⚛️ Category

hep-ph

3371 papers

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.

⚛️ nuclear theory

Probing the chiral and U(1)U(1) axial symmetry restoration via meson susceptibilities in holographic QCD

Using a soft-wall holographic QCD model calibrated to reproduce the physical pion mass and pseudocritical temperature, this study demonstrates that while chiral symmetry restoration is clearly signaled by the degeneracy of chiral partner meson screening masses near TpcT_{\rm pc}, the restoration of U(1)U(1) axial symmetry occurs at a distinctly higher temperature (T∼0.190T \sim 0.190 GeV), highlighting a qualitative limitation of the model in describing the U(1)U(1) axial anomaly compared to Lattice QCD.

Hiwa A. Ahmed, Danning Li, Mamiya Kawaguchi, Mei Huang2026-03-16
⚛️ phenomenology

MAXI J1820+070: A rapidly spinning black hole with mild disk truncation in the soft state and a warm corona

This study utilizes broadband NuSTAR spectral modeling to demonstrate that the black hole MAXI J1820+070 possesses a rapid spin (a>0.75a > 0.75), exhibits mild disk truncation during the soft state, and features a soft X-ray excess originating from a warm corona beyond 10RgR_g rather than the plunge region.

Th. V. Papavasileiou, T. S. Kosmas, O. Kosmas, I. Sinatkas2026-03-16
⚛️ general relativity

Three-band dark-siren cosmology with intermediate-mass black hole binaries: synergy of Taiji, LGWA, and Einstein Telescope

This paper forecasts that a three-band gravitational-wave network combining Taiji, the Lunar Gravitational-wave Antenna, and the Einstein Telescope will significantly outperform two-detector configurations in constraining cosmological parameters, achieving sub-percent precision on the Hubble constant and competitive constraints on dark energy through the observation of intermediate-mass black hole binaries.

Ji-Yu Song, Yue-Yan Dong, Shang-Jie Jin, Si-Ren Xiao, Jing-Fei Zhang, Xin Zhang2026-03-16
⚛️ phenomenology

CP Violation in B(s)→ϕKB_{(s)}\to\phi K Decays: Standard Model Benchmarks and Isospin-Breaking New Physics

This paper employs a factorization approach to provide Standard Model benchmarks for CP violation in B(s)→ϕKB_{(s)}\to\phi K decays, proposing the unmeasured Bs0→ϕKSB_s^0\to\phi K_{\rm S} channel and deriving state-of-the-art isospin constraints to facilitate the detection of New Physics.

Robert Fleischer, Jelle Groot, K. Keri Vos2026-03-16
⚛️ phenomenology

Determination of Nuclear PDFs using Markov Chain Monte Carlo Methods

This paper presents the first nuclear parton distribution function (nPDF) determination using Markov Chain Monte Carlo (MCMC) methods within the nCTEQ framework, demonstrating that this approach reveals complex, non-Gaussian parameter structures and provides more reliable uncertainty quantification compared to traditional Hessian methods.

N. Derakhshanian, P. Risse, T. Jezo, M. Klasen, K. Kovarik, A. Kusina2026-03-16
⚛️ phenomenology

Radiative return meets GVMD

This paper improves the description of pion-photon interactions in the radiative return process e+e−→π+π−γe^+e^-\to \pi^+\pi^-\gamma by incorporating the pion form factor into Feynman rules at next-to-leading order, revealing percent-level effects in angular distributions near the pion form factor peak while demonstrating that total cross sections remain largely unaffected, with the new framework implemented in the Phokhara\texttt{Phokhara} generator and validated against KLOE measurements.

Pau Petit Rosàs, Olga Shekhovtsova, William J. Torres Bobadilla2026-03-16
⚛️ phenomenology

A 2% determination of NeffN_{\rm eff} from primordial element abundance, cosmic microwave background, and baryon acoustic oscillation measurements

By combining primordial element abundance measurements with cosmic microwave background and baryon acoustic oscillation data, this study establishes the tightest constraint to date on the effective number of relativistic species, finding Neff=2.990±0.070N_{\rm eff}=2.990\pm0.070, which strongly agrees with the standard model prediction and places stringent limits on light particles and models attempting to resolve the Hubble tension.

Samuel Goldstein, J. Colin Hill2026-03-16
⚛️ phenomenology

A search for super-imposed oscillations to the primordial power spectrum in Planck and SPT-3G 2018 data

This paper analyzes Planck and SPT-3G 2018 data to search for super-imposed oscillations in the primordial power spectrum, finding that combined datasets provide tighter constraints on oscillation amplitudes and reveal improved fits with significant statistical gains compared to individual datasets.

Akhil Antony, Fabio Finelli, Dhiraj Kumar Hazra, Daniela Paoletti, Arman Shafieloo2026-03-13
⚛️ lattice

Parton Distribution Functions in the Schwinger model from Tensor Network States

This paper proposes and demonstrates a method using tensor network states within the Hamiltonian formalism to accurately compute parton distribution functions for the vector meson in the massive Schwinger model directly in Minkowski space, thereby overcoming the limitations of Euclidean lattice calculations and offering a pathway for quantum simulations.

Mari Carmen Bañuls, Krzysztof Cichy, C. -J. David Lin, Manuel Schneider2026-03-13