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Extra Dimensions: A View from the Top

Smaragda Lola·Prakash Mathews·Sreerup Raychaudhuri·K. Sridhar
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Abstract

In models with compact extra dimensions, where the Standard Model fields are confined to a 3+1 dimensional hyperplane, the $t \bar t$ production cross-section at a hadron collider can receive significant contributions from multiple exchange of KK modes of the graviton. These are carefully computed in the well-known ADD and RS scenarios, taking the energy dependence of the sum over graviton propagators into account. Using data from Run-I of the Tevatron, 95% C.L. bounds on the parameter space of both models are derived. For Run-II of the Tevatron and LHC, discovery limits are estimated.

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Smaragda Lola, Prakash Mathews, Sreerup Raychaudhuri, K. Sridhar. 2000-10-18. Extra Dimensions: A View from the Top. https://doi.org/10.1103/physreve.83.036603

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