Probing meson spectral functions with double differential dilepton spectra in heavy-ion collisions

被引：5

作者：

Kämpfer, B

Pavlenko, OP

机构：

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

[2] Inst Theoret Phys, UA-252143 Kiev 143, Ukraine

来源：

EUROPEAN PHYSICAL JOURNAL A | 2001年 / 10卷 / 01期

关键词：

D O I：

10.1007/s100500170149

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：

The double differential dilepton spectrum dN/(dM(2) dM(perpendicular to)(2)) at fixed transverse mass M-perpendicular to allows a direct access to the vector meson spectral functions. Within a fireball model the sensitivity of dN/(dM(2) dM(perpendicular to)(2)) against variations of both the in-medium properties of mesons and the dynamics of the fireball is investigated. In contrast to the integrated invariant-mass spectrum dN/dM(2), in the spectrum dN/(dM(2) dM(perpendicular to)(2)) with fixed M-perpendicular to the omega signal is clearly seen as bump riding on the rho background even in case of strong in-medium modifications.

引用

页码：101 / 107

页数：7

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