Tennessee Code Title 40. Criminal Procedure § 40-35-402

(a) The district attorney general in a criminal case may appeal from the length, range or manner of the service of the sentence imposed by the sentencing court. The district attorney general may also appeal the imposition of concurrent sentences. In addition, the district attorney general may also appeal the amount of fines and restitution imposed by the sentencing court. An appeal pursuant to this section shall be taken within the same time and in the same manner as other appeals in criminal cases. The right of the appeal of the state is independent of the defendant's right of appeal.

(b) An appeal from a sentence is limited to one (1) or more of the following conditions:

(c) If the sentence is appealed by the state, the appellate court may affirm, vacate, set aside, increase or reduce the sentence imposed or remand the case or direct the entry of an appropriate order.

(d) When reviewing sentencing issues raised pursuant to this section, the appellate court shall conduct a de novo review on the record of the issues. The review shall be conducted with a presumption that the determinations made by the court from which the appeal is taken are correct.