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.

⚛️ phenomenology

Non-singlet coefficient functions for charged-current deep-inelastic scattering to the third order in QCD

This paper presents compact approximate expressions for the third-order QCD coefficient functions of the structure functions F2F_2, FLF_L, and F3F_3 in charged-current deep-inelastic scattering, thereby completing the description of unpolarized inclusive W±W^{\pm} exchange processes and providing a unified collection of lower-order contributions for phenomenological analyses.

J. Davies (Liverpool U., Dept. Math.), A. Vogt (Liverpool U., Dept. Math.), S. Moch (Hamburg U., Inst. Theor. Phys. II) (…)2026-06-30
⚛️ phenomenology

Accumulating Hints for Flavour Violating Higgses at the Electroweak Scale

This paper demonstrates that extending the Standard Model with a second Higgs doublet can simultaneously explain multiple experimental anomalies, including flavor-violating Higgs decays, the W mass discrepancy, and B-physics tensions, while remaining consistent with stringent flavor constraints and predicting testable signatures like modified Higgs-tau couplings and top-quark flavor-changing decays at the LHC.

Andreas Crivellin, Syuhei Iguro2026-06-30
⚛️ phenomenology

Comprehensive study of axion photoproduction off the nucleon in chiral effective field theory

This paper calculates the amplitudes for axion photoproduction off the nucleon (γN→aN\gamma N \to a N) within chiral effective field theory by incorporating nucleon exchanges, the aγγa\gamma\gamma vertex, and vector meson exchanges, ultimately demonstrating how distinct production mechanisms manifest in cross sections to help distinguish between different axion models.

Xiong-Hui Cao, Zhi-Hui Guo2026-06-30
⚛️ high-energy experiments

Direct Detection of Ultralight Dark Matter via Charged Lepton Flavor Violation

This paper proposes a direct detection strategy for ultralight dark matter by searching for time-dependent modulations in charged lepton flavor-violating decays (such as μ→eϕ′\mu \to e\phi' and τ→e(μ)ϕ′\tau \to e(\mu)\phi') at accelerator-based experiments like Mu3e, Belle-II, and FCC-ee.

Innes Bigaran, Patrick J. Fox, Yann Gouttenoire, Roni Harnik, Gordan Krnjaic, Tony Menzo, Jure Zupan2026-06-30
⚛️ phenomenology

Prominent enhancement of axion thermalization rate from axion-kaon interactions

This paper demonstrates that axion thermalization rates in the early Universe are significantly underestimated above 100 MeV when neglecting axion-kaon interactions, as the inclusion of the aK↔πKa K \leftrightarrow \pi K channel—enhanced by hadron resonances—substantially increases scattering cross sections and leads to more stringent constraints on axion parameters from cosmological observations.

Jin-Bao Wang, Zhi-Hui Guo, Hai-Qing Zhou2026-06-30
⚛️ nuclear theory

ψ(2S)\psi(2S) production in jets using NRQCD

This paper utilizes recent LHCb data to demonstrate that both the Fragmenting Jet Function (FJF) and Gluon Fragmentation Improved Pythia (GFIP) formalisms significantly outperform default Pythia+NRQCD predictions in describing ψ(2S)\psi(2S) production in jets, while highlighting the distribution's utility as a discriminator to reveal large discrepancies among different ψ(2S)\psi(2S) Long-Distance Matrix Element (LDME) extractions.

Marston Copeland, Lin Dai, Yu Fu, Jyotirmoy Roy2026-06-30