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.

⚛️ phenomenology

Absence of Quadratic-Order Sensitivity to Small Neutrino Mass Splittings in Disappearance Measurements

This paper demonstrates that in neutrino disappearance experiments using binned energy spectra, small mass-squared splittings become unidentifiable at quadratic order because the resulting smooth spectral distortions are absorbed by profiled nuisance parameters representing systematic uncertainties, thereby suppressing sensitivity until higher-order oscillation effects or constrained systematic models become relevant.

Sanjeev Kumar Verma2026-03-31

⚛️ high-energy experiments

Central multiplicity distributions in the multi-channel eikonal model

This paper calculates the central charged particle multiplicity distribution using a multi-channel eikonal model with AGK cutting rules, compares the results with ATLAS data at 7 and 13 TeV, and discusses the implications of color reconnection and string percolation.

E. G. S. Luna, M. G. Ryskin2026-03-31

⚛️ phenomenology

Implications of the muon anomalous magnetic moment in a Doublet Left-Right Symmetric Model

This paper computes the complete one-loop contributions to the muon anomalous magnetic moment in a Doublet Left-Right Symmetric Model with inverse seesaw neutrino masses, deriving lower bounds on the masses of new gauge bosons and heavy neutrinos by imposing experimental constraints on the muon $(g-2)$ .

M. Zeleny-Mora, R. Gaitán-Lozano, R. Martinez2026-03-31

⚛️ phenomenology

On the predictivity of axion dark matter in the presence of Peccei-Quinn breaking

This paper demonstrates that small explicit Peccei-Quinn symmetry breaking can render post-inflationary QCD axion dark matter unpredictable by introducing a new mass scale that alters the axion string-wall network dynamics and relic abundance before the QCD transition.

Michael Zantedeschi2026-03-31

⚛️ phenomenology

$f_0(980)$ production from $K\bar{K}$ coalescence in pp collisions at $\sqrt{s}=5.02$ TeV within UrQMD

This paper utilizes the UrQMD transport model with a $K\bar{K}$ coalescence afterburner to demonstrate that the production of $f_0(980)$ mesons in proton-proton collisions at $\sqrt{s}=5.02$ TeV is reasonably described by a late-stage molecular formation mechanism near kinetic freeze-out, achieving optimal agreement with ALICE data using a coalescence momentum parameter of approximately 0.365 GeV/ $c$ .

Phacharatouch Chaimongkon, Krittaporn Anukulkitch, Pornrad Srisawad, Natthaphat Thongyoo, Sukanya Sombun, Ayut Limphirat (…)2026-03-31

⚛️ high-energy experiments

Observation of $\Lambda^+_c\to n\pi^+\eta$ and search for $\Lambda^+_c\to na_0(980)^+$

Using 6.1 fb $^{-1}$ of data from the BESIII detector, this study reports the first observation of the decay $\Lambda_c^+\to n\pi^+\eta$ with a significance of $9.5\sigma$ , measures its branching fraction relative to $\Lambda_c^+\to \Lambda\pi^+\eta$ , and sets an upper limit on the intermediate process $\Lambda_c^+\to na_0(980)^+$ while employing a Transformer-based deep learning approach for background suppression.

BESIII Collaboration, M. Ablikim, M. N. Achasov, P. Adlarson, X. C. Ai, C. S. Akondi, R. Aliberti, A. Amoroso, Q. An, Y. (…)2026-03-31

⚛️ phenomenology

Phenomenology developments in UPC: $\gamma \gamma \to \gamma \gamma$ scattering

This paper proposes extending the study of $\gamma \gamma \to \gamma \gamma$ scattering in ultraperipheral heavy ion collisions to lower invariant masses and inelastic processes involving individual nucleons, while also calculating cross sections for associated neutron production and single photon production to guide future investigations with detectors like FOCAL and ALICE 3.

Paweł Jucha, Antoni Szczurek2026-03-31

⚛️ phenomenology

Missing energy signatures of inelastic magnetic dipole DM at NA64e

This paper calculates the production rate and projected sensitivity of the NA64e experiment at CERN to inelastic magnetic dipole dark matter pairs, demonstrating that including heavy vector meson decays alongside bremsstrahlung-like emission enables the probe of previously unexplored parameter spaces for light masses and modest mass splittings.

Sergei N. Gninenko, N. V. Krasnikov, I. V. Voronchikhin, D. V. Kirpichnikov2026-03-31

⚛️ high-energy experiments

Exclusive Hadron Observables in Neutrino Induced $2p2h$ Multinucleon Knockout

This paper investigates exclusive hadron observables in neutrino-induced $2p2h$ multinucleon knockout by comparing kinematic variables from the Valencia model with current event generator treatments and nuclear re-scattering effects, while assessing their detectability in present and future long-baseline neutrino experiments.

Vedantha Srinivas Kasturi, Juan Nieves, Federico Sánchez, Joanna Ewa Sobczyk2026-03-31

⚛️ nuclear theory

Combined analysis of the data on cross sections and spin density matrix elements for $K^*\Sigma$ photoproduction reactions

This paper extends a previous analysis of $K^*\Sigma$ photoproduction by incorporating LEPS spin density matrix element data to constrain the theoretical model, revealing that while the $\Delta(1905)5/2^+$ resonance is essential, the role of $t$ -channel $\kappa$ exchange is ambiguous and contradicts earlier claims of its dominance.

Aai-Chao Wang, Neng-Chang Wei, Fei Huang2026-03-31

← Previous Next →

hep-ph

Absence of Quadratic-Order Sensitivity to Small Neutrino Mass Splittings in Disappearance Measurements

Central multiplicity distributions in the multi-channel eikonal model

Implications of the muon anomalous magnetic moment in a Doublet Left-Right Symmetric Model

On the predictivity of axion dark matter in the presence of Peccei-Quinn breaking

f0(980)f_0(980)f0​(980) production from KKˉK\bar{K}KKˉ coalescence in pp collisions at s=5.02\sqrt{s}=5.02s​=5.02 TeV within UrQMD

Observation of Λc+→nπ+η\Lambda^+_c\to n\pi^+\etaΛc+​→nπ+η and search for Λc+→na0(980)+\Lambda^+_c\to na_0(980)^+Λc+​→na0​(980)+

Phenomenology developments in UPC: γγ→γγ\gamma \gamma \to \gamma \gammaγγ→γγ scattering

Missing energy signatures of inelastic magnetic dipole DM at NA64e

Exclusive Hadron Observables in Neutrino Induced 2p2h2p2h2p2h Multinucleon Knockout

Combined analysis of the data on cross sections and spin density matrix elements for K∗ΣK^*\SigmaK∗Σ photoproduction reactions

$f_0(980)$ production from $K\bar{K}$ coalescence in pp collisions at $\sqrt{s}=5.02$ TeV within UrQMD

Observation of $\Lambda^+_c\to n\pi^+\eta$ and search for $\Lambda^+_c\to na_0(980)^+$

Phenomenology developments in UPC: $\gamma \gamma \to \gamma \gamma$ scattering

Exclusive Hadron Observables in Neutrino Induced $2p2h$ Multinucleon Knockout

Combined analysis of the data on cross sections and spin density matrix elements for $K^*\Sigma$ photoproduction reactions