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<div class="csl-entry">Berger, M. (2015). <i>Determination of the Sigma-Pi scattering lengths in the weak Lambda c decay using Belle data</i> [Diploma Thesis, Technische Universität Wien]. reposiTUm. https://doi.org/10.34726/hss.2015.23960</div>
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dc.identifier.uri
https://doi.org/10.34726/hss.2015.23960
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/2125
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dc.description
Abweichender Titel laut Übersetzung der Verfasserin/des Verfassers
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dc.description
Zsfassung in dt. Sprache
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dc.description.abstract
This thesis deals with the analysis of the weak decays of Lambda_c -> Sigma pion pion using Belle data with the ultimate purpose of extracting scattering lengths of Sigma and pion. The Sigma-pion scattering length is one of the important missing experimental inputs to understand the Lambda(1405) state, an exotic resonance which can be considered as a quasi-bound state of proton and kaon. A determination of a scattering length of short lived particle is diifficult since a direct scattering experiment is not possible. In the case of the Sigma-pion system, due to the final state interaction, isospin violation and interference, threshold cusps will appear in the Sigma-pion spectra. The strength of the cusp effect reflects the Sigma-pion scattering lengths. The scope of this thesis is limited to the Monte Carlo studies that precede the measurement of real data. The reconstruction of Lambda_c in Sigma +pi +pi -, Sigma +pi 0pi 0 and Sigma 0pi +pi 0 decay modes as well as the determination of branching ratios of those decay modes relative to the reference channel pKpi is presented. Finally the MC Sigma-pi spectrum is compared with theoretical predictions.
en
dc.language
English
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dc.language.iso
en
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dc.rights.uri
http://rightsstatements.org/vocab/InC/1.0/
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dc.subject
Belle data analysis
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dc.subject
Sigma-pion scattering length
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dc.subject
Lambda_c branching ratio
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dc.title
Determination of the Sigma-Pi scattering lengths in the weak Lambda c decay using Belle data
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dc.title.alternative
Bestimmung der Sigma-Pi Streulängen im schwachen Lambda_c Zerfall aus Daten des BELLE Experiments