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Author(s): Stefan Kluth, Wolfgang Ochs, and Redamy Perez-Ramos The dead cone is the angular region about the momentum direction of a heavy quark in which QCD radiation is suppressed. While well-studied and even experimentally validated for bottom quarks, observing the dead cone for the most massive quark, the top, is exceedingly subtle because of its nearly immediate decay. The authors present a thorough study of the dead cone for top quarks,...

Author(s): Guang Yang and Praveen Kumar This study investigates the potential of electron–proton scattering at the Electron–Ion Collider to constrain the neutrino–nucleon axial form factor with unprecedented precision. By exploiting a free-proton target, the proposed measurements largely avoid nuclear-model uncertainties and offer a promising avenue for advancing the precision frontier of neutrino interaction physics. [Phys. Rev. D 113, 116031...

Author(s): An Huang and Christian Baadsgaard Jepsen p-adic string theory asks how much of string physics really depends on ordinary spacetime geometry. Quantum gravity may replace smooth short-distance geometry with more primitive or nonlocal structures; p-adic models provide a laboratory where the notion of distance is very different. This manuscript tests whether one of the most basic stringy signatures – the rapid high-energy growth of states...

Author(s): Guillermo Franco Abellán A disagreement over neutrino-mass estimates might be resolved by assuming that neutrinos decay into hypothetical massless particles. [Phys. Rev. D 113, 123527] Published Thu Jun 11, 2026

Author(s): Lorenzo Gavassino, Áron D. Kovács, and Harvey S. Reall The authors propose a “reduction of order” approach to deal with unphysical degrees of freedom that arise in relativistic viscous hydrodynamics and in gravitational effective field theories, not at the equation of motion level but in the initial data, expressing the data for the unphysical variables in terms of those for the physical ones. They also show that the apparent loss of...

Author(s): Antonio Garcia Vallejo and Matthew D. Sievert Generalized parton distributions (GPDs) encode information of all components of partonic momentum, potentially enabling three-dimensional spatial resolution of a nucleon’s substructure. The authors extend previous formulations of GPDs through a Wigner transform, and demonstrate its utility for the Helium-4 nucleus. The resulting master formula for GPDs manifests a novel spin-orbit coupling...

Author(s): Jordan Flitter, Julian B. Muñoz, and Andrei Mesinger Efficient treatment of Lyman-alpha photon multiple scattering is shown to be possible through semi-analytic treatment of the average distance that a photon traverses prior to absorption. By incorporating this scheme into the 21cmFAST code, the authors show that Lyman-alpha multiple scattering can cause significant differences in the predicted high-redshift 21cm power spectrum. ...