Measuring $\beta$ in $B\to D^{\ast +}{D}^{\ast -}{K}_s$ Decays

Abstract

We consider the possibility of measuring both $\sin (2\beta )$ and $\cos (2\beta )$ in the KM unitarity triangle using the process $B^0\to D^{\ast +}{D}^{\ast -}{K}_s$. This decay mode has a higher branching fraction (O(1%)) than the mode $B^0\to D^{\ast +}{D}^{\ast -}$. We use the factorization assumption and heavy hadron chiral perturbation theory to estimate the branching fraction and polarization. The time dependent rate for $B^0(t)\to D^{\ast +}{D}^{\ast -}{K}_s$ can be used to measure $\sin (2\beta )$ and $\cos (2\beta )$ . Furthermore, examination of the $D^{\ast +}{K}_s$ mass spectrum may be the best way to experimentally find the broad $1^{+}$ p-wave $D_s$ meson.

Revtex, 28 pages, 7 figures, title changed, introduction expanded, added references, details of calculations moved to the appendix

References in corpus (2)

• CP Asymmetries in B_d \to D^{*+}D^{*-} and B_s \to D^{*+}_s D^{*-}_s Decays: P-wave Dilution, Penguin and Rescattering Effects
• New Time Distributions of D^0-\bar{D}^0 or B^0-\bar{B}^0 Mixing and CP Violation

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