newtxmath \hat{} problem in beamer

Question

Using the newtxmath package with beamer produces wrong output for the \hat{} command. I don't see the problem in the article mode. Also, using alternative packages such as times cause no problems. I am using TeX Live with kile under Linux Mint 14KDE.

\documentclass[handout,utf8]{beamer}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{newtxtext}
\usepackage{newtxmath}

\begin{document}

\begin{frame}
$\hat{\theta}$
\end{frame}

\end{document}

Any suggestion on how to fix this?

Answer 1

[Converting Comment To Answer]

You may use \usefonttheme{professionalfonts} or, equivalently, pass the option [professionalfonts] to beamer:

\documentclass[professionalfonts]{beamer}

so that the Beamer's internals do not rewrite the font schemes used.