Skip to main content
Log in

A study ofK os , Λ and\(\bar \Lambda \) production in 60 and 200 GeV per nucleon OAu and pAu collisions with a streamer chamber detector at the CERN SPSproduction in 60 and 200 GeV per nucleon OAu and pAu collisions with a streamer chamber detector at the CERN SPS

  • Published:
Zeitschrift für Physik C Particles and Fields

Abstract

The production of neutral strange particlesK os , Λ and\(\bar \Lambda \) has been studied in 60 and 200 GeV per nucleon OAu and pAu collisions with the streamer chamber vertex spectrometer of the NA35 experiment at the CERN-SPS accelerator. Ratios of neutral strange particle production to negatively charged particle production in selected regions of phase space were measured to be the same in OAu and pAu reactions. The rates of strange particle production in central OAu collisions are about a factor of 16 higher than in pAu collisions when compared in the same regions of phase space. If an enhancement of strange particle production in OAu collisions relative to pAu collisions is considered to be a signature for quark-gluon plasma formation, no evidence supporting it is observed. The experimental results are compared to the Lund FRITIOF model.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Quark matter formation and heavy ion collisions. M. Jacob, J. Tran Than Van (eds.): Phys. Rep. 88, 321 (1986). A recent review of QGP formation and its experimental signatures can be found in: K. Kajantie, L. McLerran: Rev. Nucl. Part. Sci. 37, 293 (1987)

  2. The first set of experimental results may be found in Quark matter 1987. H. Satz, H. Specht, R. Stock (eds.): Z. Phys. C —Particles and Fields 38 (1988)

  3. For a review see: P. Koch, B. Müller, J. Rafelski: Strangeness in relativistic heavy ion collisions. Phys. Rep. 142, 167 (1986)

    Article  ADS  Google Scholar 

  4. I. Kogut, D. Sinclair: Phys. Rev. Lett. 60 (1988) 1250

    Article  ADS  Google Scholar 

  5. T. Matsui et al.: Phys. Rev. D34 (1986) 2047; Kang S., Lee et al.: Phys. Rev. C37 (1988) 1452, 1463

    Article  ADS  Google Scholar 

  6. M. Jacob, J. Rafelski: Phys. Lett B190 (1987) 173

    Article  ADS  Google Scholar 

  7. G. Vesztergombi et al.: Z. Phys. C — Particles and Fields 38 (1988) 129

    Article  Google Scholar 

  8. A. Bamberger et al.: Phys. Lett. B184 (1987) 271; A. Sandoval et al.: Nucl. Phys. A 461 (1987) 465c

    Article  ADS  Google Scholar 

  9. M. Bartlett: Phil. Mag. 44 (1953) 249

    Google Scholar 

  10. Review of Particle Properties: Phys. Lett. B 170 (1986)

  11. A preliminary discussion of π,p,K o s , Λ and\(\bar \Lambda \) transverse momentum spectra from this experiment in terms of models with radial expansion flow can be found in J. W. Harris et al.: Preprint LBL-26258 (1988), to be published in Quark Matter 88, Nucl. Phys. A. However, forK o s , Λ and\(\bar \Lambda \) spectra the experimental data are restricted to larger values ofp T and definite theoretical predictions do not exist

  12. see e.g. R. Hagedorn: Riv. Nuovo Cimento 6 (1983) 1

    MathSciNet  Google Scholar 

  13. B. Andersson et al.: Nucl. Phys. B281 (1987) 289: The program versions FRITIOF 1.6 and JETSET 6.2 were used, with standard parameters (the strange quark suppression factor was 0.3)

    Article  ADS  MathSciNet  Google Scholar 

  14. P. Sonderegger et al.: Z. Phys. C — Particles and Fields 38 (1988) 129

    Article  Google Scholar 

  15. Y. Miake et al.: Z. Phys. C — Particles and Fields 38 (1988) 135

    Article  Google Scholar 

  16. K. Jaeger et al.: Phys. Rev. D11 (1975) 2405

    Article  ADS  Google Scholar 

  17. M. Asai et al.: Z. Phys. C — Particles and Fields 27 (1985) 11

    Article  Google Scholar 

  18. J. Cronin et al.: Phys. Rev. D11 (1975) 3105; D. Antreasyan et al.: Phys. Rev. D 19 (1979) 764

    Article  ADS  Google Scholar 

  19. H. Stroebele et al.: Z. Phys. C — Particles and Fields (1988) 89

Download references

Author information

Authors and Affiliations

Authors

Consortia

Rights and permissions

Reprints and permissions

About this article

Cite this article

NA35 Collaboration., Bamberger, A., Bartke, J. et al. A study ofK os , Λ and\(\bar \Lambda \) production in 60 and 200 GeV per nucleon OAu and pAu collisions with a streamer chamber detector at the CERN SPSproduction in 60 and 200 GeV per nucleon OAu and pAu collisions with a streamer chamber detector at the CERN SPS. Z. Phys. C - Particles and Fields 43, 25–35 (1989). https://doi.org/10.1007/BF02430607

Download citation

  • Received:

  • Revised:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02430607

Keywords

Navigation