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A measurement of the ratio of branching fractions: $\frac{\mathcal{B}(B^{\pm}\rightarrow D K^{\pm})}{\mathcal{B}(B^{\pm}\rightarrow D\pi^{\pm})}$ for $D\rightarrow K\pi$, $KK$, $K\pi\pi\pi$ and $K^0_S\pi\pi$

Using the 36.5~pb$^{-1}$ of data collected by the LHCb experiment in 2010, the ratio of two $B_u$ hadronic branching fractions: ${\cal B}(B^{\pm}\rightarrow D K^{\pm})\ /\ {\cal B}(B^{\pm}\rightarrow D \pi^{\pm})$ is measured for events in which the $D$ meson is reconstructed in one of four final st...

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Autor principal: The LHCb Collaboration
Lenguaje:eng
Publicado: 2011
Materias:
Acceso en línea:http://cds.cern.ch/record/1363360
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author The LHCb Collaboration
author_facet The LHCb Collaboration
author_sort The LHCb Collaboration
collection CERN
description Using the 36.5~pb$^{-1}$ of data collected by the LHCb experiment in 2010, the ratio of two $B_u$ hadronic branching fractions: ${\cal B}(B^{\pm}\rightarrow D K^{\pm})\ /\ {\cal B}(B^{\pm}\rightarrow D \pi^{\pm})$ is measured for events in which the $D$ meson is reconstructed in one of four final states. In the Cabibbo-favoured decays $D^0\rightarrow K^{-}\pi^{+}$ and $D^{0}\rightarrow K^{-}\pi^{+}\pi^{-}\pi^{+}$, this ratio is measured as $(6.30\pm0.38\pm0.40)\%$. It is determined to be $(9.31\pm1.89\pm0.53)\%$ in the $CP$ eigenstate mode $D\rightarrow K^{+} K^{-}$ and $(12\,^{+6}_{-5}\pm1)\%$ in the $D\rightarrow K^0_{\rm\scriptscriptstyle S}\pi^{+}\pi^{-}$ channel. From this work, two observables are measured: \begin{eqnarray*} R_{CP+} &=& 1.48 \pm 0.31 (stat.) \pm 0.12 (syst.)\\ A_{CP+} &=& 0.07 \pm 0.18 (stat.) \pm 0.07 (syst.) \end{eqnarray*}
id cern-1363360
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
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spelling cern-13633602019-09-30T06:29:59Zhttp://cds.cern.ch/record/1363360engThe LHCb CollaborationA measurement of the ratio of branching fractions: $\frac{\mathcal{B}(B^{\pm}\rightarrow D K^{\pm})}{\mathcal{B}(B^{\pm}\rightarrow D\pi^{\pm})}$ for $D\rightarrow K\pi$, $KK$, $K\pi\pi\pi$ and $K^0_S\pi\pi$Particle Physics - ExperimentUsing the 36.5~pb$^{-1}$ of data collected by the LHCb experiment in 2010, the ratio of two $B_u$ hadronic branching fractions: ${\cal B}(B^{\pm}\rightarrow D K^{\pm})\ /\ {\cal B}(B^{\pm}\rightarrow D \pi^{\pm})$ is measured for events in which the $D$ meson is reconstructed in one of four final states. In the Cabibbo-favoured decays $D^0\rightarrow K^{-}\pi^{+}$ and $D^{0}\rightarrow K^{-}\pi^{+}\pi^{-}\pi^{+}$, this ratio is measured as $(6.30\pm0.38\pm0.40)\%$. It is determined to be $(9.31\pm1.89\pm0.53)\%$ in the $CP$ eigenstate mode $D\rightarrow K^{+} K^{-}$ and $(12\,^{+6}_{-5}\pm1)\%$ in the $D\rightarrow K^0_{\rm\scriptscriptstyle S}\pi^{+}\pi^{-}$ channel. From this work, two observables are measured: \begin{eqnarray*} R_{CP+} &=& 1.48 \pm 0.31 (stat.) \pm 0.12 (syst.)\\ A_{CP+} &=& 0.07 \pm 0.18 (stat.) \pm 0.07 (syst.) \end{eqnarray*}LHCb-CONF-2011-031CERN-LHCb-CONF-2011-031oai:cds.cern.ch:13633602011-07-04
spellingShingle Particle Physics - Experiment
The LHCb Collaboration
A measurement of the ratio of branching fractions: $\frac{\mathcal{B}(B^{\pm}\rightarrow D K^{\pm})}{\mathcal{B}(B^{\pm}\rightarrow D\pi^{\pm})}$ for $D\rightarrow K\pi$, $KK$, $K\pi\pi\pi$ and $K^0_S\pi\pi$
title A measurement of the ratio of branching fractions: $\frac{\mathcal{B}(B^{\pm}\rightarrow D K^{\pm})}{\mathcal{B}(B^{\pm}\rightarrow D\pi^{\pm})}$ for $D\rightarrow K\pi$, $KK$, $K\pi\pi\pi$ and $K^0_S\pi\pi$
title_full A measurement of the ratio of branching fractions: $\frac{\mathcal{B}(B^{\pm}\rightarrow D K^{\pm})}{\mathcal{B}(B^{\pm}\rightarrow D\pi^{\pm})}$ for $D\rightarrow K\pi$, $KK$, $K\pi\pi\pi$ and $K^0_S\pi\pi$
title_fullStr A measurement of the ratio of branching fractions: $\frac{\mathcal{B}(B^{\pm}\rightarrow D K^{\pm})}{\mathcal{B}(B^{\pm}\rightarrow D\pi^{\pm})}$ for $D\rightarrow K\pi$, $KK$, $K\pi\pi\pi$ and $K^0_S\pi\pi$
title_full_unstemmed A measurement of the ratio of branching fractions: $\frac{\mathcal{B}(B^{\pm}\rightarrow D K^{\pm})}{\mathcal{B}(B^{\pm}\rightarrow D\pi^{\pm})}$ for $D\rightarrow K\pi$, $KK$, $K\pi\pi\pi$ and $K^0_S\pi\pi$
title_short A measurement of the ratio of branching fractions: $\frac{\mathcal{B}(B^{\pm}\rightarrow D K^{\pm})}{\mathcal{B}(B^{\pm}\rightarrow D\pi^{\pm})}$ for $D\rightarrow K\pi$, $KK$, $K\pi\pi\pi$ and $K^0_S\pi\pi$
title_sort measurement of the ratio of branching fractions: $\frac{\mathcal{b}(b^{\pm}\rightarrow d k^{\pm})}{\mathcal{b}(b^{\pm}\rightarrow d\pi^{\pm})}$ for $d\rightarrow k\pi$, $kk$, $k\pi\pi\pi$ and $k^0_s\pi\pi$
topic Particle Physics - Experiment
url http://cds.cern.ch/record/1363360
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AT thelhcbcollaboration measurementoftheratioofbranchingfractionsfracmathcalbbpmrightarrowdkpmmathcalbbpmrightarrowdpipmfordrightarrowkpikkkpipipiandk0spipi