I need to understand how to convert the following Latex so Mathematica can accept some alternative version of \hbar such as {HBar], ℏ or hbar:

$\frac{m_{e}}{2 \pi \frac{\hbar}{m_{e} c^{2}}} \cdot \frac{c^{2} \frac{\hbar}{m_{e} c}}{2 G m_{e}}$

I've tried replacing it with {HBar], ℏ, hbar and \operatorname{hbar} none of which work when I paste the string as Latex into Mathematica. Putting just plain hbar inplace of \hbar results in the product of variables h b a r

For instance, \hbar results in the error:

The wrong number of arguments (1) was given to a box ("FractionBox") in the BoxForm of the expression. Check the format rules for the expression.

However, alpha handles it properly: