Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-09-08
Phys.Rev.D80:092002,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages, 10 figures. v2 as published
Scientific paper
10.1103/PhysRevD.80.092002
The potential for a precise measurement of the Unitarity Triangle angle $\gamma$ in future experiments from the decay $B^0 \to DK^{*0}$ is well-known. It has recently been suggested that the sensitivity can be significantly enhanced by analysing the $B^0 \to DK^+\pi^-$ Dalitz plot to extract amplitudes relative to those of the flavour-specific decay $B^0 \to D_2^{*-}K^+$. 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 $B^0 \to DK^{*0}$ 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 $\gamma$.
Gershon Tim
Williams Mike
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