5407 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 proposes and validates a method using Pythia 8.3 simulations to isolate the top-quark dead cone effect in decays by extrapolating hadronic momentum distributions to the forward direction, thereby successfully separating primary top radiation from secondary -quark radiation to test perturbative QCD in a new kinematic regime.
Using an improved AMPT model, this study demonstrates that the coalescence mechanism is essential for accurately reproducing the enhanced ratio observed in Au+Au collisions at RHIC, whereas fragmentation alone fails to capture this trend.
This paper presents a unified framework for studying the QCD dead-cone effect across charm, bottom, and top quark jets by combining precision LEP data with Monte Carlo simulations to validate momentum-space suppression in lighter heavy quarks and proposing a novel method to isolate the dead cone in top-quark jets despite finite lifetime and decay radiation challenges.
This paper investigates the thermodynamics of a Schwarzschild black hole within non-commutative gauge theory, demonstrating that non-commutative corrections remove temperature divergence, introduce logarithmic entropy corrections, and result in extremely sparse Hawking radiation that diverges as the black hole approaches the final stage of evaporation.
This paper develops a perturbative real-time framework using the Keldysh-Schwinger-Fradkin technique to derive the mean number density of emitted photons and the mean electromagnetic field in unstable QED vacua subjected to pair-creating external backgrounds, extending calculations up to second order in the fine-structure constant and verifying results through spectral decomposition and Schwinger-Dyson equations.
This paper proposes a generic mechanism where a light axion spectator induces a post-inflationary "tachyonic encore" that reshapes inflationary observables by enhancing the curvature power spectrum and suppressing the tensor-to-scalar ratio, thereby reconciling otherwise disfavored inflaton potentials with current CMB constraints while predicting observable local non-Gaussianity.
This paper challenges the prevailing view that Primordial Black Holes (PBHs) are generically fine-tuned dark matter candidates by demonstrating that, when evaluated across a broad landscape of production mechanisms and compared to particle dark matter benchmarks using uniform naturalness measures, PBHs span a full spectrum of naturalness tiers ranging from as natural as standard WIMPs to severely tuned, thereby proving that dismissing them as a whole conflates worst-case scenarios with a diverse landscape of viable models.
This paper proposes that the unusually dense lensing perturber in JVAS B1938+666 is naturally explained by a self-interacting dark matter halo in a core-collapse phase, whereas a cold dark matter interpretation would require a highly fine-tuned scenario involving a tidally stripped intermediate-mass black hole.
This paper utilizes QCD sum rules to analyze one-nucleon matrix elements of various axial and pseudoscalar currents, expressing their coupling constants in terms of quark and gluon operators and parton distribution moments while notably addressing the previously overlooked nucleon matrix element of the axial anomaly.
This paper introduces an inclusive generalised- jet algorithm for Deep Inelastic Scattering defined in the Breit frame, investigating its phenomenological applications for identifying the struck quark jet, assessing its sensitivity to non-perturbative effects, and comparing its performance with the Centauro algorithm.