In this work improvements to the application of the Gross equation to nuclear systems are tested. In particular we evaluate the two pion exchange diagrams, including the crossed-box diagram, using models developed within the spectator-on-mass-shell covariant formalism. We found that the form factors used in these models induce spurious contributions that violate the unitary cut requirement. We ...

More than a million spectators watch game streaming platforms such as Twitch every month. This phenomenon suggests video games are a powerful entertainment media not just for players but for spectators as well. Since each spectator has personal preferences, customized spectator-specific game plays are arguably a promising option to increase the entertainment value of video games streaming. In t...

A COVARIANT DESCRIPTION OF THE DEUTERON AND A BUNCH OF OTHER STUFF A. Student Old Dominion University, 2014 Director: Dr. John Doe An introduction to the use of Bethe-Salpeter and quasipotential equations in the description of electron scattering from the deuteron is provided. The basic formalism and many technical issues are introduced in the context of a simple scalar theory. Results for boun...

Resonant Auger electron spectra were measured for several condensed molecules …Si…CH3†3Cl, SiCl4, PCl3, C3H7SH and CCl4† around Si-, P-, S-, and Cl-1s edges. It was commonly found that the most frequent decay channel after the excitation was a KL2; 3L2; 3 transition. As predicted by a resonant inelastic scattering theory, the phenomenon known as the Auger resonant Raman effect was observed in t...

We discuss strong decays of baryon resonances within the concept of relativistic constituent quark models. In particular, we follow a Poincaré-invariant approach along the point form of relativistic quantum mechanics. Here, we focus on pionic decay modes of N and ∆ resonances. It is found that the covariant quark-model predictions calculated in the point-form spectator model in general underest...

Officially organized, spectator driven eSport tournaments occur within the notoriously transgressive and ruthless game EVE Online. In these tournaments spying, bribing and throwing matches is commonplace. Based on results from interviews with competitors and spectators, this paper discusses the appeal of this unique eSport and explores the way in which the relatively ‘unbounded’ approach in EVE...

The production of slow nucleons in semi-inclusive deep inelastic electron scattering off the deuteron is investigated in the region x ∼ > 0.3 for kinematical conditions accessible at HERA. Within the spectator mechanism the semi-inclusive cross section exhibits a scaling property, which can be used as a model-independent test of the dominance of the spectator mechanism itself, providing in this...

We present a mechanistic study on selective hydrogenation of acrolein over model Pd surfaces--both single crystal Pd(111) and Pd nanoparticles supported on a model oxide support. We show for the first time that selective hydrogenation of the C═O bond in acrolein to form an unsaturated alcohol is possible over Pd(111) with nearly 100% selectivity. However, this process requires a very distinct m...

The general features of baryon form factors calculated with point form kinematics are derived. With point form kinematics and spectator currents hadronic form factors are functions of η := 1 4 (vout − vin) and, over a range of η values, are insensitive to unitary scale transformations of the model wave functions when the extent of the wave function is small compared to the scale defined by the ...

A production mechanism of highly excited nuclei formed in violent collisions in the Fermi energy domain is investigated. The collision of two nuclei is decomposed into several stages which are treated separately. Simplified exciton concept is used for the description of pre-equilibrium emission. A modified spectator-participant scenario is used where motion along classical Coulomb trajectories ...