Constraints on the unitarity triangle angle $\gamma$ from Dalitz plot analysis of $B^0\to D{K}^{+}{\pi }^{-}$ decays

Abstract

The first study is presented of CP violation with an amplitude analysis of the Dalitz plot of $B^0\to D{K}^{+}{\pi }^{-}$ decays, with $D\to K^{+}{\pi }^{-}$, $K^{+}{K}^{-}$ and ${\pi }^{+}{\pi }^{-}$. The analysis is based on a data sample corresponding to $3.0{\mathrm{fb}}^{-1}$ of $pp$ collisions collected with the LHCb detector. No significant CP violation effect is seen, and constraints are placed on the angle $\gamma$ of the unitarity triangle formed from elements of the Cabibbo-Kobayashi-Maskawa quark mixing matrix. Hadronic parameters associated with the $B^0\to D{K}^{\ast }(892{)}^0$ decay are determined for the first time. These measurements can be used to improve the sensitivity to $\gamma$ of existing and future studies of the $B^0\to D{K}^{\ast }(892{)}^0$ decay.

arXiv commentAll figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2015-059.html; updated to correct figure 9 (numerical results unchanged)

References in corpus (42)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• A Brief Introduction to PYTHIA 8.1
• Big-Bang Nucleosynthesis
• CP Violation and the CKM Matrix: Assessing the Impact of the Asymmetric B Factories
• LHCb Detector Performance
• PHOTOS Monte Carlo: a precision tool for QED corrections in Z and W decays
• sPlot: a statistical tool to unfold data distributions
• Recent Progress in Baryogenesis
• Performance of the LHCb RICH detector at the LHC
• Enhanced CP Violation with $B\to K{D}^0({\overline{D}}^0)$ Modes and Extraction of the CKM Angle gamma
• The 2004 UTfit Collaboration Report on the Status of the Unitarity Triangle in the Standard Model
• Waiting for the Top Quark Mass, K^+ --> π^+ ν\barν, B_s^0-\bar{B}_s^0 Mixing and CP Asymmetries in B-Decays
• Improved Methods for Observing CP Violation in B+/- --> K+/- D0 and Measuring the CKM Phase gamma
• Search for the decay $B_s^0\to {\overline{D}}^0{f}_0(980)$
• Dalitz plot analysis of $B_s^0\to {\bar{D}}^0{K}^{-}{\pi }^{+}$ decays
• Dalitz plot analysis of $B^0\to {\overline{D}}^0{\pi }^{+}{\pi }^{-}$ decays
• The ultimate theoretical error on gamma from B -> D K decays
• Study of $D_J$ meson decays to $D^{+}{\pi }^{-}$, $D^0{\pi }^{+}$ and $D^{\ast +}{\pi }^{-}$ final states in pp collision
• Improving bounds on $\gamma$ in $B^{\pm }\to D{K}^{\pm }$ and $B^{\pm ,0}\to D{X}_s^{\pm ,0}$
• Observation of overlapping spin-1 and spin-3 ${\bar{D}}^0{K}^{-}$ resonances at mass $2.86\mathrm{GeV}/c^2$
• Measurement of the CKM angle gamma from a combination of B->Dh analyses
• Measurement of the difference of time-integrated CP asymmetries in $D^0\to K^{-}{K}^{+}$ and $D^0\to {\pi }^{-}{\pi }^{+}$ decays
• Studies of beauty baryon decays to $D^{0}p{h}^{-}$ and ${\Lambda }_c^{+}{h}^{-}$ final states
• Amplitude analysis of $B^0\to {\bar{D}}^0{K}^{+}{\pi }^{-}$ decays
• Study of $\overline{B^0}\to D^0{\pi }^{+}{\pi }^{-}$ decays
• On the Measurement of the Unitarity Triangle Angle gamma from B^0 -> DK^{*0} Decays
• Dalitz plot analyses of $B^0\to D^{-}{D}^0{K}^{+}$ and $B^{+}\to {\overline{D}}^0{D}^0{K}^{+}$ decays
• Measurement of indirect $CP$ asymmetries in $D^0\to K^{-}{K}^{+}$ and $D^0\to {\pi }^{-}{\pi }^{+}$ decays using semileptonic $B$ decays
• Measurement of the B0bar-B0 and Bsbar-Bs production asymmetries in pp collisions at sqrt(s)=7 TeV
• Measurement of CP violation parameters in B0->D K*0 decays
• Prospects for the Measurement of the Unitarity Triangle Angle gamma from B0 to DK+pi- Decays
• Observation of the decay B0 -> D0bar K+ K- and evidence for Bs -> D0bar K+ K-
• First observations of ${\bar{B}}_s^0\to D^{+}{D}^{-}$, $D_s^{+}{D}^{-}$ and $D^0{\bar{D}}^0$ decays
• Observation of $B_s^0$-${\bar{B}}_s^0$ mixing and measurement of mixing frequencies using semileptonic B decays
• Search for b-> u transitions in B0 -> D0 K*0 decays
• Constraints on the CKM angle gamma in B^0 --> barD^0 (D^0) K^*0 from a Dalitz analysis of D^0 --> K_S pi^+ pi^-
• Observation of the decay $B_s^0\to {\bar{D}}^0\varphi$
• First evidence for the annihilation decay mode $B^{+}\to D_s^{+}\varphi$
• Search for the decay $B^0\to D{K}^{\ast 0}$ followed by $D\to K^{-}{\pi }^{+}$
• First model-independent Dalitz analysis of $B^0\to D{K}^{\ast 0}$, $D\to K_S^0{\pi }^{+}{\pi }^{-}$ decay
• First observation of the rare $B^{+}\to D^{+}{K}^{+}{\pi }^{-}$ decay

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