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

D0D^0--Ds+D_s^+ elliptic-flow splitting from sequential hadronization in O--O collisions at sNN=5.36\sqrt{s_{NN}} = 5.36 TeV

This paper predicts that sequential hadronization, where Ds+D_s^+ mesons form later than D0D^0 mesons, reproduces the observed elliptic-flow splitting in O--O collisions at sNN=5.36\sqrt{s_{NN}} = 5.36 TeV and establishes this splitting as a universal chronometer for the quark-gluon plasma's hadronization timeline.

Hui Du, Xiao-Wei Hao, Wei Dai, Jiaxing Zhao, Ben-Wei Zhang, Enke Wang2026-05-21
⚛️ lattice

Impact of Hadronic Resonances on B→K(∗)τ+τ−B\to K^{(*)}\tau^+\tau^- decays

This paper proposes a data-driven strategy to predict B→K(∗)τ+τ−B\to K^{(*)}\tau^+\tau^- decays by explicitly incorporating hadronic resonance contributions, such as those from ψ(2S)\psi(2S), rather than avoiding them, thereby enabling the use of hadron-collider data and enhancing sensitivity to large New Physics effects across the full kinematic spectrum.

Guillermo Baltà, Andreas Crivellin, Rafel Escribano, Joaquim Matias, Martín Novoa-Brunet2026-05-21
⚛️ high-energy experiments

Statistical sensitivity of neutrinoless double-beta decay exchange mechanism discrimination by tracking experiments

This paper demonstrates that tracking experiments can effectively discriminate between different neutrinoless double-beta decay exchange mechanisms with high statistical significance using only a few well-reconstructed events, even in the presence of realistic reconstruction uncertainties, thereby validating the continued pursuit of tracking detectors for discovery-class experiments.

Jason Detwiler, Ke Han, Tao Li2026-05-21
⚛️ phenomenology

Cosmological Collider Signatures from Right-Handed Neutrino Loop

This paper demonstrates that right-handed neutrino loops, interacting with the inflaton via a dimension-5 operator that induces an effective chemical potential, can significantly enhance cosmological collider signatures by softening heavy-mass suppression and amplifying oscillatory non-Gaussianities in the primordial three-point correlator.

Jingtao You, Linghao Song, Chengcheng Han, Hong-Jian He, Xingang Chen, Zhong-Zhi Xianyu2026-05-21
⚛️ high-energy experiments

Sensitivity of the FCC-ee to axion-like particles at different center-of-mass energies

This paper investigates the sensitivity of the proposed FCC-ee collider to axion-like particles (ALPs) coupling to electroweak gauge bosons across all planned center-of-mass energies, demonstrating that the facility can detect ALPs with couplings as low as a few 10−6GeV−110^{-6} \mathrm{GeV}^{-1} via the three-photon final state and potentially probe their electroweak structure for masses below the Z-boson mass.

Juliette Alimena, Elnura Bakhishova, Freya Blekman, Jannah Darwish Abdelhafiz, Christina Dorofeev, Jeremi Niedziela, Gia (…)2026-05-21
⚛️ high-energy experiments

CP violation in K→μ+μ−K\toμ^+μ^- with and without time dependence through a tagged analysis

This paper proposes a method to extract short-distance information and resolve discrete ambiguities in the Standard Model prediction for KL0→μ+μ−K^0_L \to \mu^+\mu^- by analyzing time-integrated and time-dependent CP asymmetries, demonstrating that an LHCb-like experiment could constrain the relevant short-distance amplitude to within 35% of its Standard Model value and resolve the ambiguity at over 3σ\sigma significance.

Giancarlo D'Ambrosio, Avital Dery, Yuval Grossman, Teppei Kitahara, Radoslav Marchevski, Diego Martínez Santos, Stefan S (…)2026-05-20