Tootfinder

Virtual Reality in den 90ern: Wie in Spielhallen der erste VR-Hype entstand
Vor Oculus & Co. kam Virtuality: Wie ein britisches Start-up Virtual Reality populär machte und an Technik, Heimkonsolen und Zeitgeist scheiterte.

$\eta$ and $\eta'$ production in $J/\psi$ radiative decays from quantum chromodynamics
Mischa Batelaan, Jozef J. Dudek, Robert G. Edwards
https://arxiv.org/abs/2506.09306

$η$ and $η'$ production in $J/ψ$ radiative decays from quantum chromodynamics
We present a first principles calculation within quantum chromodynamics (QCD) of the radiative decays of the $J/ψ$ into the light pseudoscalar mesons $η$ and $η'$. Within a lattice computation we obtain the transition form-factors as a function of photon virtuality from the timelike region, accessible experimentally via the 'Dalitz' decay $J/ψ\to e^+ e^-\, η^{(\prime)} $, through to the real photon point corresponding to $J/ψ\to γ\, η^{(\prime)} $. This is the first calculation in latti…

Multi-partonic interactions, iterated discontinuities and the virtuality expansion in deep inelastic scattering
Zeno Capatti, Lucien Huber, Michael Ruf
https://arxiv.org/abs/2506.16489

Multi-partonic interactions, iterated discontinuities and the virtuality expansion in deep inelastic scattering
We introduce a perturbative model that accounts for the contribution of multi-partonic interactions to collider observables. A key feature of this multi-parton model is that cross sections are organised in terms of building blocks that are separately infrared-finite in virtue of the KLN theorem. We find compact expressions for these building blocks in terms of double discontinuities of Feynman-type integrals obtained by endowing a vacuum graph with additional topological information. The framew…

Naive parton picture for color transparency of kaon in the electronuclear reaction $A(e,e'K^ )$
Kook-Jin Kong, Tae Keun Choi, Byung-Geel Yu
https://arxiv.org/abs/2506.15331

Naive parton picture for color transparency of kaon in the electronuclear reaction $A(e,e'K^+)$
Nuclear transparency in the kaon-induced nuclear reaction $A(e,e'K^+)$ is investigated in parallel with our previous study on the pion transparency in Phys. Rev. C {\bf111}, 064608 (2025). Based on the Glauber scattering theory, which incorporates shadowing by the two-step process, the kaon color transparency (CT) is analyzed to find that the slope of the kaon CT steeper than the pion CT along with the photon virtuality $Q^2$ increase is well accounted for by the naive parton model (NPM) rather…