⚛️ Category

hep-ph

3204 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.

Highly Excited Electron Cyclotron for QCD Axion and Dark-Photon Detection

This paper proposes a significantly enhanced detection scheme for meV-scale QCD axions and dark photons using highly excited cyclotron states of a trapped electron within an open-endcap trap, achieving background-free sensitivity to the predicted post-inflationary QCD axion mass range (0.1–2.3 meV) and dark photon kinetic mixing parameters as low as ϵ≈2×10−16\epsilon \approx 2 \times 10^{-16} through optimized experimental parameters and dielectric-enhanced cavities.

Xing Fan, Gerald Gabrielse, Peter W. Graham, Harikrishnan Ramani, Samuel S. Y. Wong, Yawen Xiao2026-05-18🔬 physics.atom-ph

A Superalgebra Within: representations of lightest standard model particles form a Z25\mathbb{Z}_2^5-graded algebra

This paper demonstrates that the representations of the Standard Model's lightest particles (excluding the top quark) form a Z25\mathbb{Z}_2^5-graded superalgebra isomorphic to the Euclidean Jordan algebra H16(C)H_{16}(\mathbb{C}), a structure derived from division algebras that naturally separates internal and spacetime symmetries and potentially bridges particle physics with quantum computing.

N. Furey2026-05-18⚛️ hep-ph

Manifestation of quark effects in nuclei via bremsstrahlung analysis in the proton-nucleus scattering

This paper proposes and theoretically validates a new method to observe quark effects in nuclei by analyzing in-medium modified nucleon magnetic moments through bremsstrahlung spectra in proton-nucleus scattering, specifically highlighting the potential of using ratios between carbon isotopes like 18^{18}C and 12^{12}C to isolate these effects.

Sergei P. Maydanyuk, K. Tsushima, G. Ramalho, Peng-Ming Zhang2026-05-18⚛️ nucl-ex

Neural simulation-based inference of the Higgs trilinear self-coupling via off-shell Higgs production

This paper proposes a hybrid neural simulation-based inference approach to constrain the Higgs trilinear self-coupling and other SMEFT operators using off-shell Higgs production at the High-Luminosity LHC, achieving near-theoretical-optimal sensitivity by combining matrix-element-enhanced training with classification-based background estimation.

Aishik Ghosh, Maximilian Griese, Ulrich Haisch, Tae Hyoun Park2026-05-18⚛️ hep-ex

Constraining the four-light quark operators in the SMEFT with multijet and VBF processes at linear level

This paper investigates constraints on ten four-light quark operators in the Standard Model Effective Field Theory by analyzing the interference between Standard Model and new physics contributions in multijet and vector boson fusion processes, while evaluating the sensitivity of differential distributions and the validity of the EFT approach by comparing linear and quadratic contributions.

Céline Degrande, Matteo Maltoni2026-05-18⚛️ hep-ph

Any Light Particle Searches with ALPS II: first science results

The ALPS II experiment at DESY conducted its first science campaign from February to May 2024, achieving a 20-fold improvement in sensitivity limits for axion-like particles without finding evidence of their existence, while demonstrating stable operation and preparing for future upgrades to further enhance detection capabilities.

Daniel C. Brotherton, Zachary R. Bush, Sandy Croatto, Mauricio Diaz-Ortiz, Jacob Egge, Aldo Ejlli, Henry Frädrich, Joe Gleason, Hartmut Grote, Ayman Hallal, Michael T. Hartman, Harold Hollis, Katharin (…)2026-05-18✓ Author reviewed ⓘ⚛️ hep-ex

Quantum sensing of high-frequency gravitational waves with ion crystals

This paper proposes a method for detecting high-frequency gravitational waves (10 kHz–10 MHz) using two-dimensional ion crystals, where resonant excitation of parity-odd drumhead modes is transferred to collective spin rotation via optical dipole forces to generate squeezed spin states that surpass the standard quantum limit, with sensitivity scaling favorably with crystal size and ion number.

Asuka Ito, Ryuichiro Kitano, Wakutaka Nakano, Ryoto Takai2026-05-18🔬 physics.atom-ph