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- W3000896539 abstract "Within the Standard Model of particle physics, decays involving flavour-changing neutral current transitions cannot occur via tree-level Feynman diagrams and can only occur at loop level or higher. This leads to a heavy suppression of decay modes of this type and makes them sensitive to contributions from particles beyond the Standard Model that can enter in competing Feynman diagrams. By performing measurements of the rate and angular distribution of these decay modes, powerful tests of the Standard Model can be carried out. In this thesis, a first search for the decay B0 s →K&0μ+μ- is presented using data samples collected by the LHCb collaboration during Run 1 and Run 2 of the LHC. An excess of this decay is found over the background-only hypothesis, providing first evidence for the decay mode with a significance of 3.4 standard deviations. A _first measurement of the branching fraction of this decay is made and a discussion of the future prospects for measurements of the decay mode is presented." @default.
- W3000896539 created "2020-01-30" @default.
- W3000896539 creator A5085404134 @default.
- W3000896539 date "2018-09-01" @default.
- W3000896539 modified "2023-09-23" @default.
- W3000896539 title "Studies of rare B→ Kπμμ decays using the LHCb experiment" @default.
- W3000896539 hasPublicationYear "2018" @default.
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