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.

🔬 atomic physics

High-Frequency Gravitational Wave Constraints from Precision Spectroscopy

This paper presents the first constraints on high-frequency gravitational waves in much of the 100 kHz to 100 MHz range, although parts of this region have been previously probed by the Holometer and bulk acoustic wave devices. By utilizing optical precision spectroscopy to detect the modulation of photon frequencies in laser cavities, this method offers a path toward significantly enhanced sensitivity and an extended detectable frequency range of at least 1 GHz.

Dmitry Budker, Valerie Domcke, Joachim Kopp, Oleg Tretiak2026-07-15✓ Author reviewed ⓘ
⚛️ nuclear theory

Two-fluid ff-mode oscillations of dark-matter-admixed neutron stars

This study investigates quadrupolar ff-mode oscillations of dark-matter-admixed neutron stars in full general relativity, revealing that intermediate dark matter fractions can induce a weakly radiating oscillation branch with significantly enhanced damping times, thereby refining previous models by incorporating metric perturbations and radiative boundary conditions.

Zi-Yue Zheng, Ting-Ting Sun, Huan Chen, Xiao-Ping Zheng, Jin-Biao Wei, G. F. Burgio, H. -J. Schulze2026-07-15
⚛️ phenomenology

Signatures of X17X_{17} through Coherent Elastic Solar Neutrino-Nucleus Scattering in Direct Detection Searches

This paper presents the first comprehensive analysis of the hypothetical X17X_{17} boson using coherent elastic solar neutrino-nucleus scattering data from multi-ton dark matter detectors (XENONnT, PandaX-4T, and LUX-ZEPLIN), deriving stringent constraints on its vector and axial-vector couplings that significantly narrow the allowed parameter space for this proposed particle.

M. F. Mustamin, M. Demirci, M. Deniz2026-07-15
⚛️ high-energy experiments

Interpreting the Newly Observed Ξ(1720)\Xi(1720) State in the Spin-32\frac{3}{2} Ξ\Xi Spectrum

Using the two-point QCD sum rule approach, this study analyzes the low-lying spin-32\frac{3}{2} Ξ\Xi spectrum and identifies the newly observed Ξ(1720)\Xi(1720) resonance as the first radial (2S2S) excitation, as its calculated mass of 1727.52±42.39 MeV1727.52\pm42.39~\mathrm{MeV} aligns with the experimental value reported by BESIII.

K. Azizi, Y. Sarac, H. Sundu2026-07-15
⚛️ lattice

Hadronic vacuum polarization contribution to aμa_\mu from functional methods with strong and electromagnetic isospin breaking

This paper presents a continuum-QCD calculation of the leading-order hadronic vacuum polarization contribution to the muon's anomalous magnetic moment using Dyson-Schwinger and Bethe-Salpeter equations, incorporating strong and electromagnetic isospin breaking to yield a result of (710.0±14.5)×10−10(710.0 \pm 14.5) \times 10^{-10} that aligns well with recent lattice-QCD determinations.

Angel S. Miramontes, Adnan Bashir, Christian S. Fischer, Pablo Roig2026-07-15
⚛️ phenomenology

Spontaneous baryogenesis with large misalignment

This paper investigates particle production by a pseudo-Nambu-Goldstone boson in the spontaneous baryogenesis scenario with large misalignment angles, demonstrating through numerical studies in both Minkowski and FLRW spacetimes that the baryon asymmetry's cubic dependence on initial phases breaks down for large oscillations, leading to saturation near π\pi and a strong sensitivity to the field's damping rate.

Maxim Krasnov, Ufuk Aydemir, Maxim Khlopov2026-07-14