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

K(1690)K(1690) signal from COMPASS as a strange hybrid state

This paper proposes that the recently observed K(1690)K(1690) resonance is a strange hybrid meson rather than a conventional quark-antiquark state, based on a systematic analysis of the strange meson spectrum which identifies the K(1460)K(1460) and K(1830)K(1830) as the expected 21S02^1S_0 and 31S03^1S_0 states, and supports the hybrid interpretation through strong decay calculations and production mechanism similarities to the π1(1600)\pi_1(1600).

Bing Chen, Ri-Qing Qian, Xiang Liu2026-09-16
⚛️ phenomenology

Reconciling axion quality with post-inflation cosmology

This paper proposes a model where the Peccei-Quinn symmetry emerges accidentally from an SU(N)L×SU(N)R{\rm SU}(\mathcal{N})_L\times{\rm SU}(\mathcal{N})_R gauge structure to protect axion quality and resolve post-inflationary cosmological tensions, thereby allowing the axion to constitute the majority of dark matter with a predictable mass.

Luca Di Luzio, Samuele Di Valeriano, Marco Nardecchia, Enrico Nardi2026-09-16
⚛️ phenomenology

Generalized Detectors at Colliders

This paper develops a theoretical framework for generalized collider detectors that measure energy powers on specific hadron subsets by introducing universal nonperturbative "detector functions" to bridge infrared hadronic measurements with ultraviolet partonic calculations, thereby enabling the computation of multi-point correlation functions, QCD factorization, and the analysis of nonperturbative power corrections.

Mark Gonzalez, Kyle Lee, Ian Moult2026-09-16
⚛️ quantum physics

Adaptive detection of Rabi signals under composite hypotheses

This paper demonstrates that a myopic Bayesian adaptive policy for Rabi sensing, which dynamically selects measurement axes to maximize information gain, outperforms fixed non-adaptive strategies in detecting weak coherent drives with unknown amplitude and phase by achieving superior n−1/2n^{-1/2} sensitivity and Type-II error exponents under a fixed shot budget and calibrated false positive control.

So Chigusa2026-09-16
🔭 astrophysics

CMB-HD Foregrounds: Simulations, Source Detection, and Foreground Removal

This paper presents high-resolution simulations and a foreground removal method for the CMB-HD survey that effectively cleans cosmic infrared background, radio galaxies, and galaxy clusters, demonstrating that residual foregrounds will only minimally impact cosmological parameter constraints while maintaining the survey's sensitivity to light thermal relic particles.

Amanda MacInnis, Joshua Ange, Neelima Sehgal, Joshua A. Kable, Isabelle Blackstad2026-09-16
🔭 astrophysics

Neutron Star Merger Universality Relations for a Quark--Hadron Crossover Equation of State

This paper investigates how a crossover transition from hadronic to quark matter in neutron star mergers, particularly within the QHC21 equation of state, alters post-merger gravitational wave signals and causes measurable deviations from established universality relations, potentially offering a unique observational signature for such phase transitions.

Wei Sun, Grant J. Mathews, Atul Kedia2026-09-16