Signals for Non-Commutative Interactions at Linear Colliders

Details Signals for Non-Commutative Interactions at Linear Colliders Signals for Non-Commutative Interactions at Linear Colliders

2000-10-31

arxiv.org/abs/hep-ph/0010354v2

Phys.Rev. D64 (2001) 075012

Physics

High Energy Physics

High Energy Physics - Phenomenology

51 pages, 23 figures, typos corrected, figure and references added

Scientific paper

10.1103/PhysRevD.64.075012

Recent theoretical results have demonstrated that non-commutative geometries naturally appear within the context of string/M-theory. One consequence of this possibility is that QED takes on a non-abelian nature due to the introduction of 3- and 4-point functions. In addition, each QED vertex acquires a momentum dependent phase factor. We parameterize the effects of non-commutative space-time co-ordinates and show that they lead to observable signatures in several $2\to 2$ QED processes in $e^+e^-$ collisions. In particular, we examine pair annihilation, Moller and Bhabha scattering, as well as $\gamma\gamma\to\gamma\gamma$ scattering and show that non-commutative scales of order a TeV can be probed at high energy linear colliders.

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