Differential measurements of φ-meson global spin alignment in Au plus Au collisions at STAR

被引：0
|
作者：
Wilks, Gavin [1 ]
机构：
[1] Univ Illinois, 1200 Harrison, Chicago, IL 60607 USA
来源：
21ST INTERNATIONAL CONFERENCE ON STRANGENESS IN QUARK MATTER, SQM 2024 | 2025年 / 316卷
关键词：
D O I：
10.1051/epjconf/202531606014
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
The STAR collaboration observed a significant global spin alignment (rho(00)) signal for.-mesons in Au+Au collisions using the data from the BES-I [1] which cannot be explained by conventional mechanisms, but may be attributable to the influence of phi-meson force field [2-6]. In this talk, we present differential measurements of phi-meson global spin alignment using the STAR detector in Au+Au collisions at root s(NN) = 14.6 and 19.6 GeV from the second phase of the Beam Energy Scan at RHIC (BES-II). The first rapidity (y) dependent rho(00) results for.-mesons will be shown, alongside new centrality and transverse momentum ( p(T)) dependent measurements. The results presented in these proceedings will help understand the potential link of global spin alignment to vector meson fields and their roles in the evolution of nuclear matter.
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