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.

⚛️ high-energy experiments

Boosting Sensitivity to HHbbˉγγHH\to b\bar{b} γγ with Graph Neural Networks and XGBoost

This paper demonstrates that a Graph Neural Network (GNN) outperforms an XGBoost classifier in enhancing the sensitivity of HHbbˉγγHH \to b\bar{b}\gamma\gamma searches at 13.6 TeV, significantly improving the expected upper limits on the double Higgs production cross-section and the Higgs boson self-coupling (κλ\kappa_\lambda) compared to current ATLAS results.

Mohamed Belfkir, Mohamed Amin Loualidi, Salah Nasri2026-02-11
⚛️ phenomenology

Spectral instability of horizonless compact objects within astrophysical environments

This paper investigates how astrophysical matter environments influence the spectral instabilities of horizonless exotic compact objects, finding that while such environments can destabilize certain modes—specifically overtones and loosely-compact objects—the fundamental modes of ultra-compact objects remain remarkably robust.

Kyriakos Destounis, Mateus Malato Corrêa, Caio F. B. Macedo, Rodrigo Panosso Macedo2026-02-11
⚛️ high-energy experiments

Constraints on invisible B+K+XB^{+}\to K^{+} X decays from the Belle II B+K+ννˉB^{+} \to K^{+} ν\barν measurement

This paper demonstrates that a light invisible resonance (with a mass of approximately $2.1$ GeV) provides a compelling explanation for the 2.7σ2.7\sigma excess observed by Belle II in B+K+ννˉB^{+} \to K^{+} \nu\bar{\nu} decays, with both Bayesian and frequentist analyses favoring this new-physics hypothesis over the Standard Model.

Lorenz Gärtner, Nikolai Krug, Thomas Kuhr, Michael A. Schmidt, Slavomira Stefkova, Bruce Yabsley2026-02-11