hep-ph papers | Gist.Science

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 theory

Interpolating conformal algebra in $(3+1)$ dimensions between the instant form and the light-front form of relativistic dynamics

This paper extends the interpolation of the Poincaré algebra between instant and light-front dynamics to the $(3+1)$ -dimensional conformal algebra by classifying its 15 generators as kinematic or dynamic functions of an interpolation angle, constructing a $6 \times 6$ projective spacetime representation, and demonstrating how light-front dynamics maximizes kinematic generators.

Hariprashad Ravikumar, Chueng-Ryong Ji2026-09-30

⚛️ phenomenology

Effective kinematic variables for searching for dark matter mediators in single top quark production processes

This paper proposes and validates through full Monte Carlo simulation effective kinematic variables in the rest frame of the top-quark and mediator decay cluster to search for, classify, and measure the masses of dark matter mediators in single top quark production processes at the LHC.

E. E. Boos, V. E. Bunichev, L. V. Dudko2026-09-30

⚛️ phenomenology

$t\bar{t}$ spin correlations from toponium production scenarios to non-relativistic resummation beyond the standard perturbative baseline

This paper compares $t\bar{t}$ spin correlation predictions from toponium bound state models and non-relativistic QCD resummation against LHC data, demonstrating that while toponium scenarios yield drastically enhanced correlations, the resummation effect significantly improves agreement with experimental distributions and cross-section measurements, suggesting a viable path to characterizing the observed $t\bar{t}$ excess.

A. Cota Rodríguez, Jesús A. V. Corral, A. Paredes Sotelo, J. A. Murillo Quijada2026-09-30

⚛️ general relativity

Population search for dark matter spikes in megamaser rotation curves

This paper presents a population search for dark matter spikes around supermassive black holes using water megamaser rotation curves, finding that while spikes are preferred in specific galaxies like NGC 4258, the presence of disk warps and a strict upper limit of roughly 10% of the black hole mass for any spike significantly constrain the detection and highlight the need for improved mapping of disk geometry to break degeneracies.

Gonzalo Herrera2026-09-30

⚛️ phenomenology

An Operator Analysis of Radiative Muon Decay

This paper investigates the sensitivity of radiative muon decay to new physics-induced four-fermion interactions of mass dimension seven and eight, demonstrating that their contributions can be distinguished from Standard Model predictions with characteristic coefficient magnitudes between $10^{-9}$ and $10^{-8}$ using a benchmark sample of $10^5$ events.

Arvind Rajaraman, Chao-Hsiang Sheu2026-09-30

⚛️ phenomenology

Spin-2 $QQ\bar Q\bar s$ Tetraquarks in QCD Sum Rules

This paper employs QCD sum rules with a symmetric axial-vector $\otimes$ axial-vector interpolating current to predict the masses of $J^{P}=2^{+}$ $cc\bar c\bar s$ and $bb\bar b\bar s$ tetraquarks as $5.239\pm0.061\GeV$ and $13.832\pm0.059\GeV$ , respectively.

Tarik Akan2026-09-30

⚛️ phenomenology

Flavor-resolved four-fermion probes at the FCC-ee $Z$ pole

This paper demonstrates that the Future Circular Collider (FCC-ee) can leverage Tera- $Z$ statistics and modern jet flavor reconstruction to study exclusive four-body $Z$ decays as precision probes of flavor-specific new physics, offering direct multi-TeV sensitivity to contact interactions and bridging the electroweak and flavor programs.

Syuhei Iguro2026-09-30

⚛️ nuclear theory

Impact of Open Heavy-Flavour Production on nCTEQ Nuclear PDFs

The paper introduces nCTEQ26OHF, a global analysis of nuclear parton distribution functions that replaces the Crystal-Ball function with an SACOT GM-VFNS calculation for open heavy-flavor production, demonstrating that the resulting PDFs remain consistent with the standard nCTEQ26 release and confirming that open heavy-flavor data alone provides sufficient constraints.

Jan Wissmann, Tomáš Ježo, Michael Klasen, Ingo Schienbein, Hubert Spiesberger2026-09-30

⚛️ phenomenology

Pion structure in magnetized nuclear medium at finite temperature

This paper investigates how magnetic fields, baryon density, temperature, and isospin asymmetry modify the pion's parton distribution functions and electromagnetic form factors in a nuclear medium by employing a unified framework that combines the chiral SU(3) quark mean field model with the light-cone quark model.

Fathimath Shifa N K, Navpreet Kaur, Abi Jebarson A, Arvind Kumar, Suneel Dutt, Harleen Dahiya2026-09-30

⚛️ phenomenology

Analytic next-to-leading-order helicity cross sections for vector-boson production at finite transverse momentum

This paper presents a complete analytic calculation of next-to-leading-order QCD helicity cross sections for vector-boson production at finite transverse momentum, implemented in the ultra-fast DYTurbo program and developed with the assistance of large language models to enable precision electroweak measurements at the LHC.

Stefano Camarda, Leandro Cieri, Giancarlo Ferrera, Lorenzo Rossi2026-09-30

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hep-ph

Interpolating conformal algebra in (3+1)(3+1)(3+1) dimensions between the instant form and the light-front form of relativistic dynamics

Effective kinematic variables for searching for dark matter mediators in single top quark production processes

ttˉt\bar{t}ttˉ spin correlations from toponium production scenarios to non-relativistic resummation beyond the standard perturbative baseline

Population search for dark matter spikes in megamaser rotation curves

An Operator Analysis of Radiative Muon Decay

Spin-2 QQQˉsˉQQ\bar Q\bar sQQQˉ​sˉ Tetraquarks in QCD Sum Rules

Flavor-resolved four-fermion probes at the FCC-ee ZZZ pole

Impact of Open Heavy-Flavour Production on nCTEQ Nuclear PDFs

Pion structure in magnetized nuclear medium at finite temperature

Analytic next-to-leading-order helicity cross sections for vector-boson production at finite transverse momentum

Interpolating conformal algebra in $(3+1)$ dimensions between the instant form and the light-front form of relativistic dynamics

$t\bar{t}$ spin correlations from toponium production scenarios to non-relativistic resummation beyond the standard perturbative baseline

Spin-2 $QQ\bar Q\bar s$ Tetraquarks in QCD Sum Rules

Flavor-resolved four-fermion probes at the FCC-ee $Z$ pole