Jet Formation Process Research Articles

Direct photons in e +e − annihilation

We study the production of direct photons in e +e − annihilation e +e − → γ + hadrons, where the high-energy photon is emitted at a large angle to a hadron jet or is a fragment of the jet itself. We give the angle and energy dependence of the cross section for photons radiated from the final-state quarks, the initial-state leptons, and also the interference term. Large angle radiation by the quarks is only mildly affected by QCD corrections to the parton model. For photons radiated within or near a jet axis, however, the gluon radiative corrections can be large. We study the phenomenological implications of these corrections at present and future energies. Direct photon production affords a unique view into the short- and long-distance processes of jet formation. It can help clarify the space-time transition between perturbative and non-perturbative processes in jet development.

Effect of the initial temperature on the process of jet and wave formation with explosion welding

Effect of the initial temperature on the process of jet and wave formation with explosion welding

Influence of material viscosity on the jet formation process during collisions of metal plates

Influence of material viscosity on the jet formation process during collisions of metal plates

An experimental survey of 8Li emission in 50 GeV/ cπ− interactions with emulsion nuclei

From the NIKFI-R emulsions exposed to 50 GeV/ c π − beam, 82 events of hammer tracks (HTs) are collected. Energy spectra, total number of heavy prongs ( N h) versus average energy spectra and forward to backward ratio ( F B ) in different cases are studied. The angular distribution of the events is found anisotropic. The process of jet formation affects the direction of emission of the intermediate mass nuclei.