D∗ΔD^*\Delta molecule and predicts the existence of several related D(∗)ΔD^{(*)}\Delta molecular partners to guide future experimental searches.

Rui Chen, Yu-Yue Cui, Fu-Lai Wang2026-09-17