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The Temperature of negative pions in light ions collisions with carbon and tantalum nuclei at 4.2-A/GeV/c

Backovic, S. ; Salihagic, D. ; Simic, L. ; et al.

JINR-E1-91-376, 1991.

Inspire Record 322978 DOI 10.17182/hepdata.39403

None

1 data table

Table 1

THE SLOPE IS DETERMINED FROM THE FIT OF THE INVARIANT SPECTRUM (1/N)* (1/(2*3.14*PT))*D(N)/D(PT) BY A FORMULA MT*SUM(N=1,...) K1(N*SLOPE*MT), WHERE K1 IS MACDONALD FUNCTION.

Xi-, anti-xi-, Lambda and anti-Lambda production in sulphur - tungsten interactions at 200-GeV/c per nucleon

The WA85 collaboration Abatzis, S. ; Antinori, F. ; Barnes, R.P. ; et al.

Phys.Lett.B 270 (1991) 123-127, 1991.

Inspire Record 318147 DOI 10.17182/hepdata.29306

Multi-strange baryon and antibaryon production is expected to be a useful probe in the search for quark-gluon plasma formation. We present the transverse mass distributions of negative particles, Λ' s , Λ ' s and Ξ − ' s produced in sulphur-tungsten interactions at 200 GeV/ c per nucleon and give the corrected rations Λ /Λ, Ξ − /Λ and Ξ − / Λ . Our ratio Ξ − / Λ appears to be larger than that from pp interactions.

3 data tables

Table 1

Inverse slopes for different particle production.

Table 2

Data from this and other WA85 publications.

Table 3

Data from this and other WA85 publications.

Hadron production in nucleon-nucleon collisions at 200-GeV/c: A Compilation

Gazdzicki, M. ; Hansen, O. ;

Nucl.Phys.A 528 (1991) 754-770, 1991.

Inspire Record 323125 DOI 10.17182/hepdata.36760

Data on stable hadron production in p + p and p + n interactions at 200 GeV/ c are reviewed. Methods to construct missing data in the p + p, p + n, and n + n interactions are derived from charge symmetry and charge, baryon and strangeness conservation, and used to yield nucleon-nucleon interaction results. These may be useful for evaluating nucleus-nucleus collision measurements in terms of enhancements and suppressions. Parameterizations of p t 2 and rapidity distributions are presented to provide yields in acceptance cuts for comparisons to nucleus-nucleus data. As an example the derived nucleon-nucleon multiplicities are reduced to the acceptances of the NA-35 CERN S + S experiment.

13 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Fundamental constants of physics

Okun, L.B. ;

0819-840, 1991.

Inspire Record 315482 DOI 10.17182/hepdata.40037

None

1 data table

Table 1

No description provided.

Proton distributions in the target fragmentation region in proton - nucleus and nucleus-nucleus collisions at high-energies

The HELIOS collaboration Åkesson, T. ; Almehed, S. ; Angelis, A.L. S. ; et al.

Z.Phys.C 53 (1992) 183-192, 1992.

Inspire Record 317494 DOI 10.17182/hepdata.14773

We present measurements of the rapidity and transverse-momentum distributions of the protons emitted in S+W, O+W, andp+W reactions at 200 GeV/A around the target rapidity (y=1). The rapidity density rises linearly with the transverse energy for all three systems, but the slope forp+W is much steeper than for O+W and S+W. The rapidity density forp+W is much higher than predicted by summing single nucleonnucleon collisions without any nuclear effects, indicating substantial rescattering of the produced particles. The predictions of the VENUS 3 model, including rescattering, show reasonable agreement with the data for all three systems. We do not have evidence for a strong collective flow of the outgoing particles.

39 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Hadron spectra in hadron - nucleus collisions

Armutliiski, D. ; Baatar, Ts. ; Batsaikhan, Ts. ; et al.

JINR-P1-91-191, 1991.

Inspire Record 319258 DOI 10.17182/hepdata.38698

None

6 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Study of correlations of positive and negative charged particles.

Takahashi, Y. ; Chan, C.H. ; Dong, B.L. ; et al.

Nucl.Phys.A 525 (1991) 591C-594C, 1991.

Inspire Record 328938 DOI 10.17182/hepdata.36815

Particle correlations of the central collision events of 32 S + Pb at 200 GeV/AMU have been studied by utilizing a Magnetic-Interferometric-Emulsion-Chamber (MAGIC) detector. Particle angles, momentum, and charge-signs are measured for all produced charged tracks for each event. Two-particle correlation functions, C 2 = dN (¦ p 1 − p 2 ¦= q )/ dp 1 dp 2 , for (++), (−−) and (+-) particles are examined. A source radius around 4 – 6 fm is observed for overall identical particle correlations, while unexpected short-range correlations of unlike-sign pairs are observed in the high rapidity region. An analysis of unlike-sign pairs in terms of resonance decays indicated that a large amount (40% relative to pions) of η or ω mesons (decaying into 3 π), or of scalar iso-scalar σ mesons (decaying into 2π) would be required to explain some of the data. Multi-particle charge-sign clusters are recognized; however, their “run-test” and “conjugate-test” show small deviations from statistical fluctuations.

1 data table

Table 1

No description provided.

Neutral meson production in relativistic heavy ion collisions

The TAPS collaboration Berg, F.D. ; Boonstra, A. ; Braak, H.P. ; et al.

Z.Phys.A 340 (1991) 297-302, 1991.

Inspire Record 324774 DOI 10.17182/hepdata.16588

The production ofπ0 andη mesons has been studied in the reactions20Ne +Al at 350 MeV/u and40Ar + Ca at 1.0 GeV/u. Rapidity distributions and transverse momentum spectra have been measured and are compared to thermal distributions.

2 data tables

Table 1

THE SPECTRUM (1/PT)*D(SIG)/D(PT) HAS BEEN FITTED BY A THERMAL DISTRIBUTION SQRT(MT)*EXP(-SLOPE*MT).

Table 2

THE SPECTRUM (1/PT)*D(SIG)/D(PT) HAS BEEN FITTED BY A THERMAL DISTRIBUTION SQRT(MT)*EXP(-SLOPE*MT).