Effects of the modified Δ spectral function and of the coulomb interaction on the charged pions in Au + Au collisions at 1A GeV

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Abstract

We present the results of thermal model calculations including both a modification of the Δ (1232) spectral function and the Coulomb interaction. The model calculations are compared with the published pion spectra for central Au + Au collisions at 1A GeV. The freeze-out radius of the fireball is deduced to be about 6.3 fm by using an est mated Coulomb potential. The percentage of participant nucleons which are excited to the Δ(1232) resonance in large collision systems is reduced compared to that in small collision systems.

Original languageEnglish
JournalJournal of the Korean Physical Society
Volume38
Issue number4
Publication statusPublished - 2001 Apr 1

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pions
collisions
fireballs
interactions
Coulomb potential
nucleons
radii

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

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title = "Effects of the modified Δ spectral function and of the coulomb interaction on the charged pions in Au + Au collisions at 1A GeV",
abstract = "We present the results of thermal model calculations including both a modification of the Δ (1232) spectral function and the Coulomb interaction. The model calculations are compared with the published pion spectra for central Au + Au collisions at 1A GeV. The freeze-out radius of the fireball is deduced to be about 6.3 fm by using an est mated Coulomb potential. The percentage of participant nucleons which are excited to the Δ(1232) resonance in large collision systems is reduced compared to that in small collision systems.",
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N2 - We present the results of thermal model calculations including both a modification of the Δ (1232) spectral function and the Coulomb interaction. The model calculations are compared with the published pion spectra for central Au + Au collisions at 1A GeV. The freeze-out radius of the fireball is deduced to be about 6.3 fm by using an est mated Coulomb potential. The percentage of participant nucleons which are excited to the Δ(1232) resonance in large collision systems is reduced compared to that in small collision systems.

AB - We present the results of thermal model calculations including both a modification of the Δ (1232) spectral function and the Coulomb interaction. The model calculations are compared with the published pion spectra for central Au + Au collisions at 1A GeV. The freeze-out radius of the fireball is deduced to be about 6.3 fm by using an est mated Coulomb potential. The percentage of participant nucleons which are excited to the Δ(1232) resonance in large collision systems is reduced compared to that in small collision systems.

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