Yet another way to measure $\gamma$

Abstract

We show that the CKM phase $2\beta +\gamma$ can be extracted from measurement of the time dependent rates in the decays ${\bar{B}}^0\to D^{(\ast )\pm }{M}^{\mp }$ and $B^0\to D^{(\ast )\pm }{M}^{\mp }$, where $M=a_0$, $\pi (1300)$, $b_1$, $a_2$, ${\pi }_2$, ${\rho }_3$. These channels have a large asymmetry between decays of ${\bar{B}}^0$ and $B^0$ into the same final state. Even though the branching ratios are small, their sensitivity to $\gamma$ can be competitive with decays into $D^{(\ast )}$ and $(\pi ,\rho ,a_1)$.

5 pages, some clarifications and references added

References in corpus (2)

• QCD factorization for exclusive, non-leptonic B meson decays: General arguments and the case of heavy-light final states
• What if the Mass Difference $\Delta M_s$ is around 18 Inverse Picoseconds?

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