High Energy Physics - Experiment
[Submitted on 10 Mar 2015 (v1), last revised 21 Jun 2016 (this version, v3)]
Title:First observation and amplitude analysis of the $B^{-}\to D^{+}K^{-}π^{-}$ decay
View PDFAbstract:The $B^{-}\to D^{+}K^{-}\pi^{-}$ decay is observed in a data sample corresponding to $3.0~\rm{fb}^{-1}$ of $pp$ collision data recorded by the LHCb experiment during 2011 and 2012. Its branching fraction is measured to be ${\cal B}(B^{-}\to D^{+}K^{-}\pi^{-}) = (7.31 \pm 0.19 \pm 0.22 \pm 0.39) \times 10^{-5}$ where the uncertainties are statistical, systematic and from the branching fraction of the normalisation channel $B^{-}\to D^{+}\pi^{-}\pi^{-}$, respectively. An amplitude analysis of the resonant structure of the $B^{-}\to D^{+}K^{-}\pi^{-}$ decay is used to measure the contributions from quasi-two-body $B^{-}\to D_{0}^{*}(2400)^{0}K^{-}$, $B^{-}\to D_{2}^{*}(2460)^{0}K^{-}$, and $B^{-}\to D_{J}^{*}(2760)^{0}K^{-}$ decays, as well as from nonresonant sources. The $D_{J}^{*}(2760)^{0}$ resonance is determined to have spin~1.
Submission history
From: Charlotte Wallace [view email][v1] Tue, 10 Mar 2015 17:19:15 UTC (499 KB)
[v2] Wed, 6 May 2015 11:04:11 UTC (499 KB)
[v3] Tue, 21 Jun 2016 15:39:33 UTC (499 KB)
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