RHIC半轻子衰变的粲产生截面和轻子的测量
Measurement of charm production cross-section and leptons from its semileptonic decay at RHIC
摘要：
在本论文中，我们测量了低$p_T$的$D^{0}\to Kπ$（$p_T\leq2$ GeV/ $c$）和$D^0$半轻子衰变的非光子电子谱（$0.9\leq p_T\leq5$ GeV/ $c$）。此外，我们使用一个新提出的技术，以确定在低$p_T$的粲衰变μ子。所有这三个测量的组合严格地限制了RHIC中快度时的总粲产生截面。它们还允许提取的魅力强子光谱形状和研究可能的魅力径向流在金+金碰撞。
英文摘要：
In this thesis, we present the measurements of $D^{0}\to Kπ$ at low $p_T$ ($p_T\leq2$ GeV/$c$) and non-photonic electron spectra ($0.9\leq p_T\leq5$ GeV/$c$) from $D^0$ semi-leptonic decay. In addition, we use a newly proposed technique to identify muons from charm decays at low $p_T$. The combination of all these three measurements stringently constrains the total charm production cross-section at mid-rapidity at RHIC. They also allow the extraction of the charmed hadron spectral shape and a study of possible charm radial flow in Au+Au collisions.
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