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.

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⚛️ hep-ph

Exclusive Hadron Observables in Neutrino Induced 2p2h2p2h Multinucleon Knockout

This paper investigates exclusive hadron observables in neutrino-induced 2p2h2p2h 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⚛️ hep-ex

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

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

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

Heavy-Flavor Fragmentation from HF-NRevo: Status, Prospects, and Intrinsic Charm

This paper reports on the development and application of the HF-NRevo framework, which provides a consistent perturbative description of heavy-flavor fragmentation for SS-wave quarkonia and fully heavy tetraquarks, enabling new investigations into medium effects in heavy-ion collisions and the intrinsic charm content of the proton at future collider facilities.

Francesco Giovanni Celiberto, Francesca Lonigro2026-03-31⚛️ nucl-ex

Bag Parameters for Heavy Meson Lifetimes

This paper presents the first lattice-QCD determination of dimension-six ΔQ=0\Delta Q=0 four-quark matrix elements for heavy-meson lifetime ratios using gradient flow renormalization on 2+1-flavor domain-wall fermion ensembles, achieving NNLO matching to the MS\overline{\text{MS}} scheme and providing precise bag parameters with a full error budget.

Matthew Black, Robert V. Harlander, Jonas T. Kohnen, Fabian Lange, Antonio Rago, Andrea Shindler, Oliver Witzel2026-03-31⚛️ hep-lat

Heavy-Meson Bag Parameters using Gradient Flow

This paper demonstrates that the gradient flow combined with short flow-time expansion (GF+SFTX) serves as an effective renormalization procedure for calculating precise MS\overline{\text{MS}} bag parameters of four-quark operators relevant to neutral heavy-meson mixing and lifetimes, successfully applying this method to six RBC/UKQCD domain-wall fermion ensembles to obtain results consistent with existing determinations while providing a robust framework for handling power-divergent mixing in future lattice computations.

Matthew Black, Robert V. Harlander, Jonas T. Kohnen, Fabian Lange, Antonio Rago, Andrea Shindler, Oliver Witzel2026-03-31⚛️ hep-lat

Quantized Dissipation from the Inverse-Square Anomaly in a Non-Hermitian Klein-Gordon Field

This paper presents an exactly solvable non-Hermitian Klein-Gordon model where an anomalous inverse-square potential, combined with outgoing boundary conditions, transforms the fall-to-the-center instability into a discrete, log-periodic spectrum of complex energies, thereby establishing a universal framework for quantized dissipation and emergent scale anomalies in relativistic open quantum systems.

Mansour Haghighat, Ali Nouri2026-03-31⚛️ hep-th

Removing the Cosmological Bound on the Axion Scale via Confinement During Inflation

This paper proposes that implementing early axion relaxation through high-scale confinement within an $SU(5)$ grand unified theory during inflation generates an early potential that dilutes the axion's energy density, thereby removing the cosmological upper bound on the axion decay constant and allowing it to serve as a viable dark matter candidate for arbitrarily large values across all known axion models.

Gia Dvali, Sophia Fitz, Lucy Komisel2026-03-31⚛️ hep-ph