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Universal Torsion Induced Interaction from Large Extra Dimensions

Tatsu Takeuchi·Lay Nam Chang·Oleg Lebedev·Will Loinaz
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Abstract

We consider a model with extra compact dimensions in which only gravity exists in the 4+n dimensional bulk. If the gravitational connection is not assumed to be symmetric, that is, unless torsion is artificially set to zero, then a universal contact interaction among the fermions on the 4-dimensional wall is induced. Using a global fit to Z-pole observables, we find the 3 sigma bound on the scale of quantum gravity to be M_S = 28 TeV for n=2. If Dirac or light sterile neutrinos are present, the data from SN1987A increase the bound to \sqrt{n} M_S >= 210 TeV.

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Tatsu Takeuchi, Lay Nam Chang, Oleg Lebedev, Will Loinaz. 2000-12-15. Universal Torsion Induced Interaction from Large Extra Dimensions. https://doi.org/10.1063/1.1394388

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