Small font size for ampersand

Question

I want & symbol in small font size. But \small{\&} produces italicized ampersand symbol like here. How can I get the small fontsize & symbol?

Edit: figured out that, the italics was because of the theorem environment (from acm_proc_article-sp style). Is there any way to override italics only for & character?

Answer 1

\small doesn't take an argument. Use it like \small \&. To make the effect local, put the entire thing inside braces like {\small \&}

\documentclass{article}
\begin{document}

\Huge \& \huge \& \LARGE \& \large \& \normalsize \& \small \& \footnotesize \&  \scriptsize \& \tiny \&
\end{document}

Edit

In math mode I get this:

\documentclass{article}
\usepackage{amsmath}
\begin{document}
\[
E_{1} \& \text{\small\&} E_{2}
\]
\end{document}

If this is what you are not getting, then something else is going on in your code. Please try posting it so that we can play with it :-)