Prospects for the Measurement of the Unitarity Triangle Angle gamma from B0 to DK+pi- Decays

Abstract

The potential for a precise measurement of the Unitarity Triangle angle $\gamma$ in future experiments from the decay $B^0\to D{K}^{\ast 0}$ is well-known. It has recently been suggested that the sensitivity can be significantly enhanced by analysing the $B^0\to D{K}^{+}{\pi }^{-}$ Dalitz plot to extract amplitudes relative to those of the flavour-specific decay $B^0\to D_2^{\ast -}{K}^{+}$. An extension to this method which includes the case where the neutral $D$ meson is reconstructed in suppressed final states is presented. The sensitivity to $\gamma$ is estimated using this method and compared to that obtained using the $B^0\to D{K}^{\ast 0}$ decay alone. Experimental effects, such as background contamination, are also considered. This approach appears to be a highly attractive addition to the family of methods that can be used to determine $\gamma$.

12 pages, 10 figures. v2 as published

References in corpus (3)

• Measurement of phi_3 with Dalitz plot analysis of B+ -> D(*)K(*)+ decay
• Determination of the D0 -> K+pi- Relative Strong Phase Using Quantum-Correlated Measurements in e+e- -> D0 D0bar at CLEO
• On the Measurement of the Unitarity Triangle Angle gamma from B^0 -> DK^{*0} Decays

Cited by in corpus (7)

• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2021
• Measurement of the CKM angle $\gamma$ from a combination of LHCb results
• CP violation in the B system
• Quasi-two-body decays $B_{(s)}\to P{D}_0^{\ast }(2400)\to PD\pi$ in the perturbative QCD approach
• Quasi-two-body decays $B\to D{K}^{\ast }(892)\to DK\pi$ in the perturbative QCD approach
• Electroweak effects in the extraction of the CKM angle $\gamma$ from $B\to D\pi$ decays
• Observation of the $B^0\to {\overline{D}}^{\ast 0}{K}^{+}{\pi }^{-}$ and $B_s^0\to {\overline{D}}^{\ast 0}{K}^{-}{\pi }^{+}$ decays