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Study of the energy flow in sulphur and oxygen nucleus collisions at 60-GeV/nucleon and 200-GeV/nucleon

The NA35 collaboration Baechler, J. ; Bartke, J. ; Bialkowska, H. ; et al.
Z.Phys. C52 (1991) 239-263, 1991.
Inspire Record 323583 DOI 10.17182/hepdata.1434

We report on a systematic study of midrapidity transverse energy production and forward energy flow in interactions of16O and32S projectiles with S, Cu, Ag and Au targets at 60 and 200 GeV/nucleon. The variation of the shape of theET distributions with target and projectile mass can be understood from collision geometry. AverageET values determined for central collisions show an increasing stopping power for heavier target nuclei. A higher relative stopping is observed at 60 GeV/nucleon than at 200 GeV/nucleon. Bjorken estimates of the energy density reach approximately 3 GeV/fm3 in highET events at 200 GeV/nucleon with16O and32S projectiles. The systematics of the data and the shapes ofET and pseudorapidity distributions are well described by the Lund model Fritiof.

48 data tables

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Charged particle multiplicities in nuclear collisions at 200-GeV/N

The NA35 collaboration Baechler, J. ; Bartke, J. ; Bialkowska, H. ; et al.
Z.Phys. C51 (1991) 157-162, 1991.
Inspire Record 320907 DOI 10.17182/hepdata.14983
4 data tables

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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. C2 (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. A498 (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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Charged Particle Multiplicities and Interaction Cross-sections in High-energy Nuclear Collisions

The NA35 collaboration Bamberger, A. ; Bangert, D. ; Bartke, J. ; et al.
Phys.Lett. B205 (1988) 583-589, 1988.
Inspire Record 262284 DOI 10.17182/hepdata.42035
2 data tables

Minimum bias events.

Hard veto and hard Et events.


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

The NA35 collaboration Alber, T. ; Appelshaeuser, H. ; Baechler, J. ; et al.
Phys.Lett. B366 (1996) 56-62, 1996.
Inspire Record 427399 DOI 10.17182/hepdata.28428
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. A544 (1992) 609C-614C, 1992.
Inspire Record 343256 DOI 10.17182/hepdata.36667
5 data tables

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Recent results from experiment NA35.

The NA35 collaboration Seyboth, P. ; Bachler, J. ; Bartke, J. ; et al.
Nucl.Phys. A544 (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

CENTRAL COLLISIONS.

CENTRAL COLLISIONS.


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

The NA35 collaboration Rohrich, D. ; Alber, T. ; Bachler, J. ; et al.
Nucl.Phys. A566 (1994) 35C-44C, 1994.
Inspire Record 378631 DOI 10.17182/hepdata.36563
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.

No description provided.


Multiplicity distributions in small phase space domains in central nucleus-nucleus collisions

The NA35 collaboration Bachler, J. ; Bartke, J. ; Bialkowska, H. ; et al.
Z.Phys. C57 (1993) 541-550, 1993.
Inspire Record 342658 DOI 10.17182/hepdata.14492
13 data tables

Multiplicity distribution analysed in 1D for M = 4.

Multiplicity distribution analysed in 2D for M = 16.

Multiplicity distribution analysed in 3D for M = 64.

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Production of charged kaons in proton - nucleus and nucleus-nucleus collisions at 200-GeV/Nucleon

The NA35 collaboration Bachler, J. ; Bartke, J. ; Bialkowska, H. ; et al.
Z.Phys. C58 (1993) 367-374, 1993.
Inspire Record 342660 DOI 10.17182/hepdata.14428
22 data tables

Tranverse mass distribution for all charged kaons in S S collisions for the limited yrap range 1.4 to 2.4.

Tranverse mass distribution for K0S production in the limited rapidity range 1.4 to 2.4. Data are taken from Bartke et al. ZP C48 (1990) 191.

Rapidity distribution for K+ production in p SU interactions.

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Neutral strange particle production in sulphur sulphur and proton sulphur collisions at 200-GeV/nucleon

The NA35 collaboration Bartke, J. ; Bialkowska, H. ; Bock, R. ; et al.
Z.Phys. C48 (1990) 191-200, 1990.
Inspire Record 304994 DOI 10.17182/hepdata.15177
15 data tables

Tranverse kinetic energy spectra of neutral strange particles in P SU collisions.

Tranverse kinetic energy spectra of neutral strange particles in P SU collisions.

Tranverse kinetic energy spectra of neutral strange particles in SU SU collisions.

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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. A525 (1991) 221C-226C, 1991.
Inspire Record 328899 DOI 10.17182/hepdata.36820
4 data tables

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Study of the Energy Flow in $^{16}$O Nucleus Collisions at 60-{GeV}/nucleon and 200-{GeV}/nucleon

The NA35 collaboration Heck, W. ; Bamberger, A. ; Bangert, D. ; et al.
Z.Phys. C38 (1988) 19, 1988.
Inspire Record 262285 DOI 10.17182/hepdata.37151
0 data tables