Coulomb effects on particle spectra in relativistic nuclear collisions

被引：31

作者：

Barz, HW

Bondorf, JP

Gaardhoje, JJ

Heiselberg, H

机构：

[1] Rossendorf Inc, Forschungszentrum Rossendorf EV, D-01314 Dresden, Germany

[2] Niels Bohr Inst, DK-2100 Copenhagen, Denmark

[3] NORDITA, DK-2100 Copenhagen, Denmark

来源：

PHYSICAL REVIEW C | 1998年 / 57卷 / 05期

关键词：

D O I：

10.1103/PhysRevC.57.2536

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Coulomb effects on pi(+/-) and K+/- spectra in relativistic nuclear collisions are investigated. At collision energies around 1 GeV the ratio of pi(-) to pi(+) is enhanced several times at low transverse momenta but less at ultrarelativistic energies. We describe the ratios at SIS, AGS, and SPS energies with simple analytic models as well as more elaborate numerical models incorporating the expansion dynamics. The Coulomb effect depends on the properties of the source after the violent collision phase and provides information on source sizes, freeze-out times, and expansion velocities. Comparison with results from HBT analyses are made. Predictions for pi(+/-) and K+/- at RHIC and LHC energies are given. [S0556-2813(98)02105-0].

引用

页码：2536 / 2546

页数：11

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