Extraction of $\gamma$ from three-body B decays
| Autor: | Bhattacharya, Bhubanjyoti, Imbeault, Maxime, London, David |
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| Rok vydání: | 2012 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | The conventional use of two-body B decays to extract $\gamma$, although theoretically clean, is currently statistics-limited. On the other hand, a bulk of data on three-body B decays is available from $B$ factories. Applying the flavor-SU(3)-symmetric approach proposed in Ref.\ \cite{ReyLeLorier:2011ww} to \babar data, we find the highly promising result $\gamma = (81^{+4}_{-5} ({\rm avg.}) \pm 5 ({\rm std.\ dev.}))^\circ$. This establishes the use of three-body B decays as a viable alternative for the extraction of weak phases. In this preliminary analysis we have neglected several sources of uncertainties such as the effect of flavor-SU(3) breaking due to meson masses, and error correlations between input experimental parameters. A better understanding of these will improve the viability of this method. Comment: Proceedings of CKM 2012, the 7th International Workshop on the CKM Unitarity Triangle, University of Cincinnati, USA, 28 September - 2 October 2012 |
| Databáze: | arXiv |
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