A New Distribution for Multiplicities in Leptonic and Hadronic Collisions at High Energies

Hadronic photon-photon interactions at high energies.

Photon-photon collisions are investigated in the framework of the two-component Dual Parton Model. The model contains contributions from direct, resolved soft and resolved hard interactions. All free parameters of the model are determined in fits to hadronhadron and photon-hadron cross section data. The model is shown to agree well to hadron production data from hadron-hadron and photon-hadron ...

From Unintegrated Gluon Distributions to Particle Production in Hadronic Collisions at High Energies

The inclusive distributions of gluons and pions for high-energy NN collisions are calculated. The results for several unintegrated gluon distributions (UGD’s) from the literature are compared. We find huge differences in both rapidity and pt of gluons and π’s in NN collisions for different models of UGD’s. The Karzeev-Levin UGD gives good description of momentum distribution of charged hadrons ...

Electromagnetic and hadronic forces in nuclear peripheral collisions at intermediate energies studied via γ-ray angular distribution at RISING

Hadron-nuclei collisions at high energies

A brief historical review is made of the hadron-hadron (hh) total cross section and hadronnucleus absorption cross section measurements, made mainly at high energy proton synchrotrons. Then I shall discuss low pt processes, including diffraction processes and fragmentation of nuclei in nucleusnucleus collisions. Nucleus-nucleus collisions at higher energy colliders are then considered, mainly i...

Non-perturbative Scales in Soft Hadronic Collisions at High Energy∗)

We investigate the role of nonperturbative quark-gluon dynamics in soft high energy processes. In order to reproduce differential and total cross sections for elastic protonproton and proton-antiproton-scattering at high energy and small momentum transfer it turns out that we need two scales, the gluonic correlation length and a confinement scale. We find a small gluonic correlation length, a ≃...