Hadronic interactions are successfully parameterized in different models. Those most frequently applied are the Regge parameterization and the geometrical model. In the present paper we want to apply the geometrical picture to different domains of the hadronic interaction. The model used is a very economical model in that it contains only few parameters most of which have a direct physical inte...

Different interaction models treating hadronic collisions below Elab<100 GeV in air shower simulations are compared within the frame of the CORSIKA program. Their behaviour is studied in isolated collisions of protons or pions with light-mass targets in comparison with experimental data. It is discussed how model properties influence air-shower parameters like the longitudinal profile or the la...

Using electromagnetic corrections previously calculated by means of a potential model, we have made a phase-shift analysis of the πp elastic-scattering data up to a pion laboratory kinetic energy of 100 MeV. The hadronic interaction was assumed to be isospin invariant. We found that it was possible to obtain self-consistent databases by removing very few measurements. A pion-nucleon model, base...

■ Abstract Studies of the strangeness-changing hadronic weak interaction have produced a number of puzzles that have evaded a complete explanation within the Standard Model. Their origin may lie either in dynamics peculiar to weak interactions involving strange quarks or in more general aspects of the interplay between strong and weak interactions. In principle, studies of the strangeness-conse...

Using electromagnetic corrections previously calculated by means of a potential model, we have made a phase-shift analysis of the πp elastic-scattering data up to a pion laboratory kinetic energy of 100 MeV. The hadronic interaction was assumed to be isospin invariant. We found that it was possible to obtain self-consistent databases by removing very few measurements. A pion-nucleon model, base...

In this analysis the structure of hadronic shower cores is investigated with the KASCADE calorimeter. The energy, position, and direction of incidence for individual hadrons above 50 GeV are measured. In parallel, the spatial structure is studied using the simulation program CORSIKA with the hadronic interaction model QGSJET. First results are presented for the showers with primary energies abo...