Measurement of the ratio of branching fractions B (B+c→J [psi] [tau] + [nu] [tau])/B(B+c→J/[psi] [mu] + [nu] [mu]) - Aaij, Roel; D'Argent, Philippe; Bachmann, Sebastian; Berninghoff, Daniel; Braun, Svende; Comerma-Montells, Albert; De Cian, Michel; Dziewiecki, Michal; Gerick, David; Grabowski, Jascha; Grünberg, Oliver; Han, Xiaoxue; et al. (Physical review letters, 2018)
published 23 March 2018; corrected 4 April 2018