Walter Toki | Searcharxiv

arXiv2018

Statistical Significance of CP Violation in Long Baseline Neutrino Experiments

The p-value or statistical significance of a CP conservation null hypothesis test is determined from counting electron neutrino and antineutrino appearance oscillation events. The statistical estimates include cases with background events and different data sample sizes, graphical plots to interpret results and methods to combine p-values from different experiments. These estimates are useful for optimizing the search for CP violation with different amounts of neutrino and antineutrino beam running, comparing results from different experiments and for simple cross checks of more elaborate statistical estimates that use likelihood fitting of neutrino parameters.

hep-ex↗

arXiv2009

CP-violation parameters from decay rates of $B^\pm \to D K^\pm$, $D\to$ multibody final states

We describe a method for measuring CP-violation parameters from which the Cabibbo-Kobayashi-Maskawa angle $γ$ may be extracted. The method makes use of the total decay rates in $B^\pm \to DK^\pm$ decays, where the neutral $D$ meson decays to multibody final states. We analyze the error of the method using experimental CP-violation analysis variables that enable straightforward sensitivity comparison with other methods for extracting $γ$, and discuss the use of $B$-factory and charm-factory data to obtain the relevant charm decay information needed for this measurement. Measurement sensitivities are estimated for the currently available $B$-factory data sample, and $D$ decay modes for which use of this method can make a significant contribution toward reducing the total error on $γ$ are identified.

hep-ph↗