Measurements of \CP\ violation in Lb/Xib >Lhh' decays


* UZH: Rafael Silva Coutinho

* WU: Timothy Gershon, Thomas Edward Latham

* UCAS: Wenbin Qian, Zhanwen Zhu

* CCNU: Yuehong Xie

* PKU: Ao Xu, Yanxi Zhang


We present a study of $\Lb/\Xibz \rightarrow \Lz h^{+} h^{\prime -}$ decay modes, where $h^{(\prime)}$ stands for a kaon or a pion, with the main objective being to search for direct \CP\ violation in these decays.
Measurements of, or limits on, the branching fractions of all $\Lb/\Xibz \rightarrow \Lz h^{+} h^{\prime -}$ decays are made, and \CP\ violation searches are only performed for channels with sufficient statistics.
Different subdivisions of the phase space for high yield modes are explored in order to have good sensitivity to possible \CP\ violation effects. The analysis is based on the $pp$ collision data sample corresponding to $9.1 \invfb$ of integrated luminosity collected by LHCb during the LHC Run~1 and Run~2 operation periods.

Draft of the Analysis Note

Paper draft



Codes and data files

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