Signals for Non-Commutative QED in $e γ$ and $γγ$ Collisions

Stephen Godfrey; M. A. Doncheski

paper

Signals for Non-Commutative QED in $e γ$ and $γ γ$ Collisions

arXiv:hep-ph/0111147

Abstract

We study the effects of non-commutative QED (NCQED) in fermion pair production, $γ + γ \to f + f ˉ$ and Compton scattering, $e + γ \to e + γ$ . 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 $γ γ$ and $e γ$ 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 $Λ_{N C}$ values roughly twice as large as those accessible to the pair production process.

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

Signals for Non-Commutative QED in $e γ$ and $γ γ$ Collisions

Abstract

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Signals for Non-Commutative QED in eγ and γγ Collisions

Abstract

References in corpus (20)

Cited by in corpus (36)

Signals for Non-Commutative QED in $e γ$ and $γ γ$ Collisions