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Diffusion model for relativistic heavy-ion collisions

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Zeitschrift für Physik A Hadrons and Nuclei

Abstract

A transport model is formulated in order to represent the nonequilibrium-statistical nature of heavy-ion collisions at relativistic and ultra-relativistic energies. The time evolution of macroscopic variables such as transverse energyE ⊺ and longitudinal energyE ‖, or rapidityY, is described by means of a diffusion equation. Analytical solutions for mean values and fluctuations ofE ⊺ andE ‖ are derived and evaluated at impact-parameter dependent values of the interaction times. Agreement with the available data on transverse energy distributions in ultra-relativistic reactions fromp+Au to Au+Au is obtained, and calculated rapidity distributions are found to agree with the data. A prediction for Pb+Pb at SPS-energies is compared with recent experimental results, and a possible signature of quark-gluon plasma formation is discussed.

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References

  1. E. Stenlund et al., Ed., Nucl. Phys. A 566 (1994).

  2. B. Andersson et al., Nucl. Phys. A 498 (1989) 93. K. Werner, Phys. Lett. B 208 (1988) 520.

    ADS  MathSciNet  Google Scholar 

  3. J. Stachel and P. Braun-Munzinger, Phys. Lett. B 216 (1989) 1.

    ADS  Google Scholar 

  4. G. Wolschin, preprint 1994, unpublished.

  5. NA 49 Collab., in “Proc. Quark Matter 1995”, Monterey; Nucl. Phys A590 (1995) 355c–366c.

  6. J.D. Bowman, W.J. Swiatecki and C.F. Tsang, LBL Report 2908 (1973) unpublished. G.D. Westfall et al., Phys. Rev. Lett. 37 (1976) 1202.

  7. G. Wolschin, Phys. Rev. Lett. 48 (1982) 1004.

    Article  ADS  Google Scholar 

  8. Zhang Jingshang and G. Wolschin, Z. Physik A 311 (1983) 177.

    ADS  Google Scholar 

  9. P. Grangé, J. Richert, G. Wolschin and H.A. Weidenmüller, Nucl. Phys. A 356 (1981) 260.

    ADS  Google Scholar 

  10. N.S. Amelin et al., Phys. Rev. Lett. 67 (1991) 1523.

    Article  ADS  Google Scholar 

  11. G. Wolschin, Ann. Physik 3 (1994) 276.

    Article  ADS  Google Scholar 

  12. NA 35 Collab., A. Bamberger et al., Phys. Lett. B 205 (1988) 583.

    ADS  Google Scholar 

  13. NA 35 Collab., J. Bächler et al., Z. Physik C 52 (1991) 239.

    ADS  Google Scholar 

  14. Helios (NA 34) Collab., T. Åkesson et al., Nucl. Phys. B 353 (1991) 1 and erratum, Nucl. Phys. B 357 (1991) 1.

    Article  ADS  Google Scholar 

  15. G. Wolschin, in “Nuclear Structure and Heavy-Ion Collisions” (R.A. Broglia, R.A. Ricci, C.H. Dasso, Eds.), Varenna, LXXVII Corso, pp. 508–571, North-Holland, Amsterdam 1918, and references therein.

    Google Scholar 

  16. J. Barrette et al., Phys. Rev. Lett. 70 (1993) 2996.

    Article  ADS  Google Scholar 

  17. H. Satz, Ann. Rev. Nucl. Part. Sci. 35 (1985) 245.

    Article  ADS  Google Scholar 

Download references

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Authors and Affiliations

  1. Keplerstrasse 30, D-69120, Heidelberg, Germany

    Georg Wolschin

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  1. Georg Wolschin
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Correspondence to Georg Wolschin.

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Communicated by B. Povh

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Wolschin, G. Diffusion model for relativistic heavy-ion collisions. Z. Physik A — Hadrons and Nuclei 355, 301–313 (1996). https://doi.org/10.1007/BF02769698

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  • DOI: https://doi.org/10.1007/BF02769698

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