POLL-U.S. headed for shallow recession, no respite from rate hikes yet

BENGALURU, Dec 9- The U.S. economy is headed for a short, shallow recession over the next year, according to economists polled by Reuters, who unanimously expect the Federal Reserve to opt for a smaller 50 basis point interest rate hike on Dec. 14. The Fed has at least another half-point to raise rates early in the new year, with inflation still well above the 2% target,…