Extensions of the Standard Model of elementary particle physics to
noncommutative geometries have been proposed as a low energy limit
of string
models. Independent of this motivation, one may consider such a model
as an effective field theory with higher-dimensional operators
containing an antisymmetric rank-two background field. We study the
signals of such a Noncommutative Standard Model (NCSM) and analyze
the discovery potential of a future photon collider, considering
angular distributions in fermion pair production.