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

Two Feynman integral families for vector boson fusion at NNLO QCD

This paper constructs canonical master integrals and dlog⁡\mathrm{d}\log forms for planar and non-planar two-loop Feynman integral families relevant to vector boson fusion Higgs production at NNLO QCD, providing strategies to handle nested square roots and expressing the results in an algebraically independent function basis via numerical integration of differential equations.

Linus Götzfried, Andreas von Manteuffel2026-09-30
⚛️ high-energy experiments

The new LHCb beauty-strange state as the bottom partner of the Ds0∗(2317)D_{s0}^*(2317): a LQCD constrained coupled-channel chiral analysis

This paper demonstrates that the newly observed LHCb beauty-strange state is the natural bottom partner of the Ds0∗(2317)D_{s0}^*(2317), emerging as a BˉK\bar{B}K bound state with a large BˉK\bar{B}K component and an isospin-violating width that is successfully described by coupled-channel chiral amplitudes constrained by lattice QCD without requiring direct experimental input.

Miguel Albaladejo, Pablo Encarnación, Albert Feijoo, Juan M. Nieves2026-09-30
⚛️ general relativity

Gravitational-wave dark sirens as astrophysical probes: inferring galaxy-merger relations and identifying individual hosts

This paper proposes a hierarchical framework that transforms gravitational-wave dark sirens from purely cosmological tools into astrophysical probes capable of simultaneously inferring galaxy-merger relations and identifying individual host galaxies, as demonstrated by successfully recovering NGC 4993 as the host of GW170817.

Alessandro Agapito, Michele Mancarella2026-09-30
⚛️ phenomenology

Soft Gravitons, Hard Truths: Infrared Safety of Particle Processes in a Gravitational-Wave Background

This paper demonstrates that while leading-order soft-graviton arguments incorrectly suggest gravitational waves enhance particle decay rates, a rigorous all-orders resummation reveals that Bose-enhanced emission and absorption exactly cancel, preserving the infrared safety and mutual transparency between matter and gravitational radiation.

Wen-Yuan Ai, Sebastian A. R. Ellis, Josef Pradler2026-09-29
⚛️ phenomenology

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

This paper analyzes Belle II data to demonstrate that a light invisible resonance with a mass of approximately 2.1 GeV provides a compelling and statistically significant explanation for the observed excess in B+→K+ννˉB^+\to K^+\nu\bar{\nu} decays, strongly favoring a new-physics hypothesis over the Standard Model alone.

Lorenz Gärtner, Nikolai Krug, Thomas Kuhr, Michael A. Schmidt, Slavomira Stefkova, Bruce Yabsley2026-09-29
⚛️ phenomenology

Dynamical generation of fermion mass in a scalar-fermion theory with λϕ4λϕ^4 interaction

Using the Cornwall-Jackiw-Tomboulis method, this paper demonstrates that a massless fermion coupled to a scalar field with λϕ4\lambda\phi^4 interaction can dynamically acquire mass through spontaneous symmetry breaking when the coupling constant exceeds a specific threshold, whereas it remains massless within that threshold where the vacuum stays symmetric.

Somnath Majumder, Krishnendu Mukherjee2026-09-29