Charged Particle Production in Proton-, Deuteron-, Oxygen- and Sulphur-Nucleus Collisions at 200 GeV per Nucleon

The NA35 collaboration Alber, T. ; Appelshauser, H. ; Bachler, J. ; et al.
Eur.Phys.J.C 2 (1998) 643-659, 1998.
Inspire Record 450611 DOI 10.17182/hepdata.34289

The transverse momentum and rapidity distributions of net protons and negatively charged hadrons have been measured for minimum bias proton-nucleus and deuteron-gold interactions, as well as central oxygen-gold and sulphur-nucleus collisions at 200 GeV per nucleon. The rapidity density of net protons at midrapidity in central nucleus-nucleus collisions increases both with target mass for sulphur projectiles and with the projectile mass for a gold target. The shape of the rapidity distributions of net protons forward of midrapidity for d+Au and central S+Au collisions is similar. The average rapidity loss is larger than 2 units of rapidity for reactions with the gold target. The transverse momentum spectra of net protons for all reactions can be described by a thermal distribution with `temperatures' between 145 +- 11 MeV (p+S interactions) and 244 +- 43 MeV (central S+Au collisions). The multiplicity of negatively charged hadrons increases with the mass of the colliding system. The shape of the transverse momentum spectra of negatively charged hadrons changes from minimum bias p+p and p+S interactions to p+Au and central nucleus-nucleus collisions. The mean transverse momentum is almost constant in the vicinity of midrapidity and shows little variation with the target and projectile masses. The average number of produced negatively charged hadrons per participant baryon increases slightly from p+p, p+A to central S+S,Ag collisions.

43 data tables

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The value YRAP = 4PI is the extrapolation for 4PI acceptance.

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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

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Anti-baryon production in sulphur nucleus collisions at 200-GeV per nucleon

The NA35 collaboration Alber, T. ; Appelshäuser, H. ; Bächler, J. ; et al.
Phys.Lett.B 366 (1996) 56-62, 1996.
Inspire Record 427399 DOI 10.17182/hepdata.28428

Antiproton production near midrapidity has been studied in central collisions of 32 S with sulphur, silver and gold nuclei at 200 GeV per nucleon. The measured transverse mass distributions can be described by an exponential with inverse slope parameters of about 200 MeV, similar to those obtained from Λ spectra. The rapidity density increases weakly with the target mass, ranging from 0.4 to 0.7. The ratio Λ p near midrapidity is approximately 1.4 on average, significantly larger than the corresponding ratio observed in proton-proton and proton-nucleus collisions.

2 data tables

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Production of charged kaons in central S + S and O + Au collisions at 200-GeV/nucleon

The NA35 collaboration Kowalski, M. ; Bachler, J. ; Bartke, J. ; et al.
Nucl.Phys.A 544 (1992) 609C-614C, 1992.
Inspire Record 343256 DOI 10.17182/hepdata.36667

Product of charged kaons in central S + S and O + Au collisions at 200 GeV/nucleon has been studied in the NA 35 Streamer Chamber experiment. Mean multiplicities and transverse mass distributions were obtained. They were compared with nucleon-nucleon data and with model predictions.

5 data tables

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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

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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.

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