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

New Directions in Kaon Physics: Interference in K0→μ+μ−K^0\to\mu^+\mu^- as a New Golden Mode

This paper proposes that analyzing KL0K_L^0–KS0K_S^0 interference in the rare decay K0→μ+μ−K^0 \to \mu^+\mu^- transforms the channel into a clean probe of short-distance CPCP violation, enabling LHCb to constrain the CKM parameter ∣A2λ5ηˉ∣|A^2\lambda^5\bar\eta| to within 35% of its Standard Model value and resolve the sign ambiguity of the KL0→γγK_L^0 \to \gamma\gamma amplitude with over 3σ\sigma significance by the high-luminosity LHC era.

Teppei Kitahara2026-05-05
⚛️ phenomenology

Transverse momentum dependence of Ω/ϕ\Omega/\phi ratio in high energy collisions

This paper utilizes a constituent quark equal-velocity combination model to demonstrate that the transverse momentum dependence of the Ω/ϕ\Omega/\phi ratio in high-energy collisions is governed by the discrete curvature of the strange quark pTp_T spectrum just before hadronization, a feature attributed to strong collective flow in the partonic stage.

Hai-hong Li, Jun Song, Feng-lan Shao2026-05-05
⚛️ nuclear theory

Relativistic BDNK MHD Evolution in a Boost-Invariant Medium and Its Impact on Dilepton Production

This paper presents a causal and stable first-order relativistic BDNK magnetohydrodynamic framework in a boost-invariant background, revealing that magnetic fields respond strongly to temperature evolution while their feedback remains subleading, ultimately leading to a suppression of the low-mass dilepton spectrum due to enhanced cooling.

Ankit Kumar Panda, Rajesh Biswas2026-05-05
⚛️ phenomenology

Hunting for BBˉB\bar B molecular state Xb0X_{b0} via radiative transition of Υ(10753)\Upsilon(10753)

This paper investigates the radiative decay Υ(10753)→γXb0\Upsilon(10753) \to \gamma X_{b0} within nonrelativistic effective field theory, predicting a branching fraction of 10−6−10−510^{-6}-10^{-5} dominated by B1(′)B_1^{(\prime)} meson loops and suggesting this channel as a promising avenue for discovering the BBˉB\bar{B} molecular state Xb0X_{b0}.

Yuan-Jun Gao, Gang Li, Shi-Dong Liu, Qi Wu2026-05-05
⚛️ phenomenology

Collins asymmetries for pion-in-jet production in polarized ℓp\ell p collisions at the EIC

This paper investigates Collins azimuthal asymmetries in pion-in-jet production within polarized lepton-proton collisions at the Electron-Ion Collider using a simplified TMD approach, demonstrating that these processes offer a theoretically cleaner and more direct probe of the transversity distribution and its sea-quark components compared to polarized proton-proton scattering, thereby providing a crucial test for the universality of the Collins function and TMD factorization.

Umberto D'Alesio, Carlo Flore, Marco Zaccheddu2026-05-05
⚛️ phenomenology

Electron EDM and Γ(μ→eγ)\Gamma(\mu \to e \gamma) in the 2HDM

This paper presents the first complete two-loop calculation of the electron electric dipole moment and lepton-flavor violating decay rates within the unconstrained two-Higgs doublet model, incorporating general Yukawa interactions and Higgs potential phases, with results made available through a public Python implementation.

Wolfgang Altmannshofer, Benoît Assi, Joachim Brod, Nick Hamer, J. Julio, Patipan Uttayarat, Daniil Volkov2026-05-04