LONDON, Aug 22 (Reuters) - Brevan Howard Asset Management plans to launch a new hedge fund betting on shifting monetary policy, two sources familiar with the matter said, as a decade of money printing by central banks and zero interest rates comes to an end. The new fund, to be led by interest rates trader Fash Golchin, is the third to be launched by an individual portfolio manager at the firm founded by billionaire Alan Howard in recent months, the sources said. They will all bet on diverging central bank strategies across the globe, the sources added.