Measurement of the CKM angle $\gamma$ with $B^{\pm }\to D[K^{\mp }{\pi }^{\pm }{\pi }^{\pm }{\pi }^{\mp }]h^{\pm }$ decays using a binned phase-space approach

Abstract

The CKM angle $\gamma$ is determined from $CP$-violating observables measured in $B^{\pm }\to D[K^{\mp }{\pi }^{\pm }{\pi }^{\pm }{\pi }^{\mp }]h^{\pm }$, $(h=K,\pi )$ decays, where the measurements are performed in bins of the decay phase-space of the $D$ meson. Using proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of $7,8$ and $13\text{TeV}$, corresponding to a total integrated luminosity of $9{\text{fb}}^{-1}$, $\gamma$ is determined to be \begin{equation*} γ= \left( 54.8 \: ^{+\:6.0 }_{-\:5.8} \: ^{+\:0.6}_{-\:0.6} \: ^{+\:6.7}_{-\:4.3} \right)^\circ, \end{equation*} where the first uncertainty is statistical, the second systematic and the third from the external inputs on the coherence factors and strong phases of the $D$-meson decays.

arXiv commentAll figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-017.html (LHCb public pages)

References in corpus (12)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• A Brief Introduction to PYTHIA 8.1
• LHCb Detector Performance
• Performance of the LHCb RICH detector at the LHC
• Decay Chain Fitting with a Kalman Filter
• Improved performance of the LHCb Outer Tracker in LHC Run 2
• The ultimate theoretical error on gamma from B -> D K decays
• Role of Charm Factory in Extracting CKM-Phase Information via B --> DK
• ReDecay: A novel approach to speed up the simulation at LHCb
• Mixing and $CP$ violation in the charm system
• Improved sensitivity to the CKM phase $\gamma$ through binning phase space in $B^{-}\to D{K}^{-}$, $D\to K^{+}{\pi }^{-}{\pi }^{-}{\pi }^{+}$ decays

Cited by in corpus (1)

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