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Development of the Selection Procedure for a Measurement of the Ratio of Branching Fractions $R_{pK}={\cal B}(\Lambda_b^0 \rightarrow pK\mu^+\mu^-)/{\cal B}(\Lambda_b^0 \rightarrow pKe^+e^-)$ as a Test of Lepton Universality
A selection procedure for the non-rare decays $\Lambda_b^0 \to pK^-J/\psi(\to \ell^+\ell^-)$ (where $\ell = \mu,e$) is presented, involving PID selection, removal of peaking backgrounds and multivariate analysis. Unforeseen delays in the acquisition of up to date stripping lines have slowed progress...
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| Lenguaje: | eng |
| Publicado: |
2016
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| Acceso en línea: | http://cds.cern.ch/record/2154424 |