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I need chi letter as the one to the right: enter image description here

My issue is that when I either use $\chi$ or \textgreek{q} I don't get what I wish to. I would also be happy with U+03C7 unicode character, but I don't want to use XeTeX but LaTeX instead. I've read this post but I couldn't solve my problem with this...

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That's the chi in the Symbol Adobe font.

\documentclass{article}
\usepackage{mathptmx}
\usepackage{amsmath}

\newcommand{\upchi}{\text{\usefont{U}{psy}{m}{n}\symbol{'143}}}

\begin{document}

X\upchi

$\upchi+X_{\upchi}$

\end{document}

enter image description here

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