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

Holographic QCD Matter: Chiral Soliton Lattices in Strong Magnetic Field

This paper demonstrates within the holographic QCD framework that the ground state in a strong magnetic field and finite baryon density is a chiral soliton lattice, which is interpreted as uniformly distributed D4-branes and unified through five-dimensional instanton charge, leading to a magnetic-field-dependent pion decay constant that qualitatively agrees with lattice QCD results.

Markus A. G. Amano, Minoru Eto, Muneto Nitta, Shin Sasaki2026-03-02
⚛️ phenomenology

Gravitational Waves and Cosmological Observables from First-Order Phase Transitions: Thermal Corrections at Low Temperature

This paper argues that complex low-temperature thermal corrections from heavy degrees of freedom in first-order phase transitions can be effectively modeled by a single new parameter, which is then used to quantify the resulting shifts in transition parameters and their impact on gravitational wave signals and cosmological observables.

Katharena Christy, James B. Dent, Sumit Ghosh, Jason Kumar, J. O'Thello Ward2026-03-02
⚛️ nuclear theory

Emergence of kaonium as a sharp resonance in photon-photon to meson-meson cross-sections

This paper demonstrates that the hypothetical mesonic atom kaonium (K+KK^+ K^-) manifests as a sharp resonance near 992 MeV in photon-photon collision cross-sections, significantly improving the fit to experimental data for processes like γγπ0η\gamma\gamma \to \pi^0 \eta despite its short lifetime and narrow width making direct detection challenging.

Alireza Beygi, S. P. Klevansky, R. H. Lemmer2026-03-02
⚛️ phenomenology

Strong Decays of the Light Exotic 0+0^{+-} and 2+2^{+-} Hybrid Mesons

Using a QCD Hamiltonian model in Coulomb gauge with a constituent quasigluon, this study calculates the strong decays of light exotic 0+0^{+-} and 2+2^{+-} hybrid mesons, finding both to be narrow states, with the unexpected narrowness of the 0+0^{+-} state attributed to the suppression of a unique decay mode in this framework.

Christian Farina, Eric S. Swanson2026-03-02
⚛️ high-energy experiments

Closepacking effects on strangeness and baryon production at the LHC

This paper investigates a string closepacking mechanism during hadronization that increases effective string tension to explain the LHC-observed rise in strange-hadron production with multiplicity, a model that successfully tunes to data and qualitatively describes many particle ratios despite challenges with the non-strange p/pi ratio and specific spectral shapes.

Javira Altmann, Lorenzo Bernardinis, Peter Skands, Valentina Zaccolo2026-03-02
⚛️ phenomenology

Full Three-Loop Electroweak Multiplet Contributions to the Electron Electric Dipole Moment

This paper presents a full three-loop calculation of the electron electric dipole moment induced by CP-violating Yukawa interactions of SU(2)L_L multiplets, revealing that the total contribution is three times larger than the previously estimated value derived solely from the electroweak-Weinberg operator.

Tatsuya Banno, Junji Hisano, Teppei Kitahara, Kiyoto Ogawa, Naohiro Osamura2026-03-02
⚛️ high-energy experiments

Extracting a Toponium Signal at the LHC with Spin and Quantum Information Tools

This paper demonstrates that reconstructing spin density matrices via quantum tomography and analyzing quantum information-inspired observables for near-threshold top-antitop production at the LHC significantly enhances the sensitivity to detect subtle toponium formation effects.

Laura Antozzi, Esteban Chalbaud, Frédéric Déliot, Federica Fabbri, Miguel C. N. Fiolhais, Benjamin Fuks, António Onofre (…)2026-03-02