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

Semileptonic decay form factors of Ξb0→Ξc+ℓνˉℓ\Xi_b^0 \rightarrow \Xi_c^+\ell\bar{\nu}_{\ell} in HQET

This paper investigates the semileptonic decay Ξb0→Ξc+ℓνˉℓ\Xi_b^0 \rightarrow \Xi_c^+\ell\bar{\nu}_{\ell} using a phenomenological quark model combined with Heavy Quark Effective Theory to calculate form factors, decay rates, and the lepton flavor universality ratio, finding results consistent with existing theoretical predictions.

Kinjal Patel, Kaushal Thakkar2026-04-07
⚛️ phenomenology

Relativistic and Recoil Corrections to Light-Fermion Vacuum Polarization for Bound Systems of Spin-0, Spin-1/2, and Spin-1 Particles

This paper generalizes the calculation of relativistic and recoil corrections to light-fermion vacuum polarization for bound systems composed of spin-0, spin-1/2, and spin-1 particles, providing energy corrections of order α5mr\alpha^5 m_r for various systems including pionium, muonic hydrogen, and deuteronium.

G. S. Adkins, U. D. Jentschura2026-04-07
⚛️ high-energy theory

Is the w0waw_0w_aCDM cosmological parameterization evidence for dark energy dynamics partially caused by the excess smoothing of Planck PR4 CMB anisotropy data?

This paper investigates whether the Planck PR4 CMB data's mild preference for dynamical dark energy in the w0waw_0w_aCDM model is partially driven by residual excess smoothing in the anisotropy spectra, finding that while PR4 data reduce the CMB lensing anomaly compared to PR3, the observed evidence for evolving dark energy may still be influenced by these residual smoothing effects.

Chan-Gyung Park, Javier de Cruz Perez, Bharat Ratra2026-04-07
⚛️ nuclear theory

Anisotropic Flow of light (anti-)(hyper-)nuclei in Pb+Pb Collision at sNN=5.36\sqrt{s_{NN}}=5.36 TeV

Using a coalescence model coupled with the MUSIC hybrid framework, this study investigates the elliptic and triangular flow of light (anti-)(hyper-)nuclei in Pb+Pb collisions at 5.36 TeV, revealing the breakdown of simple constituent scaling at high transverse momentum, the insensitivity of hypertriton flow to internal structure, and providing predictions for comparison with ALICE experimental data.

Fu Ma, Zheng-Qing Wang, Xiong-Hong He, Che Ming Ko, Qi-Ye Shou, Kai-Jia Sun, Wenbin Zhao, Wen-Hao Zhou2026-04-07
⚛️ nuclear theory

Heavy and heavy-light tensor and axial-tensor mesons in the Covariant Spectator Theory

This paper presents the first calculation of tensor and axial-tensor mesons with total spin J≥2J\geq2 within the Covariant Spectator Theory, utilizing a refined quark-antiquark interaction kernel with momentum-dependent strong coupling to successfully describe the mass spectrum of heavy and heavy-light mesons using only eight adjustable parameters.

Elmar P. Biernat, Alfred Stadler2026-04-07
⚛️ nuclear theory

Disentangling Flow Contributions from the Chiral Magnetic Effect in U+U Collisions with Forward-Backward Multiplicity Asymmetry

This paper proposes using forward-backward multiplicity asymmetry (FBMA) in uranium-uranium collisions as a robust control parameter to effectively disentangle the Chiral Magnetic Effect signal from flow-induced backgrounds by leveraging the correlation between FBMA and initial-state geometry while largely decoupling it from magnetic field correlations.

Kaiser Shafi, Sandeep Chatterjee2026-04-07