CAN  THE  ACCUSED  MOVE  FOR  A  NEW  TRIAL  IF  HE  HAS  FOUND EVIDENCE THAT WOULD IMPEACH  THE TESTIMONY GIVEN BY  THE PROSECUTION WITNESS?

     No,  evidence  which  merely  seeks  to  impeach  the  evidence  upon which the conviction was based will not constitute grounds for new trial, unless it is shown that there is no other evidence sustaining the judgment of conviction except the testimony of the retracting witness.

     It has to be material evidence

WHEN IS EVIDENCE CONSIDERED TO BE MATERIAL?

     It is material if there is reasonable likelihood that the testimony or evidence  could  have  been  produced  a  different  result  and  the accused would have been acquitted