By Stephen Culp NEW YORK (Reuters) – U.S. stocks jumped, the dollar slid and Treasury yields dropped on Thursday as cooler-than-expected inflation data suggested the Federal Reserve’s barrage of interest rate hikes are beginning to have their intended effect. All three major U.S. stock indexes took off from the starting gate, with the S&P 500 charting a course for its biggest one-day jump since April 2020. The risk-on fervor also sent the benchmark Treasury yield to its lowest level in five weeks and the safe-haven greenback plunged. “I’m surprised at the gain relative to the slight drop in in…