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primary topic: Amplitude Analysis of the Decay B0s→ψ(2S)π+π- with the LHCb Experiment

Amplitude Analysis of the Decay B0s→ψ(2S)π+π- with the LHCb Experiment
type: Article
abstract: This thesis presents the first analysis of the hadronic amplitudes in the decay B0s → ψ(2S)π+π− . The pions originate from the ss quark system of the weak B0s decay, which removes contributions from Isospin 1 resonances. This allows to test a novel dispersive approach for a process-independent description of the dipion isoscalar S-wave. Additionally, the tetraquark candidate Z(4430)− is known to contribute to ψ(2S)π− in B0→ ψ(2S)K+π− . An observation of this state in the ψ(2S)π± systems in B0s→ψ(2S) π+π− would give insights into its production mechanism and internal structure. The search for this state among the intermediate hadronic states of the B0s→ ψ(2S)π+π− decay is thus also part of the thesis. Using proton-proton collision data collected by the LHCb experiment in the years 2011, 2012, 2015-2018 at 7, 8, and 13 TeV corresponding to integrated luminosities of 1, 2, and 5 fb^-1 , the fit fractions of S-wave and the individual f_2 states are determined and the process-independence of the S-wave parametrisation is shown. Furthermore, a search for the exotic tetraquark candidate Z(4430)± in B0s → Z(4430)±π∓ with Z(4430)± →ψ(2S)π± is performed. No significant exotic contribution is measured and an upper limit on the fraction of decays proceeding via Z(4430)± is found to be F (Z) < 1.0 % at 95 % confidence level.
date: 2022
author list: authors
type: EPrint
type: DoctoralThesisEPrint
is part of: repository
has document: Amplitude Analysis of the Decay B0s→ψ(2S)π+π- with the LHCb Experiment (PDF)
has document: Amplitude Analysis of the Decay B0s→ψ(2S)π+π- with the LHCb Experiment (Other)
subject: 530 Physik

Amplitude Analysis of the Decay B0s→ψ(2S)π+π- with the LHCb Experiment (PDF)
type: Document
has file: Jascha_Grabowski_thesis.pdf
has part: Jascha_Grabowski_thesis.pdf

Jascha Grabowski
type: Person
given name: Jascha
family name: Grabowski

Amplitude Analysis of the Decay B0s→ψ(2S)π+π- with the LHCb Experiment (Other)
type: Document
is version of: Amplitude Analysis of the Decay B0s→ψ(2S)π+π- with the LHCb Experiment (PDF)
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Amplitude Analysis of the Decay B0s→ψ(2S)π+π- with the LHCb Experiment (Other)
type: Document
is version of: Amplitude Analysis of the Decay B0s→ψ(2S)π+π- with the LHCb Experiment (PDF)
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Amplitude Analysis of the Decay B0s→ψ(2S)π+π- with the LHCb Experiment (Other)
type: Document
is version of: Amplitude Analysis of the Decay B0s→ψ(2S)π+π- with the LHCb Experiment (PDF)
is volatile version of: Amplitude Analysis of the Decay B0s→ψ(2S)π+π- with the LHCb Experiment (PDF)
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Amplitude Analysis of the Decay B0s→ψ(2S)π+π- with the LHCb Experiment (Other)
type: Document
is version of: Amplitude Analysis of the Decay B0s→ψ(2S)π+π- with the LHCb Experiment (PDF)
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Amplitude Analysis of the Decay B0s→ψ(2S)π+π- with the LHCb Experiment (Other)
type: Document
is version of: Amplitude Analysis of the Decay B0s→ψ(2S)π+π- with the LHCb Experiment (PDF)
is volatile version of: Amplitude Analysis of the Decay B0s→ψ(2S)π+π- with the LHCb Experiment (PDF)
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HTML Summary of #31115 Amplitude Analysis of the Decay B0s→ψ(2S)π+π- with the LHCb Experiment
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primary topic: Amplitude Analysis of the Decay B0s→ψ(2S)π+π- with the LHCb Experiment

530 Physik
type: Concept
preferred label: 530 Physics @en