3231 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 presents a study demonstrating that the Future Circular Collider electron-positron (FCCee) operating at with an integrated luminosity of 10.8 ab could achieve a 95% confidence level upper limit of 0.15% on the branching ratio of invisible Higgs decays by analyzing the $ZH$ production mode with boson decays into electron-positron, muon-antimuon, and hadronic jets.
This paper establishes that the trace of the spin correlation matrix is a basis-invariant quantity for two-fermion production via single mediator exchange at lepton colliders, enabling the determination of spin-analyzing powers, the reconstruction of spin correlations to probe Bell non-locality (specifically in production at BESIII), and the exploration of new physics beyond the Standard Model.
This paper proposes a novel search strategy at the LHC for light scalars in the Type-I 2HDM by targeting electroweak production of boosted light scalars in association with heavy pseudoscalars or charged Higgs bosons, demonstrating that reconstructing boosted double- fat-jets alongside a SM gauge boson can effectively probe hierarchical scalar spectra and exclude heavy scalar masses up to GeV at the HL-LHC.
This paper determines pion parton distribution functions using light-front holography and the 't Hooft equation, then successfully applies them to calculate next-to-leading order cross sections for inclusive production in pion-nucleus collisions that align well with experimental data.
This paper challenges the conventional reliability of Post-Newtonian effective theory in weak-field regimes by demonstrating that non-integrability and angular-momentum exchange in many-body systems can cause breakdowns in power counting, offering a new systematic framework for mass inference that may resolve the dark matter puzzle without invoking new particles.
This paper proposes a model-independent dark photon search strategy using spectral shape differences in photon production from decays, demonstrating via GEANT4 simulations that a 1 GeV proton beam with tungsten foils could probe previously unexplored parameter space for dark photons with predominantly invisible decays.
This paper utilizes Light Cone Sum Rules with twist-6 contributions to calculate the branching fraction of the decay, thereby determining the allowed mass range for the dark antibaryon consistent with -mesogenesis constraints from BaBar and Belle experimental data.
This paper generalizes the concept of a "beam-dump ceiling" that limits sensitivity improvements for fast-decaying mediators in traditional experiments and argues that compact, short-baseline tabletop experiments are the optimal solution to access this previously unreachable parameter space.
This paper uses semi-analytic modeling to predict that dark matter subhalos with masses between and are most likely to create observable gaps in GD-1-like stellar streams, typically occurring at a rate of three per Milky Way-like host with characteristic widths of 5–27 degrees and underdensities of 10–30%.
This paper presents a global analysis combining deep-inelastic scattering and heavy-ion collision data within a saturation-based QCD framework to constrain the early-time shear viscosity to entropy density ratio () of the quark-gluon plasma.