Searches for $\Lambda_{b}^{0}$ and $\Xi_{b}^{0}$ decays to $K_{\mathrm S}^{0}p\pi^{-}$ and $K_{\mathrm S}^{0}pK^{-}$ final states with the first observation of the $\Lambda_{b}^{0} \to K_{S}^{0}p\pi^{-}$ decay

A search for previously unobserved decays of beauty baryons to the final states $K^0_{\mathrm{S}}p\pi^-$ and $K^0_{\mathrm{S}}pK^-$ is reported. The analysis is based on a data sample corresponding to an integrated luminosity of $1.0\,\mathrm{fb}^{-1}$ of $pp$ collisions. The $\Lambda^0_b \rightarro...

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Autor principal: Whitehead, Mark
Lenguaje:eng
Publicado: 2014
Materias:
Particle Physics - Experiment
Acceso en línea:http://cds.cern.ch/record/1752051
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author Whitehead, Mark
author_facet Whitehead, Mark
author_sort Whitehead, Mark
collection CERN
description A search for previously unobserved decays of beauty baryons to the final states $K^0_{\mathrm{S}}p\pi^-$ and $K^0_{\mathrm{S}}pK^-$ is reported. The analysis is based on a data sample corresponding to an integrated luminosity of $1.0\,\mathrm{fb}^{-1}$ of $pp$ collisions. The $\Lambda^0_b \rightarrow K^0_{\mathrm{S}}p\pi^-$ decay is observed for the first time with a significance of $8.6\,\sigma$, and a measurement is made of the $CP$ asymmetry, which is consistent with zero. No significant signals are seen for $\Lambda^0_b \rightarrow K^0_{\mathrm{S}}pK^-$ decays, $\Xi^0_b$ decays to both $K^0_{\mathrm{S}}p\pi^-$ and $K^0_{\mathrm{S}}pK^-$ final states, and the $\Lambda^0_b \rightarrow D^-_s (K^0_{\mathrm{S}}K^-)p$ decay, and upper limits on their branching fractions are reported.
id cern-1752051
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2014
record_format invenio
spelling cern-17520512023-03-14T16:33:59Zhttp://cds.cern.ch/record/1752051engWhitehead, MarkSearches for $\Lambda_{b}^{0}$ and $\Xi_{b}^{0}$ decays to $K_{\mathrm S}^{0}p\pi^{-}$ and $K_{\mathrm S}^{0}pK^{-}$ final states with the first observation of the $\Lambda_{b}^{0} \to K_{S}^{0}p\pi^{-}$ decayParticle Physics - ExperimentA search for previously unobserved decays of beauty baryons to the final states $K^0_{\mathrm{S}}p\pi^-$ and $K^0_{\mathrm{S}}pK^-$ is reported. The analysis is based on a data sample corresponding to an integrated luminosity of $1.0\,\mathrm{fb}^{-1}$ of $pp$ collisions. The $\Lambda^0_b \rightarrow K^0_{\mathrm{S}}p\pi^-$ decay is observed for the first time with a significance of $8.6\,\sigma$, and a measurement is made of the $CP$ asymmetry, which is consistent with zero. No significant signals are seen for $\Lambda^0_b \rightarrow K^0_{\mathrm{S}}pK^-$ decays, $\Xi^0_b$ decays to both $K^0_{\mathrm{S}}p\pi^-$ and $K^0_{\mathrm{S}}pK^-$ final states, and the $\Lambda^0_b \rightarrow D^-_s (K^0_{\mathrm{S}}K^-)p$ decay, and upper limits on their branching fractions are reported.A search for previously unobserved decays of beauty baryons to the final states $K^0_{\mathrm{S}}p\pi^-$ and $K^0_{\mathrm{S}}pK^-$ is reported. The analysis is based on a data sample corresponding to an integrated luminosity of $1.0\,\mathrm{fb}^{-1}$ of $pp$ collisions. The $\Lambda^0_b \rightarrow K^0_{\mathrm{S}}p\pi^-$ decay is observed for the first time with a significance of $8.6\,\sigma$, and a measurement is made of the $CP$ asymmetry, which is consistent with zero. No significant signals are seen for $\Lambda^0_b \rightarrow K^0_{\mathrm{S}}pK^-$ decays, $\Xi^0_b$ decays to both $K^0_{\mathrm{S}}p\pi^-$ and $K^0_{\mathrm{S}}pK^-$ final states, and the $\Lambda^0_b \rightarrow D^-_s (K^0_{\mathrm{S}}K^-)p$ decay, and upper limits on their branching fractions are reported.arXiv:1408.6053oai:cds.cern.ch:17520512014-08-26
spellingShingle Particle Physics - Experiment
Whitehead, Mark
Searches for $\Lambda_{b}^{0}$ and $\Xi_{b}^{0}$ decays to $K_{\mathrm S}^{0}p\pi^{-}$ and $K_{\mathrm S}^{0}pK^{-}$ final states with the first observation of the $\Lambda_{b}^{0} \to K_{S}^{0}p\pi^{-}$ decay
title Searches for $\Lambda_{b}^{0}$ and $\Xi_{b}^{0}$ decays to $K_{\mathrm S}^{0}p\pi^{-}$ and $K_{\mathrm S}^{0}pK^{-}$ final states with the first observation of the $\Lambda_{b}^{0} \to K_{S}^{0}p\pi^{-}$ decay
title_full Searches for $\Lambda_{b}^{0}$ and $\Xi_{b}^{0}$ decays to $K_{\mathrm S}^{0}p\pi^{-}$ and $K_{\mathrm S}^{0}pK^{-}$ final states with the first observation of the $\Lambda_{b}^{0} \to K_{S}^{0}p\pi^{-}$ decay
title_fullStr Searches for $\Lambda_{b}^{0}$ and $\Xi_{b}^{0}$ decays to $K_{\mathrm S}^{0}p\pi^{-}$ and $K_{\mathrm S}^{0}pK^{-}$ final states with the first observation of the $\Lambda_{b}^{0} \to K_{S}^{0}p\pi^{-}$ decay
title_full_unstemmed Searches for $\Lambda_{b}^{0}$ and $\Xi_{b}^{0}$ decays to $K_{\mathrm S}^{0}p\pi^{-}$ and $K_{\mathrm S}^{0}pK^{-}$ final states with the first observation of the $\Lambda_{b}^{0} \to K_{S}^{0}p\pi^{-}$ decay
title_short Searches for $\Lambda_{b}^{0}$ and $\Xi_{b}^{0}$ decays to $K_{\mathrm S}^{0}p\pi^{-}$ and $K_{\mathrm S}^{0}pK^{-}$ final states with the first observation of the $\Lambda_{b}^{0} \to K_{S}^{0}p\pi^{-}$ decay
title_sort searches for $\lambda_{b}^{0}$ and $\xi_{b}^{0}$ decays to $k_{\mathrm s}^{0}p\pi^{-}$ and $k_{\mathrm s}^{0}pk^{-}$ final states with the first observation of the $\lambda_{b}^{0} \to k_{s}^{0}p\pi^{-}$ decay
topic Particle Physics - Experiment
url http://cds.cern.ch/record/1752051
work_keys_str_mv AT whiteheadmark searchesforlambdab0andxib0decaystokmathrms0ppiandkmathrms0pkfinalstateswiththefirstobservationofthelambdab0toks0ppidecay

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