New Perspectives 2016

Measurement of the Charge-Parity and Forward-Backward Asymmetries in the Decay $D^{\pm} \rightarrow \phi \pi^{\pm} \rightarrow K^{+}K^{-} \pi^{\pm}$ at CDF

13 Jun 2016, 11:00

15m

One West (Fermilab, Wilson Hall)

Session 2

Speaker

Mr Christopher Clarke (Wayne State University)

Description

Charge-parity violation (CPV) is important to explaining the matter-antimatter asymmetry in the universe. CPV is predicted in the Standard Model through the complex nature of the quark mixing matrix. CPV has been measured in $B$ meson decays through the interference of different decay paths to the same final state. In decays of $D$ mesons CPV is predicted to be very small and is not yet observed. We measure the charge-parity and forward-backward asymmetries in the Cabibbo-suppressed decay $D \to \phi \pi \to KK \pi$ using the full CDF dataset. It is expected that CP asymmetries will be more visible in Cabibbo-suppressed decays. We compare the $D$ measurements with the same measurement performed with $D_s \to \phi \pi \to KK \pi$ decays to cancel asymmetries from the detector. With approximately one million $D$ decays and 1.5 million $D_s$ decays we are sensitive to very small asymmetries. We expect to see significant improvement over previous measurements.

Presentation materials

Slides

ChrisClarkeNPTalk.pdf