Determining the CP Violation Angle $\gamma$ in $B_s$ Decays without Hadronic Uncertainty

Abstract

We study the rare decays $B_s^0\to D^{\pm }{\pi }^{\mp }$ and ${\bar{B}}_s^0\to D^{\mp }{\pi }^{\pm }$, which can occur only via annihilation type $W$ exchange diagrams in the standard model. The time-dependent decay rates of the four channels can provide four CP parameters, which are experimentally measurable. We show that the CKM angle ${\varphi }_3=\gamma$ can be determined from these parameters without any theoretical model dependence. These channels can be measured in future LHCb experiments to provide a clean way for $\gamma$ measurement.

4 pages, including 2 figures, Revtex

References in corpus (11)

• Enhanced CP Violation with $B\to K{D}^0({\overline{D}}^0)$ Modes and Extraction of the CKM Angle gamma
• Determining $\gamma$ using $B^{\pm }\to D{K}^{\pm }$ with multibody D decays
• Improved Methods for Observing CP Violation in B+/- --> K+/- D0 and Measuring the CKM Phase gamma
• Improved Measurement of CP Asymmetries in B0 -> (ccbar)K0(*) Decays
• New Strategies to Obtain Insights into CP Violation Through $B_s\to D_s^{\pm }{K}^{\mp },D_s^{\ast \pm }{K}^{\mp },...$ and $B_d\to D^{\pm }{\pi }^{\mp },D^{\ast \pm }{\pi }^{\mp },...$ Decays
• Improved Measurement of CP-Violation Parameters sin(2phi1) and |lambda|, B Meson Lifetimes, and B0-B0bar Mixing Parameter Delta m_d
• B(d) --> phi K(S) CP asymmetries as an important probe of supersymmetry
• Neutral Higgs boson contributions to CP asymmetry of $B\to \Phi K_S$ in MSSM
• CP asymmetries in $B\to \varphi K_S$ and $B\to {\eta }^{\prime }{K}_S$ in MSSM
• CP violation in $B\to \Phi K_S$ in a model III 2HDM
• Determining gamma using B->D^**K

Cited by in corpus (4)

• Determining CP violation angle $\gamma$ with B decays into a scalar/tensor meson
• Study Pure Annihilation Decays $B_s^0({\bar{B}}_s^0)\to D^{\pm }{\pi }^{\mp }$ in PQCD Approach
• Time-dependent CP-violations of B(Bs) decays in the perturbative QCD approach
• Extracting the unitarity angle gamma in Bs to D0 h0, D0bar h0 Decays