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.

Is the $w_0w_a$ CDM 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 $w_0w_a$ CDM 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⚛️ hep-th

Reality-constrained Minimal Yukawa Structure in SO(10) GUT

This paper revises the minimal real SO(10) Yukawa sector by correcting reality constraints on weak doublets, thereby establishing a general framework that successfully reproduces all Standard Model fermion masses and mixings while predicting a hierarchical right-handed neutrino spectrum and testable proton decay channels.

Shaikh Saad, Vasja Susič2026-04-07⚛️ hep-ph

Anisotropic Flow of light (anti-)(hyper-)nuclei in Pb+Pb Collision at $\sqrt{s_{NN}}=5.36$ 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⚛️ nucl-th

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 $J\geq2$ 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⚛️ nucl-th

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⚛️ nucl-th

Temperature Effects on a Vector Hidden-Charm Molecule

Using thermal QCD sum rules, this study predicts that the $Y(4500)$ vector hidden-charm molecule, modeled as a $D_s \bar{D}_{s1}$ state, undergoes significant mass reduction and decay constant suppression near the deconfinement temperature, signaling its dissociation into the quark-gluon plasma.

E. Güngör, H. Sundu, J. Y. Süngü, E. Veli Veliev2026-04-07⚛️ hep-ph

Causality, the Kovtun-Son-Starinets bound, and a novel sum rule for spectral densities

This paper demonstrates that the universality of the shear viscosity to entropy density ratio in Unruh radiation is fundamentally linked to causality, establishes a saturation of the bulk viscosity bound, and derives a novel sum rule for spectral densities that connects thermal isotropy in Rindler space to the validity of Pascal's law.

G. Yu. Prokhorov, O. V. Teryaev2026-04-07⚛️ hep-th

Information-Geometric Perspective on the Hubble Tension: Eigenmode Rotation and Curvature Suppression in wCDM

This paper analyzes the Hubble tension within the wCDM model using an information-geometric framework, revealing that the apparent relief in tension arises not from new physical agreement but from a geometric reconfiguration where varying the dark energy equation of state suppresses Planck's constraint curvature while DESI DR2 data introduces a stiff geometric wall that limits tension relief.

Seokcheon Lee2026-04-07⚛️ hep-ph

Lattice studies of chimera baryons in Sp(4) gauge theory

This paper presents non-perturbative lattice calculations of the low-lying spectrum and matrix elements of chimera baryons within a Sp(4) gauge theory, a key component of composite Higgs models, utilizing both quenched and dynamical fermion approximations.

Jong-Wan Lee, Ed Bennett, Luigi Del Debbio, Niccolò Forzano, Ryan C. Hill, Deog Ki Hong, Ho Hsiao, C. -J. David Lin, Biagio Lucini, Alessandro Lupo, Maurizio Piai, Davide Vadacchino, Fabian Zierler2026-04-07⚛️ hep-lat

Dissipative spin hydrodynamics in Bjorken flow and thermal dilepton production

This paper investigates boost-invariant spin hydrodynamics with a first-order framework, demonstrating that spin dissipation alters the temperature evolution of the expanding medium and subsequently enhances thermal dilepton production, thereby suggesting dileptons as a viable probe for spin dynamics in the quark-gluon plasma.

Sejal Singh, Sourav Dey, Arpan Das, Hiranmaya Mishra, Amaresh Jaiswal2026-04-07⚛️ nucl-th

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hep-ph

Is the w0waw_0w_aw0​wa​CDM cosmological parameterization evidence for dark energy dynamics partially caused by the excess smoothing of Planck PR4 CMB anisotropy data?