Study of the sensitivity to CKM angle $\gamma$ under simultaneous determination from multiple $B$ meson decay modes

Abstract

Several methods exist to measure $CP$ violation observables related to the CKM unitarity triangle angle $\gamma$ using $B$ meson decays. These observables are different for every $B$ meson decay considered, although the information they contain on $\gamma$ is encoded in a similar way for all of them. This paper describes a strategy for a simultaneous measurement of $\gamma$ using several $B$ meson decays that takes into account possible correlations between them. Sensitivity studies demonstrate that the simultaneous analysis of several $B$ meson decay modes results in smaller uncertainties and improved statistical behaviour compared to a combination of standalone measurements.

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Cited by in corpus (6)

• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2021
• Measurement of the CKM angle $\gamma$ in $B^{\pm }\to D{K}^{\pm }$ and $B^{\pm }\to D{\pi }^{\pm }$ decays with $D\to K_{\mathrm{S}}^0{h}^{+}{h}^{-}$
• A model-independent measurement of the CKM angle $\gamma$ in the decays $B^{\pm }\to [K^{+}{K}^{-}{\pi }^{+}{\pi }^{-}{]}_D{h}^{\pm }$ and $B^{\pm }\to [{\pi }^{+}{\pi }^{-}{\pi }^{+}{\pi }^{-}{]}_D{h}^{\pm }$ ($h=K,\pi$)
• A model-independent measurement of the CKM angle $\gamma$ in partially reconstructed $B^{\pm }\to D^{\ast }{h}^{\pm }$ decays with $D\to K_S^0{h}^{+}{h}^{-}$ $(h=\pi ,K)$
• Measurement of the CKM angle $\gamma$ using the $B^{\pm }\to D^{\ast }{h}^{\pm }$ channels
• Combined analysis of Belle and Belle II data to determine the CKM angle ${\varphi }_3$ using $B^{+}\to D(K_S^0{h}^{-}{h}^{+})h^{+}$ decays