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.

CP violation in Kμ+μK\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 KL0μ+μK^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 Schacht2026-05-20⚛️ hep-ex

Primordial black holes versus their impersonators at gravitational wave observatories

This paper utilizes the Fisher matrix formalism to demonstrate that next-generation gravitational wave detectors, such as Cosmic Explorer and the Einstein Telescope, will be capable of distinguishing primordial black holes from exotic compact objects and neutron stars by detecting sub-solar masses out to redshifts of z3z \sim 3 and tidal effects up to z0.2z \sim 0.2.

Andrea Begnoni, Stefano Profumo2026-05-20⚛️ hep-ph

The Muonic Portal to Vector Dark Matter:connecting precision muon physics, cosmology, and colliders

This paper presents a comprehensive study of the Muonic Portal to Vector Dark Matter model, demonstrating its ability to simultaneously explain dark matter relic abundance and muon (g2)μ(g-2)_\mu anomalies through a novel velocity-suppression mechanism while establishing stringent collider bounds on vector-like muon masses and predicting distinctive multi-lepton signatures for future searches.

Alexander Belyaev, Luca Panizzi, Nakorn Thongyoi, Franz Wilhelm2026-05-20⚛️ hep-ph

On the reconstruction of kinematic distributions computed with Monte Carlo methods using orthogonal basis functions

This paper proposes and validates an alternative method for reconstructing one-dimensional kinematic distributions from high-dimensional Monte Carlo simulations by approximating them with weighted sums of orthogonal basis functions, which yields smooth results, eliminates bin-to-bin fluctuations, and allows for optimized basis construction using leading-order perturbative information.

Kirill Melnikov, Ivan Novikov, Ivan Pedron2026-05-20⚛️ hep-ph

Prospects for discovering strongly decaying doubly heavy TbcT_{bc} tetraquark states at LHCb

This paper evaluates the discovery potential of the JP=0+J^P=0^+ TbcT_{bc} tetraquark decaying into BD+B^- D^+ at LHCb, finding that a 5σ5\sigma observation is feasible during Run 4 for optimistic production cross sections but would require the full Run 5 dataset for more realistic estimates, while remaining unobservable under conservative scenarios.

Mingjie Feng, Yiming Li, Hua-Sheng Shao2026-05-20⚛️ hep-ph

The Majoron Cosmological Window: Dark Matter and Thermal Leptogenesis

This paper demonstrates that the minimal majoron framework can simultaneously explain neutrino masses, dark matter, and the matter-antimatter asymmetry by identifying a cosmologically viable parameter space where high-scale thermal leptogenesis constrains the majoron abundance and couplings, making the scenario testable by future X- and gamma-ray telescopes.

Arturo de Giorgi, Daniel Naredo-Tuero, Xavier Ponce Díaz2026-05-20⚛️ hep-ph

Flavor Conversion Enhances or Suppresses Supernova Explodability Independent of the Progenitor Mass

This study demonstrates through spherical core-collapse supernova simulations of various progenitor masses that flavor conversion can either enhance or suppress explosion success by altering neutrino heating efficiency, depending critically on whether the conversion occurs near the gain region or the neutrino decoupling region, regardless of the progenitor's mass or compactness.

Mariam Gogilashvili, Irene Tamborra2026-05-20🔭 astro-ph