Indiana Code Title 35. Criminal Law and Procedure § 35-50-2-13

Sec. 13. (a) The state may seek, on a page separate from the rest of a charging instrument, to have a person who allegedly committed an offense of dealing in a controlled substance under IC 35-48-4-1 through IC 35-48-4-4 sentenced to an additional fixed term of imprisonment if the state can show beyond a reasonable doubt that the person knowingly or intentionally:

(b) If the person was convicted of the offense in a jury trial, the jury shall reconvene to hear evidence in the enhancement hearing.  If the trial was to the court, or the judgment was entered on a guilty plea, the court alone shall hear evidence in the enhancement hearing.

(c) If the jury (if the hearing is by jury) or the court (if the hearing is to the court alone) finds that the state has proved beyond a reasonable doubt that the person knowingly or intentionally committed an offense as described in subsection (a), the court may sentence the person to an additional fixed term of imprisonment of not more than five (5) years, except as follows: