Authors: | Schellenberg, Margarete |
Title: | Measurement of πΎπ violation in the decay π½0βπΏβΒ±πΏβ with data from the LHCb experiment |
Language (ISO): | en |
Abstract: | This thesis presents the first LHCb measurement of πΆπ violation in π΅0 β π·βΒ±π·β decays. Due to the π β πππ transition, π΅0 β π·βΒ±π·β decays give access to higher-order Standard Model contributions. The decay-time-dependent measurement is performed on a dataset corresponding to an integrated luminosity of 9 fbβ1 recorded by the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV. The πΆπ observables are measured with an unbinned maximum likelihood fit as ππ·βπ· = β0.861 Β± 0.077 (stat) Β± 0.019 (syst), Ξππ·βπ· = 0.019 Β± 0.075 (stat) Β± 0.012 (syst), πΆπ·βπ· = β0.059 Β± 0.092 (stat) Β± 0.020 (syst), ΞπΆπ·βπ· = β0.031 Β± 0.092 (stat) Β± 0.016 (syst), π΄π·βπ· = 0.008 Β± 0.014 (stat) Β± 0.006 (syst). To date, the analysis is the most precise single measurement of πΆπ violation in this decay channel. All parameters are consistent with their current world average values. |
Subject Headings: | Flavourphysik CP Verletzung HEP CERN LHC LHCb-Experiment |
Subject Headings (RSWK): | LHCb <Teilchendetektor> Hochenergiephysik Elementarteilchenphysik CP-ParitΓ€t |
URI: | http://hdl.handle.net/2003/38418 http://dx.doi.org/10.17877/DE290R-20349 |
Issue Date: | 2019 |
Appears in Collections: | Experimentelle Flavourphysik |
Files in This Item:
File | Description | Size | Format | |
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Dissertation_Margarete_Schellenberg.pdf | DNB | 6.51 MB | Adobe PDF | View/Open |
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