Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-11-15
Physics
High Energy Physics
High Energy Physics - Phenomenology
9 pages, 5 figures, Talk given at the SUSY 2002 Conference (DESY, Hamburg, Germany, June 2002). To appear in the SUSY 2002 Con
Scientific paper
We study the effects of non-commutative QED (NCQED) in fermion pair production, gamma + gamma to f + \bar{f} and Compton scattering, e + gamma to e + gamma. Non-commutative geometries give 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 gamma gamma and e gamma 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. The Compton process is sensitive to Lambda_{NC} values roughly twice as large as those accessible to the pair production process.
Doncheski Michael A.
Godfrey Stephen
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