ACKSON — Georgia’s longest-serving death row inmate was executed Tuesday in the slaying of his wife 34 years ago. Jack Alderman was pronounced dead at 7:25 p.m. at the state prison in Jackson. The 57-year-old Alderman was sentenced to die by lethal injection in the 1974 slaying of his wife, Barbara. He and an accomplice beat her with a crescent wrench and choked her at their Chatham County home before dumping her body in a creek. Prosecutors allege he wanted to collect $20,000 in life insurance money. Alderman has been on death row for 33 years.