Testing the Noncommutative Standard Model at a Future Photon Collider
  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. 
Thorsten Ohl (Wuerzburg University), Jurgen Reuter (Karlsruhe   University)