%0 Journal Article
%T Universal Torsion-Induced Interaction from Large Extra Dimensions
%A Lay Nam Chang
%A Oleg Lebedev
%A Will Loinaz
%A Tatsu Takeuchi
%J Physics
%D 2000
%I arXiv
%R 10.1103/PhysRevLett.85.3765
%X We consider the Kaluza-Klein (KK) scenario in which only gravity exists in the bulk. Without the assumption of symmetric connection, the presence of brane fermions induces torsion. The result is a universal axial contact interaction that dominates those induced by KK gravitons. This enhancement arises from a large spin density on the brane. Using a global fit to Z-pole observables, we find the 3 sigma bound on the scale of quantum gravity to be 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.
%U http://arxiv.org/abs/hep-ph/0005236v2