First observation and amplitude analysis of the B[superscript -] → D[superscript +]K[superscript -]π[superscript -] decay
Name
PhysRevD.91.092002.pdf
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1.16 MB
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Checksum (MD5)
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Author(s)
Aaij, R.
Adeva, B.
Adinolfi, M.
Affolder, A.
Ajaltouni, Z.
Akar, S.
Albrecht, J.
Alessio, F.
Alexander, M.
Ali, S.
Date Issued
May 2015
Journal
Physical Review D
Publisher
American Physical Society
Citation
Aaij, R., et al. "First observation and amplitude analysis of the B[superscript -] → D[superscript +]K[superscript -]π[superscript -] decay." Phys. Rev. D 91, 092002 (May 2015). © 2015 CERN, for the LHCb Collaboration
Version
Final published version
Abstract
The B[superscript -] → D[superscript +]K[superscript -]π[superscript -] 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[superscript -] → D[superscript +]K[superscript -]π[superscript -]) = (7.31 ± 0.19 ± 0.22 ± 0.39) × 10[superscript -5] where the uncertainties are statistical, systematic and from the branching fraction of the normalization channel B[superscript -] → D[superscript +]π[superscript -]π[superscript -], respectively. An amplitude analysis of the resonant structure of the B[superscript -] → D[superscript +]K[superscript -]π[superscript -] decay is used to measure the contributions from quasi-two-body B[superscript -] → D[* over 0](2400)[superscript 0]K[superscript -], B[superscript -] → D[* over 2](2460)[superscript 0]K[superscript -], and B[superscript -] → D[* over J](2760)[superscript 0]K[superscript -] decays, as well as from nonresonant sources. The D[* over J](2760)[superscript 0] resonance is determined to have spin 1.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevD.91.092002
