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

Self-consistent computation of pair production from non-relativistic effective field theories in the Keldysh-Schwinger formalism

This paper employs non-relativistic effective field theory and the Keldysh-Schwinger formalism to self-consistently compute pair production and Sommerfeld-enhanced annihilation, demonstrating that this approach unitarizes the cross-section in a temperature-dependent manner while confirming vacuum results and revealing that bound states remain on-shell during out-of-equilibrium decay despite having Breit-Wigner spectral functions.

Tobias Binder, Edward Wang2026-04-14
⚛️ phenomenology

Photoproduction in general-purpose event generators

This paper systematically compares HERWIG, PYTHIA, and SHERPA event generators for jet photoproduction in e+e−e^+e^- and $ep$ collisions, finding that while all provide decent descriptions of LEP and HERA data, achieving precision predictions for the future EIC requires a global refit of photon parton distributions and dedicated measurements to constrain non-perturbative parameters.

Ilkka Helenius, Peter Meinzinger, Simon Plätzer, Peter Richardson2026-04-13
⚛️ phenomenology

A new method for estimating unknown one-order higher QCD corrections to the perturbative series using the linear regression through the origin

This paper proposes a novel method using linear regression through the origin on Principle of Maximum Conformality (PMC) scale-invariant series to reliably estimate unknown one-order higher QCD corrections, demonstrating its effectiveness and superior predictive stability through the application to the RτR_\tau ratio.

Zhi-Fei Wu, Xing-Gang Wu, Jiang Yan, Xu-Dong Huang, Jian-Ming Shen2026-04-13
⚛️ phenomenology

Interacting Scalar Fields as Dark Energy and Dark Matter in Einstein scalar Gauss Bonnet Gravity

This paper investigates two models of interacting scalar fields in Einstein scalar Gauss-Bonnet gravity as unified dark energy and dark matter candidates, demonstrating that while they align with current supernova data and the Λ\LambdaCDM model, they show a statistically significant preference over Λ\LambdaCDM when incorporating future Roman Space Telescope mock data at higher redshifts.

Saddam Hussain, Simran Arora, Yamuna Rana, Benjamin Rose, Anzhong Wang2026-04-13
⚛️ phenomenology

TeV Scale Quark-Lepton Unification

This paper proposes a TeV-scale quark-lepton symmetric Pati-Salam model featuring a softly broken Z2Z_2 symmetry that suppresses tree-level flavor violations, allowing a leptoquark gauge boson to be as light as 1.1 TeV (though LHC constraints on associated Z′Z' bosons push the limit to 4.3 TeV) while predicting distinctive signatures like vector-like down-type quarks with baryon number 2/32/3 and specific neutrino mass generation mechanisms.

K. S. Babu, Sumit Biswas, Shaikh Saad2026-04-13
⚛️ phenomenology

Neutral and charged pion Form Factors in the intermediate-energy region from double-dilaton HQCD model

Using a double-dilaton Holographic QCD model with a non-perturbative running strong coupling, this study computes neutral and charged pion form factors in the intermediate-energy region to explain experimental deviations from asymptotic behavior and demonstrate that non-perturbative effects persist at higher energy scales than previously thought.

Héctor Cancio, Pere Masjuan2026-04-13