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.

⚛️ lattice

Prospects for KL→π0ννˉK_{L}\to\pi^{0}\nu\bar{\nu}, KS→μ+μ−K_S\to\mu^+\mu^-, KL→π0ℓ+ℓ−K_L\to\pi^0 \ell^+\ell^- and ε′/ε\varepsilon^{\prime}/\varepsilon after the new K+→π+ννˉK^{+}\to\pi^{+}\nu\bar{\nu} result from NA62

This paper demonstrates that specific new physics scenarios, such as a Z′Z' model with large complex phases and right-handed couplings, can simultaneously enhance the branching ratios of KL→π0ννˉK_L\to\pi^0\nu\bar{\nu}, KS→μ+μ−K_S\to\mu^+\mu^-, and KL→π0ℓ+ℓ−K_L\to\pi^0\ell^+\ell^- while resolving the ε′/ε\varepsilon^{\prime}/\varepsilon anomaly, all without conflicting with the recent NA62 measurement of K+→π+ννˉK^{+}\to\pi^{+}\nu\bar{\nu} or the εK\varepsilon_K constraint.

Monika Blanke, Andrzej J. Buras, Cristina Lazzeroni, Joel C. Swallow2026-07-22
⚛️ high-energy theory

Holographic Soliton Crystals for Dense Nuclear Matter and Neutron Stars

This paper constructs a nuclear-matter equation of state for neutron stars using a holographic Witten-Sakai-Sugimoto model with a face-centered cubic soliton crystal approximation, which successfully reproduces saturation properties and NICER-compatible observables while correcting the deficiencies of previous homogeneous approximations.

Lorenzo Bartolini, Sven Bjarke Gudnason, Jonas Mager, Anton Rebhan2026-07-22
⚛️ phenomenology

Flavor-Dependent QCD Critical Endpoint and Dual-Channel Fluctuations from Multi-Charge Holography

This paper presents a thermodynamically consistent holographic QCD model with multiple conserved charges that predicts a flavor-dependent critical endpoint and coherent dual-channel cumulant peaks at sNN≈5–7 GeV\sqrt{s_{NN}} \approx 5\text{--}7\,\text{GeV}, offering a robust strategy for the experimental search of the QCD critical point.

Zhibin Li, Danning Li, Mei Huang2026-07-22
⚛️ phenomenology

Full Next-To Leading-Order Electroweak and QCD Corrections to the Relic Density in the CxSM

This paper presents the first calculation of next-to-leading-order QCD and electroweak corrections to the Dark Matter relic density within the complex singlet extended Standard Model (CxSM), demonstrating that these corrections can significantly alter exclusion limits and are implemented in the publicly available code RelExt@NLO.

Pavao Brica, Karim Elyaouti, Pedro Gabriel, Margarete Mühlleitner, Rui Santos2026-07-22
⚛️ high-energy experiments

Integral representation of the neutrino mass-squared differences

This paper proposes a novel integral representation for neutrino mass-squared differences to derive stringent analytical bounds on the absolute neutrino mass scale and effective masses, yielding a competitive upper limit of m1<0.0023m_1 < 0.0023 eV under cosmological constraints and demonstrating how Gatto-Sartori-Tonin type relations naturally emerge from this framework.

I. Alikhanov2026-07-22
⚛️ phenomenology

Opening up New Parameter Space for Sterile Neutrino Dark Matter

This paper proposes a novel mechanism for producing sterile neutrino dark matter via scalar-mediated active-sterile interactions, which bypasses the need for active-sterile mixing, resonances, or lepton asymmetry, thereby opening new testable parameter space that resolves tensions with existing astrophysical constraints.

P. S. Bhupal Dev, Bhaskar Dutta, Srubabati Goswami, Jianrong Paul Tang, Aaroodd Ujjayini Ramachandran2026-07-21