Search for Diphoton Events with Large Missing Transverse Energy in 6.3 fb{sup -1} of pp Collisions at {radical}(s)=1.96 TeV

We report a search for diphoton events with large missing transverse energy produced in pp collisions at {radical}(s)=1.96 TeV. The data were collected with the D0 detector at the Fermilab Tevatron Collider and correspond to 6.3 fb{sup -1} of integrated luminosity. The observed missing transverse energy distribution is well described by the standard model prediction, and 95% C.L. limits are derived on two realizations of theories beyond the standard model. In a gauge-mediated supersymmetry breaking scenario, the breaking scale {Lambda} is excluded for {Lambda}