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.Comment: 11 pages, 5 figure

Wounded quark-diquark model predictions for heavy ion collisions at the LHC

The ratios of particle densities in lead-lead and proton-lead collisions to particle density in proton-proton collision in the central rapidity region at the LHC energy are predicted on the basis of wounded quark-diquark model.Comment: 9 pages, 2 figure

Charged pions multiplicities at the NA49 energy

The wounded quark-diquark model predictions for charged pions multiplicities in PbPb and pPb collisions in the central rapidity region at sqrt(s)=17.3 GeV c.m. energy are presented.Comment: 4 pages, 4 figure

Production of gluon jets in pp collisions by double pomeron exchange in the Landshoff-Nachtmann model

Using the Landshoff-Nachtmann two-gluon exchange model of the pomeron, the double pomeron exchange contribution to production of gluon pairs in the central region of rapidity is calculated. The results are compared with those for production of quark-antiquark pairs.Comment: 11 pages, 8 figures. Submitted to Acta Phys. Pol.

The diquark and elastic pion-proton scattering at high energies

Small momentum transfer elastic pion-proton cross-section at high energies is calculated assuming the proton is composed of two constituents, a quark and a diquark. We find that it is possible to fit very precisely the data when (i) the pion acts as a single entity (no constituent quark structure) and (ii) the diquark is rather large, comparable to the size of the proton.Comment: 9 pages, 4 figure

Multi-particle correlations in transverse momenta from statistical clusters

We evaluate $n$-particle ($n=2,3,4,5$) transverse momentum correlations for pions and kaons following from the decay of statistical clusters. These correlation functions could provide strong constraints on a possible existence of thermal clusters in the process of particle production.Comment: 7 pages, 3 figures; published versio