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.

Bayesian analysis of the complex singlet model with phase transition gravitational waves

This paper demonstrates that the Taiji space-based gravitational-wave detector can effectively probe the complex singlet extension of the Standard Model by performing Bayesian and Fisher-matrix analyses to constrain Higgs self-couplings through the detection of electroweak phase transition signals, thereby highlighting the complementarity between gravitational-wave observations and collider physics.

Qingyuan Liang, Ligong Bian, Huai-Ke Guo, Yongcheng Wu2026-05-21⚛️ hep-ph

Intrinsic Properties of Large CP Violation in the Complex Two-Higgs-Doublet Model

This paper investigates the parameter space for large CP violation in the complex two-Higgs-doublet model, revealing that Type-I scenarios predict eEDM values within next-generation experimental reach due to gauge-sector CPV, while Type-II models allow for nearly maximal Yukawa-sector CPV suppressed to negligible eEDM levels through destructive interference, alongside a newly identified "hidden CPV" phenomenon in the near-alignment limit that can be probed at future colliders.

Soojin Lee, A. Hammad, Dongjoo Kim, Jeonghyeon Song2026-05-21⚛️ hep-ex

Spectroscopy of hidden-heavy tetraquark states with JPC=0J^{PC}=0^{--} in a color-octet configuration

Using QCD sum rules, this study predicts the existence of hidden-heavy tetraquark states with exotic JPC=0J^{PC}=0^{--} quantum numbers in color-octet configurations, estimating their masses to be approximately 10.8–11.1 GeV for the bottom sector and 4.3–4.6 GeV for the charm sector, thereby offering theoretical guidance for future experimental searches at Belle II, LHCb, and BESIII.

Bing-Dong Wan, Jun-Hao Zhang, Yan Zhang, Ming-Yang Yuan2026-05-21⚛️ hep-ph