2001/11/12 by Stephen Godfrey, M. A. Doncheski
Physics and Astronomy · #hep-ph
published as eConf C010630 (2001) P313 · 3 pages, 2 figures, RevTeX 4.0, contributed to APS/DPF/DPB Summer Study on the Future of Particle Physics (Snowmass 2001), Snowmass, Colorado, June 30 to July 21, 2001
arxiv created 2001/11/12 · arxiv updated 2009/11/30
We study the effects of non-commutative QED (NCQED) in fermion pair production, γ+ γ→ f + f and Compton scattering, e + γ→ e + γ. Non-commutative geometries appear naturally in the context of string/M-theory and gives rise to 3- and 4-point photon vertices and to momentum dependent phase factors in QED vertices which will have observable effects in high energy collisions. We consider e+ e- colliders with energies appropriate to the TeV Linear Collider proposals and the multi-TeV CLIC project operating in γγ and eγ modes. Non-commutative scales roughly equal to the center of mass energy of the e+e- collider can be probed, with the exact value depending on the model parameters and experimental factors. However, we found that the Compton process is sensitive to ΛNC values roughly twice as large as those accessible to the pair production process.