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First observation of the rare B[superscript +] → D[superscript +]K[superscript +]π[superscript −] decay

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First observation of the rare B[superscript +] → D[superscript +]K[superscript +]π[superscript −] decay

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Author: Aaij, R.; Abellán Beteta, C.; Adeva, B.; Adinolfi, M.; Affolder, A.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Alkhazov, G.; Alvarez Cartelle, P.; Alves, A. A.; Amato, S.; Amerio, S.; Amhis, Y.; An, L.; Anderlini, L.; Andreassi, G.; Andreotti, M.; Andrews, J. E.; Appleby, R. B.; Aquines Gutierrez, O.; Archilli, F.; d’Argent, P.; Artamonov, A.; Artuso, M.; Aslanides, E.; Auriemma, G. ... [more in full view]
Department: Massachusetts Institute of Technology. Laboratory for Nuclear Science; Massachusetts Institute of Technology. Department of Physics
Publisher: American Physical Society
Date Issued: 2016-3
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.
URI: http://hdl.handle.net/1721.1/101604
ISSN: 2470-0010
2470-0029
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
Terms of Use: Creative Commons Attribution
Detailed Terms: http://creativecommons.org/licenses/by/3.0
Published As: http://dx.doi.org/10.1103/PhysRevD.93.051101
Journal: Physical Review D

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