Phys. Rev. C 54, R2167–R2170 (1996)What information can we obtain from the yield ratio π-/π+ in heavy-ion collisions?
Data on the π-/π+ ratio in heavy-ion collisions are analyzed by theoretical formula. It accounts for Coulomb interaction between central charged fragment consisting of stopped nucleons with effective charge Zeff and charged π's. The Coulomb wave function method is used in order to account for the finite π production range β. For the Gaussian source function it results in a quasiscaling in β and Zeff, which makes determination of β and Zeff difficult. Only sufficiently accurate data taken in the extreme small mT-mπ region, where this quasiscaling is broken, could be used for this purpose. © 1996 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevC.54.R2167
DOI:
10.1103/PhysRevC.54.R2167
PACS:
25.75.Dw, 03.65.Ca
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