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

Baryon-number-violating nucleon decays in SMEFT extended with a light scalar

This paper systematically investigates baryon-number-violating nucleon decays involving a light scalar within the Standard Model Effective Field Theory framework, deriving stringent constraints from experimental data, predicting distinctive three-body decay signatures and dinucleon transitions, and proposing ultraviolet-complete models to explain the underlying physics.

Xiao-Dong Ma, Michael A. Schmidt, Weihang Zhang2026-02-19
⚛️ phenomenology

Defect Formation in NaI Crystals: A Novel Pathway to Dark Matter Detection

This study utilizes molecular dynamics and density functional theory to investigate defect formation in NaI crystals induced by dark matter collisions, proposing that the resulting new electronic states within the band gap could serve as a novel detection channel for dark matter searches.

G. Angloher, M. R. Bharadwaj, A. Böhmer, M. Cababie, I. Colantoni, I. Dafinei, N. Di Marco, C. Dittmar, F. Ferella, F. F (…)2026-02-19
⚛️ general relativity

A Universal CMB BB-Mode Spectrum from Early Causal Tensor Sources

This paper proposes a unified framework demonstrating that early causal tensor sources, such as phase transitions and topological defects, generate a universal k3k^3 tensor power spectrum that produces a distinct, small-scale-enhanced BB-mode signature in the cosmic microwave background, differentiating them from the scale-invariant predictions of inflation.

Kylar Greene, Aurora Ireland, Gordan Krnjaic, Yuhsin Tsai2026-02-19
⚛️ phenomenology

Towards the inclusion of NLO EW corrections in the MiNLO method in Drell-Yan processes

This paper presents the first application of the MiNLO method to QED NLO corrections in Drell-Yan processes, specifically addressing initial-state radiation for Z boson decays into neutrinos, proposing a modified formula to handle QED-specific challenges, and quantifying uncertainties as a foundational step toward integrating full electroweak effects into the MiNNLOPS framework.

Filippo Belloni, Mauro Chiesa, Carlo Oleari, Emanuele Re2026-02-19
⚛️ high-energy experiments

Is the Standard Model Effective Field Theory Enough for Higgs Pair Production?

This paper evaluates the validity of the Standard Model Effective Field Theory (SMEFT) versus the Higgs Effective Field Theory (HEFT) for Higgs pair production by comparing their predictions against "Loryon"-inspired UV-complete models, demonstrating that HEFT can offer a more accurate description than SMEFT in specific parameter regimes and highlighting di-Higgs measurements as a probe for non-linear electroweak dynamics.

Íñigo Asiáin, Ramona Gröber, Lorenzo Tiberi2026-02-19
⚛️ high-energy experiments

Quasi-two-body decays B+Ds+(R)K+KB^+\to D_s^+ (R\to) K^+K^- in the perturbative QCD approach

This paper presents the first perturbative QCD predictions for the branching fractions and direct CP asymmetries of the quasi-two-body decays B+Ds+(R)K+KB^+\to D_s^+(R\to)K^+K^- involving various SS-, PP-, and DD-wave resonances, finding results consistent with existing data and predicting vanishing CP asymmetries within the Standard Model.

Zhi-Tian Zou, Jun-Peng Wang, Zhou Rui, Ying Li2026-02-19