Measurement of the direct CP-violating charge asymmetry in Ds±→φπ±
Luminosity: 10.4 fb-1
The top figure in the animation is the invariant mass distribution of all
Ds± meson candidates, with a clear signal peak shown in red, together with a
number of background processes. For the lower figure, each point is the
difference between the number of positive (Ds+) and negative (Ds-)
candidates, for a set of ten simulations showing what a negative charge
asymmetry of 1% would look like for the signal.