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

Dark Charge Conjugation and Complementary Constraints from D0D^0 Mixing and Rare Decays with Massless Dark Photons

This paper demonstrates a symmetry-resolved complementarity between D0D^0 mixing and rare decays involving massless dark photons, showing how combining these constraints allows for the analytical elimination of flavor dependence to derive direct bounds on invisible decay rates and conditional limits on dark charge conjugation breaking portals.

X. Zhong, X. Q. Shen2026-08-18
⚛️ phenomenology

Exploring charmonia ηc(6S,7S)\eta_c(6S,7S) in the Λc+Λˉc−\Lambda_c^+\bar{\Lambda}_c^- invariant mass spectrum of B0→KS0Λc+Λˉc−B^0 \to K_S^0\Lambda_c^+\bar{\Lambda}_c^-

This paper analyzes the B0→KS0Λc+Λˉc−B^0 \to K_S^0 \Lambda_c^+ \bar{\Lambda}_c^- decay to propose that the observed 4.63 GeV enhancement in the Λc+Λˉc−\Lambda_c^+\bar{\Lambda}_c^- spectrum corresponds to the charmonium state ηc(6S)\eta_c(6S), while noting a significant discrepancy between the fitted production rate and theoretical predictions from factorization and hadron-loop mechanisms.

Cheng-Xi Liu, Jun-Zhang Wang, Xiang Liu2026-08-18
⚛️ phenomenology

Photon Fragmentation Functions in LHAPDF: Existing Sets and a Pythia-Based Extraction

This paper presents a pragmatic study of photon fragmentation functions by extracting flavor-dependent distributions from Pythia parton-shower events and converting established parameterizations into LHAPDF grids, demonstrating that logcubic interpolation better captures their complex dependencies than linear methods and providing a portable baseline for future phenomenological analyses.

Alexander Puck Neuwirth2026-08-18
⚛️ general relativity

Multipolar Neutrino Radiation in Binary Neutron Star Mergers: Angular Structure, Rotational Variability, and Implications for Electron Fraction

This study utilizes fully general-relativistic simulations to demonstrate that binary neutron star mergers produce neutrino radiation dominated by a quadrupolar geometry with persistent polar enhancement and equatorial suppression, exhibiting coherent azimuthal modulations linked to differential rotation that subsequently drive latitude-dependent variations in the electron fraction of the ejecta.

Kutay Arınç Çokluk, Albino Perego, Federico Maria Guercilena, Kadri Yakut2026-08-18