TY - JOUR
T1 - Signals for noncommutative QED in eγ and γγ collisions
AU - Godfrey, Stephen
AU - Doncheski, M. A.
PY - 2002
Y1 - 2002
N2 - We study the effects of noncommutative QED (NCQED) in fermion pair production, γ+ γ→f + f̄, and Compton scattering, e+ γ→e + γ. Non-commutative geometries appear naturally in the context of string or M theory and 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 γγ and eγ modes. Noncommutative 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 find that the Compton process is sensitive to ΛNC values roughly twice as large as those accessible to the pair production process.
AB - We study the effects of noncommutative QED (NCQED) in fermion pair production, γ+ γ→f + f̄, and Compton scattering, e+ γ→e + γ. Non-commutative geometries appear naturally in the context of string or M theory and 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 γγ and eγ modes. Noncommutative 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 find that the Compton process is sensitive to ΛNC values roughly twice as large as those accessible to the pair production process.
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U2 - 10.1103/PhysRevD.65.015005
DO - 10.1103/PhysRevD.65.015005
M3 - Article
AN - SCOPUS:0036142604
VL - 65
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
SN - 0556-2821
IS - 1
M1 - 015005
ER -