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Search for the rare decay $\Lambda_{b}\rightarrow p \pi^{-} \mu^{+}\mu^{-}$
This thesis reports the branching fraction measurement of the rare Cabibbo-suppressed decay $\Lambda_{b}\rightarrow p\pi^{-}\mu^{+}\mu^{-}$. The decay is observed for the first time with a $5.5\sigma$ deviation from the background-only hypothesis. This is the first observation of a $b\rightarrow d$...
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Lenguaje: | eng |
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2018
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Acceso en línea: | http://cds.cern.ch/record/2317245 |