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Analysis of $\Lambda^0_b\rightarrow\Lambda\mu^+\mu^-$ and $\Lambda^0_b\rightarrow J/\psi \Lambda$ decays with the LHCb detector

In this thesis the angular analysis of $\Lambda^0_b\rightarrow\Lambda\mu^+\mu^-$ and $\Lambda^0_b\rightarrow J/\psi\Lambda$ decays is presented, using data from $pp$ collisions recorded by the LHCb experiment between 2011 and 2016, corresponding to an integrated luminosity of approximately 5 fb$^{-1...

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Autor principal: Chatzikonstantinidis, Georgios
Lenguaje:eng
Publicado: 2020
Materias:
Acceso en línea:http://cds.cern.ch/record/2717628
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author Chatzikonstantinidis, Georgios
author_facet Chatzikonstantinidis, Georgios
author_sort Chatzikonstantinidis, Georgios
collection CERN
description In this thesis the angular analysis of $\Lambda^0_b\rightarrow\Lambda\mu^+\mu^-$ and $\Lambda^0_b\rightarrow J/\psi\Lambda$ decays is presented, using data from $pp$ collisions recorded by the LHCb experiment between 2011 and 2016, corresponding to an integrated luminosity of approximately 5 fb$^{-1}$. For the $\Lambda^0_b\rightarrow\Lambda\mu^+\mu^-$ decay, the angular observables are extracted at low hadronic-recoil using the method of moments. This is the first time that the complete set of the angular observables has been measured; the results are published in Ref. [1]. A measurement of the angular observables of the $\Lambda^0_b\rightarrow J/\psi\Lambda$ decays is also performed. The angular observables are extracted using a moment analysis; an interpretation of the results in terms of the production polarisation of $\Lambda^0_b$ and the decay amplitudes is also performed. This is the first time that the complete set of the angular observables of the $\Lambda^0_b\rightarrow J/\psi\Lambda$ has been measured; the results are preliminary and correspond to the current status of the analysis.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2020
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spelling cern-27176282020-07-21T12:48:59Zhttp://cds.cern.ch/record/2717628engChatzikonstantinidis, GeorgiosAnalysis of $\Lambda^0_b\rightarrow\Lambda\mu^+\mu^-$ and $\Lambda^0_b\rightarrow J/\psi \Lambda$ decays with the LHCb detectorParticle Physics - ExperimentIn this thesis the angular analysis of $\Lambda^0_b\rightarrow\Lambda\mu^+\mu^-$ and $\Lambda^0_b\rightarrow J/\psi\Lambda$ decays is presented, using data from $pp$ collisions recorded by the LHCb experiment between 2011 and 2016, corresponding to an integrated luminosity of approximately 5 fb$^{-1}$. For the $\Lambda^0_b\rightarrow\Lambda\mu^+\mu^-$ decay, the angular observables are extracted at low hadronic-recoil using the method of moments. This is the first time that the complete set of the angular observables has been measured; the results are published in Ref. [1]. A measurement of the angular observables of the $\Lambda^0_b\rightarrow J/\psi\Lambda$ decays is also performed. The angular observables are extracted using a moment analysis; an interpretation of the results in terms of the production polarisation of $\Lambda^0_b$ and the decay amplitudes is also performed. This is the first time that the complete set of the angular observables of the $\Lambda^0_b\rightarrow J/\psi\Lambda$ has been measured; the results are preliminary and correspond to the current status of the analysis.CERN-THESIS-2019-339oai:cds.cern.ch:27176282020-05-08T14:57:06Z
spellingShingle Particle Physics - Experiment
Chatzikonstantinidis, Georgios
Analysis of $\Lambda^0_b\rightarrow\Lambda\mu^+\mu^-$ and $\Lambda^0_b\rightarrow J/\psi \Lambda$ decays with the LHCb detector
title Analysis of $\Lambda^0_b\rightarrow\Lambda\mu^+\mu^-$ and $\Lambda^0_b\rightarrow J/\psi \Lambda$ decays with the LHCb detector
title_full Analysis of $\Lambda^0_b\rightarrow\Lambda\mu^+\mu^-$ and $\Lambda^0_b\rightarrow J/\psi \Lambda$ decays with the LHCb detector
title_fullStr Analysis of $\Lambda^0_b\rightarrow\Lambda\mu^+\mu^-$ and $\Lambda^0_b\rightarrow J/\psi \Lambda$ decays with the LHCb detector
title_full_unstemmed Analysis of $\Lambda^0_b\rightarrow\Lambda\mu^+\mu^-$ and $\Lambda^0_b\rightarrow J/\psi \Lambda$ decays with the LHCb detector
title_short Analysis of $\Lambda^0_b\rightarrow\Lambda\mu^+\mu^-$ and $\Lambda^0_b\rightarrow J/\psi \Lambda$ decays with the LHCb detector
title_sort analysis of $\lambda^0_b\rightarrow\lambda\mu^+\mu^-$ and $\lambda^0_b\rightarrow j/\psi \lambda$ decays with the lhcb detector
topic Particle Physics - Experiment
url http://cds.cern.ch/record/2717628
work_keys_str_mv AT chatzikonstantinidisgeorgios analysisoflambda0brightarrowlambdamumuandlambda0brightarrowjpsilambdadecayswiththelhcbdetector