Elliptic flow of η and πo mesons in heavy-ion collisions at 2 A GeV

被引：2
|
作者：
Taranenko, A [1 ]
Kugler, A [1 ]
机构：
[1] Nucl Res Inst, CZ-25068 Rez, Czech Republic
来源：
CZECHOSLOVAK JOURNAL OF PHYSICS | 2000年 / 50卷
关键词：
D O I：
10.1007/s10582-000-0050-9
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Azimuthal distributions of both eta and pi (0) masons emitted at midrapidity are studied in collisions of 1.9 A GeV Ni-58 + Ni-58 and 2 A GeV Ca-40 + Ca-nat. The observed anisotropy corresponds to a negative elliptic flow signal for eta mesons, indicating a preferred emission perpendicular to the reaction plane. In contrast, only small azimuthal anisotropies are observed for pi (0) mesons. This may indicate that eta mesons freeze out earlier from the central interaction region than pions.
引用
收藏
页码：139 / 166
页数：28
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