Determining the unitarity triangle angle γ with a four-body amplitude analysis of B±→(K+K−π+π−)DK± decays

We explain how a four-body amplitude analysis of the D decay products in the mode B±→(K+K−π+π−)DK± is sensitive to the unitarity triangle angle γ. We present results from simulation studies which show that a precision on γ of 15° is achievable with 1000 events and assuming a value of 0.10 for the parameter rB.