Updated in the standard model at higher orders
arXiv:1405.4907
Abstract
The latest standard model predictions of rare leptonic B_q --> l^+ l^- decays are reviewed including recent results of next-to-leading electroweak and next-to-next-to-leading QCD corrections.
6 pages, Proceedings of the 49th Rencontres de Moriond, Electroweak Interactions and Unified Theories session, March 15th-22nd, 2014, La Thuile, Italy