Recent Heavy-Flavor Results Utilizing the FVTX in PHENIX at RHIC

被引:0
|
作者
Li, Xuan [1 ]
机构
[1] LANL, Div Phys, P-25,MS 14846, Los Alamos, NM 87545 USA
关键词
COLLISIONS;
D O I
10.1088/1742-6596/779/1/012027
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Heavy-flavor and quarkona production are important hard probes to test Quantum Chromodynamics (QCD) and measure the properties of the Quark Gluon Plasma (QGP) created in high energy heavy ion collisions. The new PHENIX mid- and forward-rapidity silicon vertex detectors provide precise Distance of Closest Approach (DCA) determination, allowing charm and bottom yields identification, and improve di-muon mass resolution for charmonia studies. The relative psi(2S) over J/psi(1S) yields measured in p+p, p+Al and p+Au data at root s = 200 GeV help us to understand final state effects on the charmonia production. Direct access to B-meson production has been enabled via measurements of non-prompt J/psi -> mu(+) + mu(-) in p+p collisions at root s = 510 GeV and Cu+Au collisions at root s = 200 GeV. The fraction of B-meson decays in J/psi yields in the p+p measurement agrees with higher energy results from Tevatron and the LHC. This fraction is enhanced in Cu+Au collisions suggesting the B-meson yield is not modified by the medium whereas J/psi is strongly suppressed.
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