单元格表中的对齐文本

Question

我不确定如何命名我的问题，但我想实现的是（在 beamer 框架中）两列，一列由数学对象组成，另一列面向它描述对象。我遇到的问题是，我似乎无法对齐右列的文本。

\documentclass{beamer}

\usepackage[utf8]{inputenc}
\usepackage{stmaryrd}
\usepackage{array}
\usepackage{amsmath}
\usepackage{booktabs}
\usepackage{ragged2e}
\usepackage{multirow}
\usepackage{bbold}
\usetheme{Madrid}

\begin{document}

\begin{frame}

\begin{table}
 \centering
 \begin{tabular}{>{$}l<{$}>{\raggedright\arraybackslash}p{9cm}}
 (X, \mathcal{X}) & a metric space of alternatives and its Borel $\sigma$-algebra\\
 \mathbf{Q} & a metric space of budgets, seen as an index \\
\mathbf{B}(q) & a non-empty set in $\mathcal{X}$, denoting the possible alternatives given a budget $q \in \mathbf{Q}$ \\
\mathbf{d} :\mathbf{Q} \to \mathcal{X} & a decision function, $\emptyset \subset \mathbf{d}(q) \subseteq \mathbf{B}(q)$, decisive if $\# \mathbf{d}(q) = 1$ \\
(q, \mathbf{C}) & a trial, $q \in \mathbf{Q}$ and $C \in \mathcal{X}$, that is a succes if $\mathbf{d}(q) \subseteq \mathbf{C}$, failure if $d(q) \cap \mathbf{C} = \emptyset$, partial success if $\mathbf{d}(q) \cap \mathbf{C} \neq \emptyset$ \\
 \end{tabular}
\end{table}

\end{frame}

\end{document}

有人能知道如何证明右栏文字的正确性吗？

真挚地，

奥利维尔