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.

Updated observational constraints on $\phi$ CDM dynamical dark energy cosmological models

This paper presents updated observational constraints on the spatially flat $\phi$ CDM dynamical dark energy model using Planck 2018 and non-CMB data, finding that while the standard $\Lambda$ CDM model remains an excellent fit, current data mildly favor evolving quintessence-like dark energy and reveal tensions in the Hubble constant and CMB lensing amplitude that are partially alleviated by allowing the lensing consistency parameter $A_L$ to vary.

Chan-Gyung Park, Bharat Ratra2026-06-12⚛️ hep-ph

How to Build an Empirical Speed Distribution for Dark Matter in the Solar Neighborhood

This paper proposes and validates a method to reconstruct the local dark matter speed distribution by combining a Maxwell-Boltzmann component for old merger debris with a kinematically boosted stellar tracer for recent massive mergers, demonstrating its application to the Milky Way using Gaia data.

Tal Shpigel, Dylan Folsom, Mariangela Lisanti, Lina Necib, Mark Vogelsberger, Lars Hernquist2026-06-12⚛️ hep-ph

Future Collider Perspectives on Higgs CP Violation

This paper presents a comprehensive analysis demonstrating that future electron-positron and proton-proton colliders offer an order-of-magnitude improvement in sensitivity to anomalous CP-violating interactions in the gauge-Higgs sector compared to the high-luminosity LHC, thereby providing crucial insights into new physics sources for the observed matter-antimatter asymmetry.

Arun Atwal, Jessica Burridge, António Jacques Costa, Christoph Englert, Sinead Farrington, Jay Nesbitt, Leonor Santos Pereira Trigo, Andrew Pilkington, Aidan Robson, Júlia Cardoso Silva, Sarah William (…)2026-06-12⚛️ hep-ex

How to identify the dead cone in the top-quark jet

This paper proposes and validates a method using Pythia 8.3 simulations to isolate the top-quark dead cone effect in $t \to b\ell\nu$ decays by extrapolating hadronic momentum distributions to the forward direction, thereby successfully separating primary top radiation from secondary $b$ -quark radiation to test perturbative QCD in a new kinematic regime.

Stefan Kluth, Wolfgang Ochs, Redamy Perez-Ramos2026-06-12⚛️ hep-ex

The Dead Cone Effect in Heavy-Quark Jets: A Unified Study from Charm and Bottom to Top

This paper presents a unified framework for studying the QCD dead-cone effect across charm, bottom, and top quark jets by combining precision LEP data with Monte Carlo simulations to validate momentum-space suppression in lighter heavy quarks and proposing a novel method to isolate the dead cone in top-quark jets despite finite lifetime and decay radiation challenges.

Redamy Perez-Ramos, Stefan Kluth, Wolfgang Ochs2026-06-12⚛️ hep-ex

Black Hole Radiation Sparsity and Bekenstein Entropy Loss in Non-Commutative Schwarzschild Spacetime

This paper investigates the thermodynamics of a Schwarzschild black hole within non-commutative gauge theory, demonstrating that non-commutative corrections remove temperature divergence, introduce logarithmic entropy corrections, and result in extremely sparse Hawking radiation that diverges as the black hole approaches the final stage of evaporation.

Abdellah Touati2026-06-12⚛️ gr-qc

Vacuum photon emission and mean electromagnetic field in pair-creating external backgrounds

This paper develops a perturbative real-time framework using the Keldysh-Schwinger-Fradkin technique to derive the mean number density of emitted photons and the mean electromagnetic field in unstable QED vacua subjected to pair-creating external backgrounds, extending calculations up to second order in the fine-structure constant and verifying results through spectral decomposition and Schwinger-Dyson equations.

I. A. Aleksandrov, E. V. Perelygin, D. V. Chubukov2026-06-12⚛️ hep-th

Tachyonic Encore: A universal shift of inflationary observables

This paper proposes a generic mechanism where a light axion spectator induces a post-inflationary "tachyonic encore" that reshapes inflationary observables by enhancing the curvature power spectrum and suppressing the tensor-to-scalar ratio, thereby reconciling otherwise disfavored inflaton potentials with current CMB constraints while predicting observable local non-Gaussianity.

Diogo S. Gorgulho, Margherita Putti, Rodrigo Gonzalez Quaglia, Ema Dimastrogiovanni, Matteo Fasiello, Diederik Roest2026-06-12⚛️ hep-th

Are Primordial Black Holes a Natural Dark Matter Candidate?

This paper challenges the prevailing view that Primordial Black Holes (PBHs) are generically fine-tuned dark matter candidates by demonstrating that, when evaluated across a broad landscape of production mechanisms and compared to particle dark matter benchmarks using uniform naturalness measures, PBHs span a full spectrum of naturalness tiers ranging from as natural as standard WIMPs to severely tuned, thereby proving that dismissing them as a whole conflates worst-case scenarios with a diverse landscape of viable models.

Stefano Profumo2026-06-12⚛️ hep-ph

SIDM and CDM interpretations of the million-solar-mass lensing perturber JVAS B1938+666- $\mathcal{V}$

This paper proposes that the unusually dense $10^6\,M_\odot$ lensing perturber in JVAS B1938+666 is naturally explained by a self-interacting dark matter halo in a core-collapse phase, whereas a cold dark matter interpretation would require a highly fine-tuned scenario involving a tidally stripped intermediate-mass black hole.

Xingyu Zhang, Hai-Bo Yu2026-06-12⚛️ hep-ph

hep-ph

Updated observational constraints on ϕ\phiϕCDM dynamical dark energy cosmological models