First observation of the rare B[superscript +] → D[superscript +]K[superscript +]π[superscript −] decay
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PhysRevD.93.051101.pdf
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Author(s)
Aaij, R.
Abellán Beteta, C.
Adeva, B.
Adinolfi, M.
Affolder, A.
Ajaltouni, Z.
Akar, S.
Albrecht, J.
Alessio, F.
Alexander, M.
Date Issued
March 2016
Journal
Physical Review D
Publisher
American Physical Society
Citation
Aaij, R., C. Abellán Beteta, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, et al. “First Observation of the Rare B[superscript +] → D[superscript +]K[superscript +]π[superscript −] Decay.” Phys. Rev. D 93, no. 5 (March 3, 2016). © 2016 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[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 measured to be B(B[superscript +] → D[superscript +]K[superscript +]π[superscript -]) = (5.31 ± 0.90 ± 0.48 ± 0.35) × 10[superscript -6], where the uncertainties are statistical, systematic and due to the normalization mode B[superscript +] → D[superscript -]K[superscript +]π[superscript +], respectively. The Dalitz plot appears to be dominated by broad structures. Angular distributions are exploited to search for quasi-two-body contributions from B[superscript +] → D[* over 2](2460)[superscript 0]K[superscript +] and B[superscript +] → D[superscript +]K[superscript *](892)[superscript 0] decays. No significant signals are observed and upper limits are set on their branching fractions.
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.93.051101
