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تسجيل مستخدم جديدRadiative $bto d$ Penguins
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تأليف
P. Bechtle
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This article gives an overview of the recent searches and measurements of $bto d$ penguin transitions with the BaBar experiment. The branching fraction of these decays in the Standard Model (SM) is expected to be a factor of 10 or more lower than the corresponding $bto s$ penguin transitions, but a deviation from the SM prediction would be an equally striking sign of new physics. The exclusive decay $Btopiellell$ is searched by BaBar with no excess over the background found. The BaBar measurement of $Bto(rho,omega)gamma$ provides the first evidence of $B^+torho^+gamma$, is in good agreement with the previous Belle results and provides a measurement of $|V_{td}/V_{ts}|$ independent of the one from $B_s$ mixing. No deviation from the SM is found.
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