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The influence of collision centrality upon spectra of negative particles produced indC, αC and CC interactions at 4.2 GeV/c per nucleon is studied. The netcharge of secondary particles is used as a measure of collision centrality. Comparison with the nucleon-nucleon collisions and with Dubna intranuclear cascade model is presented. The main features of the momentum, rapidity and angular spectra are compatible with the independent, nucleon-nucleon collision picture. Only in thepT spectra, the observed particle excess, for low and highpT, is inconsistent with this approach. In contrast to the pions, the spectra of protons are more sensitive to the collision centrality.

4 data tables

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Comparative Characteristics of Central and Noncentral C C Interactions at 4.2-{GeV} Per Nucleon

Agakishiev, G.N. ; Backovic, S. ; Boldea, V. ; et al.

Sov.J.Nucl.Phys. 51 (1990) 481-485, 1990.

Inspire Record 285507 DOI 10.17182/hepdata.17258

None

5 data tables

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P - IS PROTON-PARTICIPANTS, ITS NUMBER WAS DEFINED AS FOLLOWS: N(P)=N+ - N - N(S,P) - N(S,T), WHERE N+ , N- - NUMBER OF MULT(CHARGED) PARTICLES WITH Z=+1 AND Z=-1, N(S,P), N(S,T) - NUMBER OF STRIPPING PARTICLES WITH Z=1 FROM PROJECTILE (P>3 GEV, THETA<4 DEG) AND TARGET (P<0.3 GEV FOR PROTONS).

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Multiplicity of Charged Particles in Interactions of Oxygen Nuclei With Hydrogen at 3.1-{GeV}/$c$ Momentum

The Alma Ata-Warsaw-Dubna-Tashkent-Tbilisi collaboration Glagolev, V.V. ; Lebedev, R.M. ; Pestova, G.D. ; et al.

Z.Phys.A 345 (1993) 413-424, 1993.

Inspire Record 281736 DOI 10.17182/hepdata.16558

Experimental data on multiplicities of secondary charged particles in interactions of oxygen nuclei in a hydrogen bubble chamber at the incident momentum of 3.1 A GeV/c are presented and discussed. Multiplicity correlations are studied in details and it is shown that the character of these correlations is strongly influenced by the electric charge and baryon number conservation. Topologies and probabilities of different channels of fragmentation are determined for projectile oxygen nuclei. It is established that channels with production of helium nuclei play an important role in the processes of multifragment break-up of oxygen nuclei. Comparison of the experimental data with predictions of the cascadefragmentation-evaporation model has shown that the model provide the qualitative description of the considerable amount of experimental observations.

3 data tables

Table 1

FRAGB-fragments of a primary nucleus with Z=2, 3, 4, 5, 6, 7, 8.

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Events of the total disintegration of the projectile nucleus: fragments with Z=2, 3, 4, 5, 6, 7, 8 are absent.