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

Big Bang Nucleosynthesis and the Neutrino-Extended Standard Model Effective Field Theory

This paper demonstrates that Big Bang nucleosynthesis constraints on GeV-scale heavy neutral leptons within the neutrino-extended Standard Model Effective Field Theory provide a crucial upper bound on the theory's cutoff scale for masses above 100 MeV, thereby defining specific target regions for future laboratory searches.

Pieter Braat, Jordy de Vries, Jelle Groot, Julian Y. Günther, Juraj Klarić2026-02-16
⚛️ high-energy experiments

Indications for new scalar resonances at the LHC and a possible interpretation

This paper proposes a minimalistic model containing four scalar multiplets to simultaneously explain multiple excesses observed at the LHC (notably at 95 GeV and 650 GeV), arguing that these hints disfavor common scalar extensions while predicting specific charged scalars that make the theory testable and falsifiable despite current data limitations.

Anirban Kundu, Poulami Mondal, Gilbert Moultaka2026-02-13
⚛️ phenomenology

Constraining Super-Heavy Dark Matter with the KM3-230213A Neutrino Event

This paper presents a novel likelihood framework that utilizes the high-energy KM3-230213A neutrino event alongside multi-messenger constraints to establish the most stringent limits to date on super-heavy dark matter lifetimes (510291030s\gtrsim 5\cdot 10^{29}-10^{30} \rm s) while highlighting the critical potential of galactic neutrino flux measurements for future dark matter research.

Roberto Aloisio, Antonio Ambrosone, Carmelo Evoli2026-02-13