First observation of the rare B[superscript +] → D[superscript +]K[superscript +]π[superscript −] decay
R. Aaij, C. Abellán Beteta, B. Adeva, M. Adinolfi et autres
The B[superscript +] →D[superscript +]K[superscript +]π[superscript -] decay is observed in a data sample corresponding to 3.0 fb[superscript -1] of pp collision data recorded by the LHCb experiment during 2011 and 2012. The signal significance is 8σ and the branching fraction is …