If a court case is plea bargained, What is the court session called when they are sentenced?

Answer 1

Sentencing. The judge still has the right to accept or reject the plea bargain. The judge still pronounces sentence. The judge also ensures that the plea bargain is entered into knowingly, voluntarily and without any duress.

Answer 2

Sentencing

Answer 3

Sentencing hearing.

Also sometimes called an "allocution", but that specifically refers to the action of pleading guilty and stating what the defendant did.