First observation and amplitude analysis of the B−→D+K−π− decay
Publication date
2015-05-05Abstract
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.
Document Type
Article
Published version
Language
English
Subject (CDU)
539 - Physical nature of matter
Keywords
Pages
24 p.
Publisher
American Physical Society
Is part of
Physical Review D, 2015, Vol.91, No.9 (Maig)
This item appears in the following Collection(s)
Rights
© CERN
Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by/4.0/