5365 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 demonstrates that profiling parton distribution functions (PDFs) in high-mass Drell-Yan SMEFT analyses induces a strongly flavor-dependent degradation of sensitivity, with the most significant impacts occurring for operators involving first-generation quarks due to correlations with high- valence luminosities, while angular information offers a crucial handle to mitigate these degeneracies.
This paper proposes a universal seesaw framework extended by an Abelian gauge symmetry and vector-like fermions that naturally generates charged-fermion mass hierarchies, neutrino masses, and the CKM CP-violating phase while maintaining a zero QCD vacuum angle through a Nelson-Barr mechanism, with vector-like fermions potentially accessible at the TeV scale.
This paper investigates how collision-induced QED radiation affects Standard Model Effective Field Theory (SMEFT) constraints in deep-inelastic scattering, revealing that while cross sections undergo significant order-one corrections, longitudinal electron spin asymmetries remain robust at the few-percent level, thereby offering a more reliable observable for future precision studies at facilities like SoLID and the Electron-Ion Collider.
This paper presents the first comprehensive, model-independent study of Modular Littlest Seesaw models based on the finite modular group , identifying 35 phenomenologically viable breaking patterns that yield predictive correlations for neutrino masses, mixing parameters, and CP phases beyond the conventional TM paradigm.
This paper proposes that anomaly-free discrete symmetries in the MSSM not only resolve the -term and proton decay issues but also naturally regenerate the -term via the Kim-Nilles mechanism, inadvertently breaking a global symmetry to solve the strong CP problem with a DFSZ axion while providing dark matter candidates.
This paper demonstrates that an early matter-dominated epoch, through entropy injection from a decaying heavy field, significantly reduces the required interaction strength for fermionic dark matter with electromagnetic multipole moments to match observed relic abundances, thereby reviving parameter space regions that are otherwise excluded by direct detection and solar neutrino constraints in standard radiation-dominated cosmology.
This paper investigates a portal dark matter model featuring Dirac right-handed neutrinos under symmetry, demonstrating how their contribution to the effective number of relativistic species () offers distinct observational signatures for both WIMP and FIMP scenarios compared to conventional Majorana neutrino models.
This paper establishes that static, regular black holes in Horndeski theories are generically obstructed by instabilities or no-hair theorems, proving that analytic configurations reduce to singular Schwarzschild solutions while the only marginal nonanalytic completion (involving scalar-Gauss-Bonnet couplings) still fails to produce regular black holes.
This paper investigates how the Laser Interferometer Space Antenna (LISA) can detect ultralight dark matter quadratically coupled to the Standard Model by analyzing distinctive signals at twice the dark matter mass and lower frequencies, demonstrating that LISA can surpass current terrestrial and astrophysical constraints while avoiding screening effects.
This paper presents a comprehensive three-dimensional atmospheric neutrino flux calculation covering 10 MeV to 10 TeV across seven detector sites, incorporating novel muon propagation effects and updated input models to provide precise, site-dependent flux predictions with reduced systematic uncertainties for current and future neutrino and dark matter experiments.