Unicode greek letter or new greek letter

I need chi letter as the one to the right:

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...

• When you say "LaTeX", do you mean latex or pdflatex? If the latter, then my answer here, tex.stackexchange.com/questions/145926/…, may be of some use (though you just made me realize I didn't demonstrate the technique on chi). Using that approach, with mathptmx, I find that \unslant[-.15]\chi gives a good rendition of your letter. – Steven B. Segletes Nov 12 '15 at 20:26
• what document class and what fonts are you using? (a useful answer may depend on the identity of both.) – barbara beeton Nov 12 '15 at 20:30
• I am using book class and times fonts. – user2300369 Nov 12 '15 at 20:38
• Since you have some responses below that seem to answer your question, please consider marking one of them as ‘Accepted’ by clicking on the tickmark below their vote count (see How do you accept an answer?). This shows which answer helped you most, and it assigns reputation points to the author of the answer (and to you!). It's part of this site's idea to identify good questions and answers through upvotes and acceptance of answers. – user36296 Jul 13 '17 at 18:52

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}