Extraction of the CP-violating phase $\gamma$ using $B \to K \pi \pi$ and $B \to K K {\bar K}$ decays
| Autor: | Bhattacharya, Bhubanjyoti, Imbeault, Maxime, London, David |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Phys. Lett. B, 728, 206 (2014) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.physletb.2013.11.038 |
| Popis: | Using the B{\sc a}B{\sc ar}\ measurements of the Dalitz plots for $B^0 \to K^+\pi^0\pi^-$, $B^0 \to K^0\pi^+\pi^-$, $B^+ \to K^+\pi^+\pi^-$, $B^0 \to K^+ K^0 K^-$, and $B^0 \to K^0 K^0 {\bar K}^0$ decays, we demonstrate that it is possible to cleanly extract the weak phase $\gamma$. We find four possible solutions. Three of these -- $32^\circ$, $259^\circ$, and $315^\circ$ -- are in disagreement with the SM, while one -- $77^\circ$ -- is consistent with the SM. An advantage of this Dalitz-plot method is that one can obtain many independent measurements of $\gamma$, thereby reducing its statistical error. An accurate determination of the errors, however, requires detailed knowledge of the data. Comment: 9 pages, 2 figures, version accepted for publication in Physics Letters B |
| Databáze: | arXiv |
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