Long-range multiplicity correlations in proton-proton collisions
The forward-backward long-range multiplicity correlations in proton-proton collisions are investigated in the model with two independent sources of particles: one left- and one right-moving wounded nucleon. A good agreement with the UA5 collaboration proton-antiproton data at the c.m. energy of 200 GeV is observed. For comparison the model with only one source of particles is also discussed.
Multibin long-range correlations
A new method to study the long-range correlations in multiparticle production is developed. It is proposed to measure the joint factorial moments or cumulants of multiplicity distribution in several (more than two) bins. It is shown that this step dramatically increases the discriminative power of data.
A bag with soft surface
Abstract The MIT bag has a sharply edged surface. This seems to be unnatural. Taking the vector meson into account, we discuss the effects of a smooth surface of the bag constructed by the superposition of MIT bags with various radii on the baryon magnetic moments. Nucleon electromagnetic form factors were also calculated. A relation is derived between the surface diffuseness and the pion-quark interaction potential.