Signals for Non - Commutative Interactions at Linear Colliders ∗
نویسندگان
چکیده
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 3and 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 → 2 QED processes in e+e− collisions. In particular, we examine pair annihilation, Moller and Bhabha scattering, as well as γγ → γγ scattering and show that non-commutative scales of order a TeV can be probed at high energy linear colliders. ∗Work supported by the Department of Energy, Contract DE-AC03-76SF00515
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