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Freezeout conditions and pion spectrum in heavy ion collisions

Authors
  • Gorenstein, Mark I.
  • Tsai, Meng-Shiang
  • Yang, Shin-Nan
Publication Date
Jan 01, 1987
Identifiers
DOI: 10.1103/PhysRevC.51.1465
OAI: oai:inspirehep.net:259029
Source
INSPIRE-HEP
License
Unknown
External links

Abstract

Pion multiplicity and energy spectrum in medium energy heavy-ion collisions are analyzed in a model with spherical expansion, resonance decay contribution, and chemical nonequilibrium effects. fitting the data for central La+La collision at Elab=1.35 GeV/nucleon we find that the physically reasonable freeze-out conditions require a strong collective motion to describe the pion spectrum and a positive value of pion chemical potential to fit the total pion multiplicity. The data do not lend to conclusive evidence on the presence of Δ resonance at the freeze-out.

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