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Tests of Low Scale Quantum Gravity in $e^-e^-$ and $γγ$ Collisions

Thomas G. Rizzo
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Abstract

Arkani-Hamed, Dimopoulos and Dvali have recently proposed that gravity may become strong at energies near 1 TeV due to the existence of large extra dimensions thus `removing' the hierarchy problem. In this talk we examine the exchange of towers of Kaluza-Klein gravitons and their influence on Moller scattering as well as the production of pairs of massive gauge bosons in $γγ$ collisions. These tower exchanges lead to a set of new dimension-8 operators that can significant alter the Standard Model expectations for these processes. In the case of $γγ$ collisions, the role of polarization for both the initial state photons and the final state gauge bosons in improving sensitivity to graviton exchange is emphasized.

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Thomas G. Rizzo. 1999-07-17. Tests of Low Scale Quantum Gravity in $e^-e^-$ and $γγ$ Collisions. https://arxiv.org/abs/hep-ph/9907401

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