The B- → D+K-π- decay is observed in a data sample corresponding to 3.0 fb-1 of pp collision data recorded by the LHCb experiment during 2011 and 2012. Its branching fraction is measured to be B(B- → D+K-π-)=(7.31±0.19±0.22±0.39)×10-5 where the uncertainties are statistical, systematic and from the branching fraction of the normalization channel B- → D+π-π-, respectively. An amplitude analysis of the resonant structure of the B- → D+K-π- decay is used to measure the contributions from quasi-two-body B-→ D∗0(2400)0K-, B- → D∗2(2460)0K-, and B- → D∗J(2760)0K- decays, as well as from nonresonant sources. The D∗J(2760)0 resonance is determined to have spin 1.
|Number of pages||24|
|Journal||Physical Review D - Particles, Fields, Gravitation and Cosmology|
|Publication status||Published - 5 May 2015|
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)