Isolation of the nuclear compressibility with the balance energy

Magestro, D. J.; Bauer, W.; Westfall, G. D.

doi:10.1103/PhysRevC.62.041603

Isolation of the nuclear compressibility with the balance energy

D. J. Magestro
(
- Michigan State U.
)
,
W. Bauer
(
- Michigan State U.
)
,
G. D. Westfall
(
- Michigan State U.
)

2000

4 pages

Published in:

Phys.Rev.C 62 (2000) 041603

DOI:

10.1103/PhysRevC.62.041603

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Abstract: (APS)

Previous theoretical studies of the disappearance of directed transverse flow showed a dual dependence on the equation of state (EOS) and the in-medium cross section (σnn) for light systems. Also, the balance energy was shown to increase as a function of the impact parameter. However, Boltzmann-Uehling-Uhlenbeck (BUU) model calculations show that the dependence on σnn weakens for heavy systems such as Au+Au, and data presented here show that the impact parameter dependence nearly vanishes for Au+Au. Therefore, the EOS parameter K can be isolated using the balance energy, and BUU calculations show good agreement for a soft EOS. The reduction in σnn is then investigated using the experimental mass dependence of the balance energy.

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