Spin alignment of vector Mesons K*0(892) and φ(1020) in Au+Au and p+p collsions at √sNN=200GeV

被引：0
作者：
Tang Ze-Bo [1 ]
机构：
[1] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China
来源：
HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION | 2007年 / 31卷 / 12期
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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：
We present the preliminary results on the spin alignment matrix element rho(00) for vector mesons K*(0)(892) and phi(1020) in mid-central (20%-60%) Au+Au and p+p collisions at root s(NN) = 200GeV. The values of rho(00) with respect to, reaction plane in Au+Au collisions are 0.36 +/- 0.02(stat)+/- 0.13(sys) for K*(0)(892) and 0.38 +/- 0.01 (stat)+/- 0.04(sys) for phi(1020). No evident global spin alignment with respect to reaction plane is observed in the measured PT region up to 5GeV/c with current sensitivity. rho(00) with respect to the production plane of the vector meson is also measured for K*0(892) and 4)(1020) in Au+Au collisions, and for ( (1020) in p+p collisions. No significant difference for the rho(00) between Au+Au and p+p collisions is observed with our data sample.
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页码：1192 / 1195
页数：4
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