3153 papers
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.
This paper distinguishes ghosts from unstable particles in quantum field theory by analyzing their differing analytic structures and temporal behaviors, demonstrating that while ghosts survive asymptotically without decaying, they lack a particle interpretation due to multi-particle interference, thereby supporting the conclusion that freely propagating ghost particles do not exist in the asymptotic limit.
This paper introduces a domain-agnostic, context-aware stress testing pipeline to evaluate the robustness of fast reconstruction models in fields like High Energy Physics, demonstrating that while local assumptions can fail to capture global dependencies (as seen in HL-LHC decays), an unsupervised regime-mapping framework can effectively restore reconstruction accuracy and resolution.
This paper proposes the "Coherence Principle," a falsifiable Bayesian framework for model selection that assigns prior probabilities based on a model's adherence to the validated structural "grammar" of existing theories, thereby penalizing unmotivated theoretical violations while remaining transparent and testable across historical and contemporary cases in physics.
This study utilizes the STARlight program and the two-gluon exchange model to analyze charmonium production in ultraperipheral PbPb and pPb collisions at LHC energies, introducing a phenomenological suppression factor to successfully reconcile theoretical predictions with experimental rapidity and transverse momentum distributions in PbPb collisions while confirming the model's validity for future UPC studies.
This paper systematically investigates semi-invisible hyperon decays within the Mesogenesis mechanism using an effective Lagrangian approach, revealing that one-loop hadronic triangle diagram contributions are as significant as tree-level terms and result in branching ratios of order for hadronic modes while radiative modes remain below .
This paper proposes a dynamical mechanism where a new scalar field induces a transient bias to trigger the decay of CP domain walls formed by spontaneous CP violation, thereby resolving the associated cosmological constraint while simultaneously providing a dark matter candidate through the field's coherent oscillations.
This paper presents a comprehensive spin density matrix analysis of polarization transfer in polarized collisions producing decays into octet baryon-antibaryon pairs, confirming theoretical predictions for angular distributions and demonstrating how longitudinal beam polarization at future facilities like the STCF can serve as a new experimental tool to test decay mechanisms and explore baryonic spin entanglement.
By combining DESI DR2 clustering data with NuFIT oscillation results, this study demonstrates that cosmological evidence has transitioned from prior sensitivity to decisive, likelihood-dominated exclusion of the inverted neutrino mass hierarchy, strongly favoring the normal ordering and predicting an effective Majorana mass in the few-meV regime.
This study demonstrates that the Early Dark Energy model, when constrained by a combination of Planck, ACT, SPT, DESI, and JWST data, successfully alleviates the Hubble tension to the level while providing a statistically superior fit to high-redshift galaxy observations compared to the standard CDM model.
This paper investigates the dynamics of first-order inverse phase transitions in the Witten-Sakai-Sugimoto holographic model by computing Euclidean bounce solutions to determine bubble nucleation rates and estimating bubble wall velocities for both deconfinement and chiral symmetry-restoring transitions.