2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/194477We explain how a four-body amplitude analysis of the $\rm D$ decay products in the mode $\rm B^\pm \to (K^+K^-π^+π^-)_D K^\pm$ is sensitive to the unitarity triangle angle $γ$. We present results from simulation studies which show that a precision on $γ$ of $15^\circ$ is achievable with 1000 events and assuming a value of 0.10 for the parameter $r_B$.8 pages, 3 figures. (This version has bug in equation 4 fixed, and minor modification to references.)High Energy Physics - Phenomenologytext