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Strangeness in nuclear collisions

Gazdzicki, Marek ; Rohrich, Dieter ;

Z.Phys.C 71 (1996) 55-64, 1996.

Inspire Record 420462 DOI 10.17182/hepdata.13638

Data on the mean multiplicity of strange hadrons produced in minimum bias proton--proton and central nucleus--nucleus collisions at momenta between 2.8 and 400 GeV/c per nucleon have been compiled. The multiplicities for nucleon--nucleon interactions were constructed. The ratios of strange particle multiplicity to participant nucleon as well as to pion multiplicity are larger for central nucleus--nucleus collisions than for nucleon--nucleon interactions at all studied energies. The data at AGS energies suggest that the latter ratio saturates with increasing masses of the colliding nuclei. The strangeness to pion multiplicity ratio observed in nucleon--nucleon interactions increases with collision energy in the whole energy range studied. A qualitatively different behaviour is observed for central nucleus--nucleus collisions: the ratio rapidly increases when going from Dubna to AGS energies and changes little between AGS and SPS energies. This change in the behaviour can be related to the increase in the entropy production observed in central nucleus-nucleus collisions at the same energy range. The results are interpreted within a statistical approach. They are consistent with the hypothesis that the Quark Gluon Plasma is created at SPS energies, the critical collision energy being between AGS and SPS energies.

5 data tables

Table 1

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Table 2

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Table 3

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Strangeness enhancement in central S + S collisions at 200-GeV/nucleon.

The NA35 collaboration Baechler, J. ; Bartke, J. ; Bialkowska, H. ; et al.

Nucl.Phys.A 525 (1991) 221C-226C, 1991.

Inspire Record 328899 DOI 10.17182/hepdata.36820

None

4 data tables

Table 1

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Table 2

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Table 3

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Inclusive $K^0_S$, $\Lambda$ and $\bar{\Lambda}$ Production in 360-{GeV}/$c p p$ Interactions Using the European Hybrid Spectrometer

The EHS-RCBC & Bombay-CERN-Genoa-Innsbruck-Japan-Madrid-Mons-Rutgers-Serpukhov-Tennessee-Vienna collaborations Asai, M. ; Bailly, J.L. ; Banerjee, S. ; et al.

Z.Phys.C 27 (1985) 11, 1985.

Inspire Record 202938 DOI 10.17182/hepdata.16100

Results on cross sections, longitudinal and transverse momentum distributions forKs/0, Λ and$\bar \Lambda $ production in 360GeV/cpp interactions are presented as obtained from EHS equipped with the Rapid Cycling Bubble Chamber (RCBC). The Λ and$\bar \Lambda $ polarizations are measured. The cross section for the diffractive components is given using the recoil spectrum. The data are discussed with respect to charm production.

1 data table

Table 1

No description provided.