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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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Lenguaje: | eng |
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2011
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Acceso en línea: | http://cds.cern.ch/record/1363360 |
_version_ | 1780922724095361024 |
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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 |
record_format | invenio |
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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