HEPData Search

Showing 10 of 18 results

Hyperon production in proton tungsten interactions at 200-GeV/c

The WA85 collaboration Abatzis, S. ; Andrighetto, A. ; Antinori, F. ; et al.

Phys.Lett.B 393 (1997) 210-216, 1997.

Inspire Record 456774 DOI 10.17182/hepdata.6511

The relative production yields and transverse mass spectra for Λ, Λ , Ξ − and Ξ + hyperons in proton-tungsten interactions are presented and compared with the WA85 results from central sulphur-tungsten interactions. A study of the negative particle yield has also been undertaken and the ratio of Λ hyperons to negative particles has been calculated.

9 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Multiplicity dependence of strangeness production in S + Pb collisions at 200-GeV/c per nucleon

The NA36 collaboration Andersen, E ; Blaes, R ; Brom, J.M ; et al.

Phys.Lett.B 316 (1993) 603-607, 1993.

Inspire Record 364810 DOI 10.17182/hepdata.28817

Production of Λ, Λ , and K s 0 has been measured for a wide range of event multiplicity in S+Pb reactions at 200 GeV/c per nucleon. The production of Λ is shown to increase with multiplicity faster than expected from a superposition of p+p collisions. The effect is seen for low multiplicity (below 100 negative particles).

5 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

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.

Lambda, Xi and Omega production in Pb Pb collisions at 158-A-GeV/c.

The WA97 collaboration Andersen, E. ; Antinori, F. ; Armenise, N. ; et al.

Nucl.Phys.A 638 (1998) 115-124, 1998.

Inspire Record 481868 DOI 10.17182/hepdata.36351

Enhanced production of strange baryons and anti-baryons at central rapidity in S-W and S-z.sbnd;S with respect to p-A reactions has been reported by the CERN experiments WA85 and WA94. The WA97 experiment is extending such a study to Pb Pb collisions making use of the newly developed silicon pixel detectors. Results on Λ, Ξ − and Ω − production in Pb Pb collisions at 158 A GeV/ c at central rapidity are presented. Transverse mass spectra and particle ratios are presented. Hyperon yields are given as a function of the collision centrality and compared with those obtained from p-Pb collisions using the same experimental setup.

5 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Recent Results From the Na35 Collaboration at {CERN}

The NA35 collaboration Harris, J.W. ; Bamberger, A. ; Bangert, D. ; et al.

Nucl.Phys.A 498 (1989) 133C-150C, 1989.

Inspire Record 271884 DOI 10.17182/hepdata.36948

Recent results from the NA35 Collaboration are presented for the reactions of 60 and 200 GeV/nucleon p and 16 O, and 200 GeV/nucleon 32 S with various targets ranging from S to Au. Midrapidity transverse energy distributions and forward energy flow, p⊥ spectra and rapidity distributions of hadrons are presented. Two-pion interferometry results are discussed. Neutral strange particle yields and p⊥ distributions are presented. Conclusions are drawn from the experimental results.

7 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

WA97 results on strangeness production in lead lead collisions at 158-A-GeV/c

The WA97 collaboration Andersen, E. ; Andrighetto, A. ; Antinori, F. ; et al.

Nucl.Phys.A 610 (1996) 165C-174C, 1996.

Inspire Record 432744 DOI 10.17182/hepdata.36503

Preliminary results from WA97 measurements on Λ, Ξ and Ω production in lead-lead and proton-lead collisions are presented, along with a comparison of WA97 proton-lead data with previous WA85 proton-tungsten results. The ratio Ω gX seems to be enhanced in lead initiated reactions compared to proton initiated reactions.

4 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

PRELIMINARI DATA.

More…

Hadron production in S + Ag and S + Au collisions at 200-GeV/nucleon

The NA35 collaboration Röhrich, Dieter ; Alber, T. ; Bächler, J. ; et al.

Nucl.Phys.A 566 (1994) 35C-44C, 1994.

Inspire Record 378631 DOI 10.17182/hepdata.36563

None

3 data tables

Table 1

No description provided.

Table 2

NET BARYON DENSITY D(N)/D(Y) HAS BEEN DETERMINED AT THE RAPIDITY OF NN C.M.S., FOR NET BARYON THE FORMULAR: 2*(P-PBAR)+1.6*(LAMBDA- LAMBDABAR) HAS BEEN USED.

Table 3

No description provided.

Strange particle production in sulphur - tungsten interactions at 200-GeV/c per nucleon

The WA85 collaboration Kinson, J.B. ; Abatzis, S. ; Antinori, F. ; et al.

Nucl.Phys.A 544 (1992) 321-334, 1992.

Inspire Record 321220 DOI 10.17182/hepdata.36664

Multi-strange baryon and anti-baryon 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, K o s, Λs, Λ s, and Ξ − s produced in sulphurtungsten interactions at 200 GeV/c per nucleon and give the corrected ratios Λ Λ, Ξ − Λ and Ξ − /Λ . We note that our ratio Ξ − / Λ appears large in comparison to that from p p interactions.

4 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Recent results from experiment NA35.

The NA35 collaboration Seyboth, P. ; Baechler, J. ; Bartke, J. ; et al.

Nucl.Phys.A 544 (1992) 293C-307C, 1992.

Inspire Record 343637 DOI 10.17182/hepdata.36668

Enhanced strange particle production, nonstatistical multiplicity fluctuations and two-pion Bose-Einstein correlations were measured in O, S-nucleus reactions at 60 and 200 GeV/nucleon. The results indicate significant collective effects in high-energy nucleus-nucleus collisions.

2 data tables

Table 1

CENTRAL COLLISIONS.

Table 2

CENTRAL COLLISIONS.