Decoding (pseudo)-scalar operators in leptonic and semileptonic B decays Giovanni Banelli, Robert Fleischer, Ruben Jaarsma and Gilberto Tetlalmatzi-Xolocotzi Eur. Phys. J. C, 78 11 (2018) 911 Published online: 10 November 2018 DOI: 10.1140/epjc/s10052-018-6393-9